The value of the equation 7.4×10⁻⁸=6.7×10⁻⁹ is 6.73×10⁻⁸
What is Number system?A number system is defined as a system of writing to express numbers.
The given expression is 7, point, 4, dot, 10, start superscript, minus, 8, end superscript, minus, 6, point, 7, dot, 10, start superscript, minus, 9, end superscript, equals
7.4×10⁻⁸=6.7×10⁻⁹
Now let us take 6.7×10⁻⁹ to left hand side
7.4×10⁻⁸-6.7×10⁻⁹
Factor 10⁻⁸ from both terms
10⁻⁸(7.4-0.67)
6.73×10⁻⁸
Hence, 6.73×10⁻⁸ is the value of the equation 7.4×10⁻⁸=6.7×10⁻⁹
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The complete question will be as below
Find the simplest form of the equation 7.4×10⁻⁸=6.7×10⁻⁹?
Re-write the quadratic function below in Standard Form y = 4(x−7)(x+3)
plsssssssss help
The quadratic function y = 4(x−7)(x+3) is re-written in standard form as
4x²- 16x - 84 = 0
How to write the standard formThe general formula for a quadratic function is expressed as;
ax² + bx + c = 0
From the information given, we have;
y = 4(x−7)(x+3)
expand the bracket, we get;
(x−7)(x+3)
x²+ 3x - 7x - 21
add or subtract the like terms
x² - 4x - 21
Multiply by 4, we have;
4(x² - 4x - 21)
4x²- 16x - 84 = 0
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suppose we roll two six-sided dice. consider event a as getting an odd number on die 1, event b as getting an even sum for the two dice. are event a and b independent?
The events A and B are dependent. P(A and B) is not equal to 1/4, as it is less than that.
The probability of getting an odd number on the first die is 3/6 = 1/2.The probability of getting an even sum is 18/36 = 1/2.The probability of getting an odd number on the first die and an even sum is 9/36 = 1/4.If A and B were independent, we would expect P(A and B) = P(A)P(B) = 1/2 * 1/2 = 1/4. However, P(A and B) is not equal to 1/4, as it is less than that. Therefore, A and B are dependent events.
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Amplitude is ______.
the maximum displacement of a function on a graph
the minimum displacement of a function on a graph
Amplitude is the maximum displacement of a function on a graph.
What is amplitude?
Amplitude is the maximum displacement of a function on a graph. It refers to the maximum height or distance from the baseline of a wave or oscillation.
It is often used in physics and engineering to describe the strength or size of a signal, vibration, or wave. In simple terms, it can be thought of as the "peak-to-peak" distance of a waveform, or the height of the waveform above and below the baseline.
But the minimum displacement of a function on a graph would typically be referred to as the minimum value or the "valley" of the function.
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when two or more objective function coefficients are changed simultaneously, further analysis is necessary to determine whether the optimal solution will change.
The domain of the function f(x)= -long(5-x)+b is all real numbers except for x = 5.
What is function?Function is the process or state of instruction that text inputs performance is specific task and produce an output functional key components of programming language allowing the quarter to create complex commands with simple instruction for example a function can be used to add two numbers together or to generate a random number function can also be combined to create more complex sequence of instruction.
The range of this function is all real numbers as the long function will never return a negative value. The value of b determines the exact range of the function, as it shifts the graph up or down.
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The complete question is: Will changing two or more objective function coefficients simultaneously affect the optimal solution?
What’s 10 more than triple P
The value of mathematical expression is,
⇒ 10 + 3P
What is Mathematical expression?Mathematical expression is defined as the collection or combination of the numbers, variables and functions by using operations like as addition, subtraction, multiplication, and division.
Given that;
The expression is,
⇒ 10 more than triple P.
Now, We can simplify mathematical expression as;
Triple P = 3P
Hence, We get the expression as;
⇒ 10 more than triple P.
⇒ 10 + 3 × P
⇒ 10 + 3P
Therefore, We get;
The value of mathematical expression is,
⇒ 10 + 3P
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Explain how the tiles show that 2s + 3s² is not
equivalent
to 5s.
The size of s² blocks is larger than that of blocks of s and this shows that the expressions 2s+3s² is not equivalent to 5s.
What is an expression?An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division.
The given expressions are 2s+3s² and 5s.
Here, 2s+3s²≠5s
Substitute s=-1 in 2s+3s²≠5s, we get
2(-1)+3(-1)²≠5(-1)
1≠-5
Substitute s=2 in 2s+3s²≠5s, we get
2(2)+3(2)²≠5(2)
16≠10
Therefore, the size of s² blocks is larger than that of blocks of s and this shows that the expressions 2s+3s² is not equivalent to 5s.
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"Your question is incomplete, probably the complete question/missing part is:"
Is 2s+3s² equivalent to 5s? Use math tiles to model 2s+3s² and 5s.
s+s s²+s²+s² s+s+s+s+s
2s 3s² 5s
The expression 2s+3s² is not equivalent to 5s. Explain how that tiles show that 2s+3s² is not equivalent to 5s.
PLEASE ANSWER ASAP!!!!
Sorry about the random numbers throughout the text. I had to censor some words due to brainly being scared of Macbeth.
Read the excerpt from act 1, scene 7 of The Tragedy of Macbeth.
Macbeth. He’s here in double trust:
First, as I am his k1nsman and his subject,
Strong both against the deed; then, as his host,
Who should against his murd3r3r shut the door,
Not bear the kn1fe myself. Besides, this Duncan
Hath borne his faculties so meek, hath been
So clear in his great office, that his virtues
Will plead like angels trumpet-t0ngu’d against
The deep d4mnation of his taking-off;
And p1ty, like a nak3d new-born babe,
Striding the blast, or heaven’s cherubin, hors’d
Upon the sightless couriers of the air,
Shall blow the horr1d deed in every eye,
That tears shall drown the wind. I have no spur
To pr1ck the sides of my intent, but only
Vaulting ambition, which o’er-leaps itself
And falls on the other.
Which statement best describes why Macbeth’s use of both logic and emotion is appropriate in this scene?
A. The use of logic causes Macbeth to envision himself as king, and the use of emotion leads him to think about those who would mourn Duncan’s death.
B. The use of logic causes Macbeth to reconsider his thoughts of killing the king, and the use of emotion leads him to question his motives.
C. The use of logic causes Macbeth to reevaluate Duncan’s capable leadership, and the use of emotion leads him to realize that his plan is justified.
D. The use of logic causes Macbeth to ponder the consequences of murder, and the use of emotion leads him to recommit to the promise he made to his wife.
The correct answer is: The use of logic causes Macbeth to ponder the consequences of murder, and the use of emotion leads him to recommit to the promise he made to his wife.
What is probability?Probability is a branch of mathematics that deals with the likelihood or chance of an event happening. It is a numerical measure of the uncertainty of an event, represented as a fraction, decimal, or percentage between 0 and 1. An event with a probability of 0 means that it is impossible for the event to occur, while an event with a probability of 1 means that it is certain to occur. In probability theory, events can be independent or dependent. Independent events have no effect on each other, so their probabilities are multiplied to find the probability of both events happening. Dependent events are those in which the outcome of one event affects the outcome of another event, so their probabilities must be multiplied differently to find the probability of both events happening.
Here,
The use of both logic and emotion in this scene highlights Macbeth's internal conflict and the struggle between his moral and immoral desires.
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Which expression is equivalent to √64 a6
Answer:
√64 a⁶
or, √2⁶a⁶
or, √(2a)⁶
or, (2a)³
=8a³
Determine which of the following transformations are linear transformations
A. The transformation T1
defined by T1(x1,x2,x3)=(x1,0,x3)
B. The transformation T2
defined by T2(x1,x2)=(2x1−3x2,x1+4,5x2)
.
C. The transformation T3
defined by T3(x1,x2,x3)=(x1,x2,−x3)
D. The transformation T4
defined by T4(x1,x2,x3)=(1,x2,x3)
E. The transformation T5
defined by T5(x1,x2)=(4x1−2x2,3|x2|)
.
The transformation T1 defined by T1(x1,x2,x3)=(x1,0,x3) is linear transformation among the five given questions.
A linear transformation satisfies two properties: additivity and homogeneity. That is, for any vectors u and v, and any scalars a and b:
T(u + v) = T(u) + T(v)
T(au) = aT(u)
Using these properties, we can determine which of the given transformations are linear transformations:
A. The transformation T1 defined by T1(x1,x2,x3)=(x1,0,x3)
T1(u+v) = (u1+v1, 0, u3+v3) = (u1, 0, u3) + (v1, 0, v3) = T1(u) + T1(v)
T1(au) = (au1, 0, au3) = a(u1, 0, u3) = a*T1(u)
Therefore, T1 is a linear transformation.
The transformation T2 defined by T2(x1,x2)=(2x1−3x2,x1+4,5x2)
T2(u+v) = (2(u1+v1)−3(u2+v2), u1+v1+4, 5(u2+v2))
= (2u1−3u2, u1+4, 5u2) + (2v1−3v2, v1+4, 5v2) = T2(u) + T2(v)
However, T2 does not satisfy homogeneity property. Consider a = -1 and u = (1, 1):
T2(-u) = (-2, 5, -5)
-1*T2(u) = (-2, -5, -5)
Therefore, T2 is not a linear transformation.
The transformation T3 defined by T3(x1,x2,x3)=(x1,x2,−x3)
T3(u+v) = (u1+v1, u2+v2, -(u3+v3)) = (u1, u2, -u3) + (v1, v2, -v3) = T3(u) + T3(v)
T3(au) = (au1, au2, -au3) = a*(u1, u2, -u3) = a*T3(u)
Therefore, T3 is a linear transformation.
The transformation T4 defined by T4(x1,x2,x3)=(1,x2,x3)
T4(u+v) = (1, u2+v2, u3+v3) ≠ (1, u2, u3) + (1, v2, v3) = T4(u) + T4(v)
T4(au) = (1, au2, au3) ≠ a(1, u2, u3) = a*T4(u)
Therefore, T4 is not a linear transformation.
The transformation T5 defined by T5(x1,x2)=(4x1−2x2,3|x2|)
T5(u+v) = (4(u1+v1)−2(u2+v2), 3|u2+v2|)
= (4u1−2u2, 3|u2|) + (4v1−2v2, 3|v2|) ≠ T5(u) + T5(v)
T5(au) = (4au1−2au2, 3|au2|) ≠ a*T5(u)
Therefore, T5 is not a linear transformation.
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Kendra and Allen Tovsky have a combined income of $142,573. They have 1099 forms which report $650 in dividends. They also have $8,500 in income from rental property. They are able to reduce their income by $12,500. What is their adjusted gross income?
Kendra and Allen Tovsky's adjusted gross income is $139,223.
What is Adjusted Gross Income (AGI)?Adjusted Gross Income (AGI) is defined as an individual's gross income minus various adjustments made to that income, such as trade and business deductions.
To calculate Kendra and Allen Tovsky's adjusted gross income (AGI), we need to start with their total income and subtract any deductions or adjustments they are eligible for.
Their total income is:
Combined income: $142,573
Dividends: $650
Rental income: $8,500
Total income before deductions: $151,723
Next, we need to subtract their eligible deductions. In this case, they are able to reduce their income by $12,500, which could include things like contributions to a retirement account or health savings account, self-employed expenses, or student loan interest payments. Let's assume that the full $12,500 deduction applies to their situation.
Adjusted gross income calculation:
Total income before deductions: $151,723
Minus eligible deductions: $12,500
Adjusted gross income: $139,223
Therefore, Kendra and Allen Tovsky's adjusted gross income is $139,223.
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A store manager instructs some new trainees that a measuring tape priced at $3 winds up costing a customer $3.24 once the sales tax is included. What is the sales tax percentage?
Answer: To find the sales tax percentage, we can start by subtracting the cost of the item itself from the total cost with tax included.
In this case, the cost of the item is $3, and the total cost with tax included is $3.24, so:
$3.24 - $3 = $0.24
Next, we can divide the amount of sales tax by the cost of the item, and multiply by 100 to find the percentage:
$0.24 ÷ $3 × 100 = 8%
So the sales tax percentage is 8%.
Step-by-step explanation:
Answer:
Step-by-step explanation:
$3 item
h = 100 * 3.24 - 3/ 3 = 24/3 = 8 1 = 8%
Sales tax percentage is = 8%
A system of two linear equations in two variables is shown on the coordinate grid.
10
8
6
*
10-8-6-4-2 2 4 6 8 10
-2
-6
A
69
Which system of equations does the graph represent?
The graph of the two linear functions is f(x) = 2x and f(x) = x.
What are the three types of solutions for a system of linear equations?If a system of equations only contains two linear equations with two variables, the system's equation can be graphed, the graph will have two straight lines, and the intersection point(s) of those lines will be the system's solution.
There are only three matching forms of solution for a given system of equations because there are only three different ways that two straight lines in the plane can graph.
Let, The first table be,
x = 2 4 6 8.
y = 4 8 12 16.
We can observe that when x = 2, y = 4, and when x = 4 y = 8.
Therefore, The equation is y = 2x.
The second table is,
x = 1 2 3 4.
y = 1 2 3 4.
Here, y is equal to x, Therefore, The equation is y = x.
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please help meee.
step by step please
here is the picture please help me.
The domain of function fog (x) is [-2, 3].
From the case, it was given that:
f(x) = √(6 - x)
g(x) = x² - x
Domain of fog (x) ?
First, we need to find the form of function fog (x):
fog (x) = √(6 - (x² - x)
fog (x) = √(6 - x² + x)
fog (x) ≤ 0 --> to be rational
√(6 - x² + x) ≤ 0
To find the domain of function fog(x), we need to find the value of x where fog (x) equals to zero (0):
√(6 - x² + x) = 0
6 - x² + x = 0
(-x + 3) (x + 2) = 0
x = 3 or x = -2
Next, we need to chose random number above, between, and below 3 and -2 to find the domain of fog (x):
-2 < x < 3; x = 0
fog (0) = √(6 - (0)² + (0))
fog (0) = √6 --> rational
x < -2; x = -3
fog (-3) = √(6 - (-3)² + (-3))
fog (-3) = √(6 - 9 - 3)
fog (-3) = √(-6) --> irrational
x > 3; x = 4
fog (4) = √(6 - (4)² + (4)
fog (4) = √(6 - 16 + 4)
fog (4) = √(-6) --> irrational
Hence, the value of x should be -2 ≤ x ≤ 3 to make fog (x) function rational.
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Suppose you surveyed 30 people and asked them whether they are white (W) white (N), and how many traumas (serious accidents, rapes, or crimes) they have enced in the past year. You also asked them to tell you whether they perceive theme as being in the upper, middle, working, or lower class. Your survey resulted in the data presented in the table below: a. Identify the level of measurement for each variable. b. Construct raw frequency tables for race. c. What proportion of the 30 individuals is nonwhite? What percentage is white?
a. The level of measurement for each variable are Race: Nominal, trauma: Ratio, Social Class: Ordinal.
b. Raw frequency tables for race:
Race Frequency
W 21
N 9
c. The proportion of the 30 individuals who are nonwhite is: 9/30 = 0.3
So, 30% of the individuals are nonwhite.
The percentage of individuals who are white is: 21/30 x 100% = 70%
So, 70% of the individuals are white.
Race is a nominal variable because it is a categorical variable that does not have any inherent order or ranking. The two categories are "W" for white and "N" for nonwhite.
Trauma is a ratio variable because it is a quantitative variable that has a meaningful zero point. This means that a value of zero indicates the absence of the thing being measured, and values greater than zero indicate a greater quantity of the thing being measured.
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Figure order is a rectangle what are the coordinates of point Q
The coordinates of point Q in the rectangle named QRST is (5, 5).
What are Coordinates?A pair of numbers called coordinates are used to locate a point or a form in a two-dimensional plane. The x-coordinate and the y-coordinate are two numbers that define a point's location on a 2D plane.
Given:
We have the Graph having coordinate T(5, 2).
and, length of QT = 3 unit
As, the vertical distance shows the y coordinate then the y coordinate of Q is 3.
and, the x coordinate is same as T.
Then, the Coordinate of Q is (5, 2+3) or (5, 5).
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Using the graphing tool, write the exponential function that best modes the number of trees infected
The exponential function that best modes the number of trees infected [tex]y = a * e^{bx}[/tex]
what is exponential function ?
An exponential function is a mathematical function of the form [tex]f(x) = a^x[/tex] where "a" is a constant called the base, and "x" is the exponent. The base "a" is usually a positive number greater than 1, although it can be any positive number, including fractions and decimals.
Given by the question:
Assuming that the number of infected trees follows an exponential growth pattern, we can use the following equation:
[tex]y = a * e^{bx}[/tex]
where y is the number of infected trees at a given time, x is the time elapsed, a is the initial number of infected trees, and b is the rate of growth.
To find the values of a and b that best fit the data, we can use regression analysis techniques. We would need to input the data into a statistical software program, such as R or Excel, and run a regression analysis to estimate the values of a and b.
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Mr. Adams has a circular flower bed with a
diameter of 2 feet. He wishes to increase the size of this bed so that it will have nine times as much planting area. What must be the diameter of the new bed?
(F) 6 feet
(G) 8 feet
(H) 12 feet
(J) 16 feet
(K) none of these
Please Help!!!
Answer: (F) 6 feet
Step-by-step explanation:
The area of a circle is proportional to the square of its radius. So if we increase the diameter of the flower bed by a factor of x, its area will increase by a factor of x^2. We want to find the diameter of the new bed that will have nine times the planting area of the old bed.
Let d be the diameter of the new bed. Then its radius is r = d/2, and its area is A = πr^2. We want:
9A = π(D/2)^2
where D is the diameter of the old bed. Substituting r = D/2, we get:
9A = π(D/2)^2
= πr^2
So we can solve for d by equating the right-hand sides and taking the square root:
9πr^2 = πd^2
d^2 = 9r^2
d = 3r
Therefore, the diameter of the new bed must be three times the diameter of the old bed. The diameter of the old bed is 2 feet, so the diameter of the new bed is 3 times that, or 6 feet.
What is the value of the function at x = -2?
Answer:
f(-2) = 2
Step-by-step explanation:
Value of the function at x = -2.
Go to x=-2 and then read what the y value is at x=-2
y = 2 at x = -2.
f(-2) = 2
Use the Fundamental Counting Principle to find the total number of possible outcomes.
The number of possible outcomes is given as follows:
18 outcomes.
What is the Fundamental Counting Theorem?The Fundamental Counting Theorem states that if there are n independent trials, each with [tex]n_1, n_2, \cdots, n_n[/tex] possible results, the total number of outcomes is calculated by the multiplication of the number of outcomes for each trial as presented as follows:
[tex]N = n_1 \times n_2 \times \cdots \times n_n[/tex]
For this problem, we have that:
There are 3 options for the location.There are 6 options for the activity.Hence the number of outcomes is given as follows:
3 x 6 = 18 outcomes.
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Evaluate 2x + 3y if x =2 and y = 8
Does Stephanie have enough to cover the property damages
Since Stephanie carries a 100/300/100 liability policy, Stephanie's insurance can cover up to $100,000, therefore Stephanie have enough coverage to cover the property damages.
What is Property Damage?Property damage is any harm or destruction to real or tangible personal property that is brought on by carelessness, intentional obliteration, or a natural disaster.
A more serious form of property damage known as destruction of property involves physical harm to items that are either beyond repair or would be very expensive to replace.
We see that Stephanie has an insurance policy and because she has a 100/300/100 liability policy, she can cover for the damage because it is less than $100,000
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What's the possible values of z when t = 81
( be it real or complex number )
[tex] {z}^{2} = \sqrt{t} [/tex]
So annoying ~
Answer:
[tex]\boxed{\mathrm{z=\pm 3}}[/tex]Step-by-step explanation:
[tex]\mathrm{z^2=\sqrt{t}, \; when, \; t=81}[/tex]
Substitute t with 81:-
[tex]\mathrm{z^2=\sqrt{81}}[/tex]
Since 9*9 =81, square of 81 is 9:-
[tex]\mathrm{z^2=9}[/tex]
Take the square root of both sides.
[tex]\mathrm{z=\pm \sqrt{9} }[/tex]
and since 3*3 = 9 the square root of 9 will be 3.:-
[tex]\mathrm{z=\pm 3}[/tex]
_____________________
Hope this helps!
A rectangle has a perimeter of 74 centimeters.The length of the rectangle is 5 centimeters less than twice the width.What is the area of the rectangle,in square centimeters?
The area of the rectangle is 322 square centimeters.
Given data :- The perimeter of a rectangle P =74 meter. If the length is 5 meter less than twice it's width.
The dimensions of the rectangle =?
Let assume that the length of the rectangle L = (2x -5)m
And the width of the rectangle W = x meter
Now Perimeter P = 2(L+W)
74 = [2{x+(2x-5)}]
3x-5=37
3x= 42 , x = (42/3)= 14 meter
So the required width of the Rectangle W = 14 meter
Similarly , L = (2*14 - 5) = 23
Now , area of the rectangle = 14*23
Therefore, area of the rectangle = 322
Hence , the area of the rectangle is 322 square centimeters.
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Levels of Measurement!
What type of measure scale is being used? Nominal, Ordinal, interval or Ratio.
1. A satisfaction survey of a social website by number:
1 = very satisfied, 2 = somewhat satisfied, 3 = not satisfied.
2. The colors of crayons in a 24-crayon box.
3. Baking temperatures for various main dishes: 350, 400, 325, 250, 300
4. The distance in miles to the closest grocery store.
5. High school men soccer players classified by their athletic ability:
Superior, Average, Above average.
1) A satisfaction survey of a social website by number is Ordinal.
2) The colors of crayons in a 24-crayon box are nominal.
3) The baking temperatures for various main dishes are interval.
4) The distance in miles to the closest grocery store is Ratio
5) High school men soccer players classified by their athletic ability are Ordinal.
The satisfaction survey scale is ordinal since the numbers are used to indicate the order of satisfaction (i.e., very satisfied is higher than somewhat satisfied, which is higher than not satisfied), but the difference between each level is not known.
The colors of crayons are nominal since they are categorical and do not have an inherent order or numeric value.
The baking temperatures are interval, as the differences between the values are meaningful, but there is no true zero point (i.e., 0 degrees does not indicate the absence of temperature).
The distance to the closest grocery store is ratio, as it has a true zero point (i.e., 0 miles means no distance), and the differences between distances are meaningful and measurable.
The classification of high school soccer players by athletic ability is ordinal since the categories are ordered, but the differences between them are not known.
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Find the surface area of the composite figure.
5 cm
4 cm
4 cm
Hint: Area of a
Triangle = b.h
SA = [?] cm²
4 cm
If you'd like
The surface area of the figure is 56 square units
What is the surface area of the figure?The complete question is added as an attachment
From the question, we have the following parameters that can be used in our computation:
Net of right rectangular pyramid
The surface area of the figure is calculated as
Area = sum of individual areas
Using the above as a guide, we have the following:
Area = 4 * 4 + 4 * 1/2 * 4 * 5
Evaluate the expression
Area = 56
Hence, the area is 56 square units
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Which function is most likely graphed on the coordinate plane below?
f(x) = 3x – 11 f(x) = –4x + 12 f(x) = 4x + 13 f(x) = –5x – 19
The graph given is of the function f(x) = –5x – 19
What is a function?A function is a relation from a set of inputs to a set of possible outputs where each input is related to exactly one output.
Given is a graph, we need to determine the graph belongs to which function,
From the figure it is noticed that the f(x) is a straight line, so it must be in the form of,
f(x) = ax+b
Where, a coefficient of x and b are constants.
From the graph it is noticed that as the value of x increases the value f(x) decreases. It means the function have negative slope and the coefficient of x must be negative.
The function intersect the y-axis at below the origin. It means the value of b must be negative.
The sign of both constant and coefficient are negative. According to this statement the correct option is D.
In function f(x) = –5x – 19 both constant and coefficient are negative.
Put x=0, we get f(x)=-19, so the y-intercept is (0,-19).
Put f(x)=0, we get x = -19/5, so the x-intercept is (-19/5, 0).
Since both x and y intercepts are negative,
Therefore, option D is correct.
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Use the given points to write a system of two linear equations with the two unknowns being the slope and y-intercept of the line. Solve the system to identify those parameters and write the equation for the line passing through the two points in slope-intercept form.
(2, 5) and (6, 2)
(-1, 3) and (0, -2)
(-2, -4) and (2, 1)
The equation of the line passing through (-2, -4) and (2, 1) in slope-intercept form is y = (5/4)x - 9/4.
Describe Equation?An equation is a mathematical statement that shows that two expressions are equal to each other. It consists of two sides, the left-hand side (LHS) and the right-hand side (RHS), separated by an equal sign (=). The LHS and RHS can contain numbers, variables, and mathematical operations such as addition, subtraction, multiplication, division, exponents, and roots.
(2, 5) and (6, 2):
The two points are connected by a line that has the following slope:
m = (y2 - y1) / (x2 - x1)
= (2 - 5) / (6 - 2)
= -3/4
We may write the following using the equation of a line in the point-slope form:
y - y1 = m(x - x1)
Choosing point (2, 5) as (x1, y1), we get:
y - 5 = (-3/4)(x - 2)
Simplifying this equation, we get:
y = (-3/4)x + 11/2
So the equation of the line passing through (2, 5) and (6, 2) in slope-intercept form is y = (-3/4)x + 11/2.
(-1, 3) and (0, -2):
The two points are connected by a line that has the following slope:
m = (y2 - y1) / (x2 - x1)
= (-2 - 3) / (0 - (-1))= -5
We may write the following using the equation of a line in the point-slope form:
y - y1 = m(x - x1)
Choosing point (-1, 3) as (x1, y1), we get:
y - 3 = (-5)(x + 1)
Simplifying this equation, we get:
y = -5x - 2
So the equation of the line passing through (-1, 3) and (0, -2) in slope-intercept form is y = -5x - 2.
(-2, -4) and (2, 1):
The two points are connected by a line that has the following slope:
m = (y2 - y1) / (x2 - x1)
= (1 - (-4)) / (2 - (-2))
= 5/4
We may write the following using the equation of a line in the point-form:slope
y - y1 = m(x - x1)
Choosing point (-2, -4) as (x1, y1), we get:
y + 4 = (5/4)(x + 2)
Simplifying this equation, we get:
y = (5/4)x - 9/4
So the equation of the line passing through (-2, -4) and (2, 1) in slope-intercept form is y = (5/4)x - 9/4.
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In 2020, of a random sample of votes cast, 12 out of 25 were cast for Candidate A and 23 out of 50 were cast for Candidate B.
What fraction of ballots were cast for someone other than
Candidate A or Candidate B?
The fraction of ballots that were cast for someone other than Candidate A or Candidate B is given by the equation q = 3/50
What is a Fraction?An element of a whole is a fraction. The number is represented mathematically as a quotient, where the numerator and denominator are split. Both are integers in a simple fraction. A fraction appears in the numerator or denominator of a complex fraction. The numerator of a proper fraction is less than the denominator.
Given data ,
Let the fraction of ballots that were cast for someone other than Candidate A or Candidate B be represented as q
Now , the equation will be
The fraction of ballots cast for Candidate A = 12/25 = 24/50
The fraction of ballots cast for Candidate B = 23/50
So , the total fraction of ballots casts for Candidate A and Candidate B = fraction of ballots cast for Candidate A + fraction of ballots cast for Candidate B
Substituting the values in the equation , we get
The total fraction of ballots casts for Candidate A and Candidate B is given by p = ( 24 + 23 ) / 50
p = 47/50
Now , fraction of ballots that were cast for someone other than Candidate A or Candidate B = 1 - p
The value of q = 1 - p
q = 1 - ( 47/50 )
q = 3/50
Hence , the fraction is 3/50
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A random sample of 31 charge sales showed a sample standard deviation o $50. A 90% confidence interval estimate of the population standard deviation is:
A 1715.10 - 4055.68
B 1596.45-4466.73
C 39.96-66.83
D 41.39-63.68
A 90% confidence interval estimate of the population standard deviation is 1596.45-4466.73
We can use the chi-square distribution to construct a confidence interval for the population standard deviation, where the lower and upper limits are given by:
[tex]\sqrt{(n-1)*s^2/chi2(alpha/2,n-1)) }[/tex] and [tex]\sqrt{(n-1)*s^2/chi2(1-alpha/2,n-1)}[/tex]
Standard Deviation is a measure that shows how much variation (such as spread, dispersion, spread,) from the mean exists.
Where n is the sample size, s is the sample standard deviation, alpha is the significance level, and chi2 is the chi-square distribution function.
Substituting the given values, we get:
Lower limit
= [tex]\sqrt{(31-1)*50^2/chi2(0.05/2,31-1)}[/tex]
= 1596.45
Upper limit
= [tex]\sqrt{(31-1)*50^2/chi2(1-0.05/2,31-1)}[/tex]
= 4466.73
Therefore, a 90% confidence interval estimate of the population standard deviation is 1596.45-4466.73.
Hence, the correct answer is B) 1596.45-4466.73
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for
6. Tami multiplies two fractions. The first fraction is greater than -1 but less than 0. The
notei
second fraction is greater than 0 but less than 1.
Which statement describes the product of the two fractions Tami multiplied?
The product of the two fractions Tami multiplied will be a negative number between 0 and -1.
How to find the product of the multiplicationSince the first fraction is negative greater than -1 but less than 0
and the second fraction is positive, greater than 0 but less than 1, their product will be negative.
This is because when a negative number multiplies a positive number the product is a negative number
Moreover, since both numbers are in fraction and less than whole their multiplication will also be a reduction tending towards zero
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