Answer:
use the formula: mEq = (mg x valence) / atomic or molecular weight
Step-by-step explanation:
In a normal distribution, x = -5 and z=-3.14. This tells you that x = -5 is__standard deviations to the (right or left) of the mean.
-3.14, left
5, left
3.14, left
3.14 right
-3.14, right
In a normal distribution, x = -5 and z = -3.14 means that x = -5 is 3.14 standard deviations to the left of the mean
How to interpret the z-scoresFrom the question, we have the following parameters that can be used in our computation:
Distribution = Normal
z = -3.14
z = -5
In a standard normal distribution, which has a mean of 0 and a standard deviation of 1, a z-score of -3.14 indicates that the value is 3.14 standard deviations below the mean.
Since x is given as -5, we know that this value is 3.14 standard deviations below the mean value, which can be determined by multiplying the standard deviation by the z-score.
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Another job is advertising leaflets printed on sheets of A4 paper (210 x 297 mm).
The sheets are then folded into thirds as shown.
What are the measurements in millimetres of each folded leaflet
The measurements in millimeters of each folded leaflet are 210 mm by 99 mm.
What is the millimetre measurement unit?millimetre (mm), also spelled millimetre, unit of length equal to 0.001 metre in the metric system and the equivalent of 0.03937 inch in the imperial system.
When an A4 sheet of paper is folded in thirds, it yields three equal sections with widths of 210/3 = 70 mm and heights of 297 mm. As a result, each folded leaflet will be 210 mm by 99 mm (since 297/3 = 99).
As a result, each folded leaflet measures 210 mm by 99 mm in millimetres.
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The total number of signatures on a petition
doubles each week. In the sixth week, there
are 192 signatures on the petition. How many
signatures were on the petition in the first week?
(PLEASE give me an answer that is different from 192/2 96/2 etc..)
The total number of signatures on a petition doubles each week. In the sixth week, there are 192 signatures on the petition therefore the number of signatures which were on the petition in the first week is 3.
What is Double?This is referred to as twice as large as usual or is made up of two standard units or things.
Since the petition doubled every week then:
3 × 2 = 6 × 2 = 12 ×2 = 24 ×2 = 48×2 = 96×2 =192 thereby making the number of signatures on the petition in the first week as 3.
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Dawson simplifies the equation 4y-3=4(y + 1) and says it has no solution. Is dawson correct?
Let's start by substituting the right-hand side of the equation into the left-hand side:
What does the math equation mean?
Two expressions are combined by the equal sign to form a mathematical statement known as an equation. For instance, a formula might be 3x - 5 = 16. After solving this equation, we learn that the value of the variable x is 7.
4y - 3 = 4(y + 1)
4y - 3 = 4y + 4
Now, we can isolate y by subtracting 4y from both sides:
0 = y + 4
-4 = y
So, there is a solution to the equation: y = -4. This means that Dawson is incorrect in saying that the equation has no solution.
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A mother is 5 times as old as her daughter. In 6 years, the mother will be 3 times as old as her daughter. How old is each now?
The age of the mother and the daughter currently would be = 30 and 6 years respectively.
How to calculate the age of the daughter and mother?The previous age of the mother(M) = 5D
Where D = daughter
Let the current age of the mother after 6 years ;
M + 6 = 3( D+6)
substitute 5D for M
5D + 6 = 3( D+6)
5D + 6 = 3D+ 18
5D-3D = 18-6
2D = 12
D= 12/2
D = 6 years
Therefore the current age of the mother= 5×6= 30 years
and daughter = 6 years.
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Algebra:
Kapil's age is m years. What is his grandfather's age if he is 10 years more than thrice Kapil's age?
The grandfather's age if he is 10 years more than thrice Kapil's age is
3x +10.
What is Algebra?A branch of mathematics known as algebra deals with symbols and the mathematical operations performed on them.
Variables are the name given to these symbols because they lack set values.
In order to determine the values, these symbols are also subjected to various addition, subtraction, multiplication, and division arithmetic operations.
Given:
Kapil's age is m years.
His Grandfather is 10 years more than thrice Kapil's age.
Thrice Kapil's age = 3x
and, 10 years more than thrice Kapil's age = 3x + 10
Then, the age of Grandfather is
= 3x+ 10
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Find the value of x thank you
Answer:
x=166
Step-by-step explanation:
180-14= 166
x=166
The amount of water consumed per week by Montana residences is normally distributed with an unknown mean and a standard deviation of 10 gallons. A simple random sample of ten residences has a mean value of gallons. The city of Bozeman claim that the average water consumed in the state of Montana is not 125 gallons. (a) State the null and alternative hypothesis.
The null hypothesis, denoted by H0, represents the status quo or the default assumption. In this case, the null hypothesis is that the average water consumption in Montana residences is 125 gallons per week.
The alternative hypothesis, denoted by Ha, is the hypothesis that the researcher is trying to prove. In this case, the alternative hypothesis is that the average water consumption in Montana residences is not equal to 125 gallons per week.
So, the null and alternative hypotheses for this problem are:
H0: μ = 125 (where μ is the population mean water consumption in Montana residences)
Ha: μ ≠ 125 (where μ is the population mean water consumption in Montana residences)
Note that the alternative hypothesis is a two-tailed hypothesis since we are testing whether the population mean is not equal to 125, which could mean it is either greater or less than 125.
A factory has production lines A and B producing cookies. The two production lines produce 7280 cookies in total each day. If production line A produces 8% more cookies than production line B, find the difference of the numbers of cookies produced by production lines A and B in a day.
please tell me the whole process, thank you
The difference of the numbers of cookies produced by production lines A and B in a day is 280 cookies.
What are equations?When two algebraic expressions are equated, a mathematical statement is called an algebraic equation. P = 0 or P = Q, where P and Q are polynomials, are the generic forms of algebraic equations. One variable only algebraic equations are referred to as univariate equations, while multiple variable algebraic equations are referred to as multivariate equations. A balanced equation in algebra is a given. Because of this, the right side of the equation will equal the left side.
Let the cookies produced by production line A = x.
Let the cookies produced by production line B = y.
Given that, the two production lines produce 7280 cookies in total each day.
x + y = 7280
Also, production line A produces 8% more cookies than production line B.
x = y + y(8/100)
x = y + 0.08y
x = 1.08y
The system of equations thus are:
x = 1.08y
x + y = 7280
Substitute the value of x in equation 2:
x + y = 7280
1.08y + y = 7280
2.08y = 7280
y = 3500
Substitute the value of y in equation 2:
x + y = 7280
x + 3500 = 7280
x = 3780
The difference between the cookies produced is:
D = x - y
D = 3780 - 3500
D = 280
Hence, the difference of the numbers of cookies produced by production lines A and B in a day is 280 cookies.
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what is 80 days from today?
If today were January 1, 2023, then 80 days from today would be March 22, 2023. Keep in mind that the actual date that is 80 days from today will depend on the current date.
To determine the date that is 80 days from today, you can add 80 days to the current date.
As of my knowledge cutoff date of September 2021, the current date is irrelevant for today. However, I can tell you how to calculate the date that is 80 days from any given date.
Assuming you want to calculate 80 days from today's date, you would add 80 days to today's date. For example, if today were January 1, 2023, then 80 days from today would be:
January 1, 2023 + 80 days = March 22, 2023
So, if today were January 1, 2023, then 80 days from today would be March 22, 2023. Keep in mind that the actual date that is 80 days from today will depend on the current date.
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11+2²-2= [?]. Help please
Answer:
13
Step-by-step explanation:
11+2^2 -2
= 11+4-2
= 15-2
= 13
the radius of a circle is 6m find it’s area in terms of pi
Answer:
36π cm^2
Step-by-step explanation:
area= πr^2
= 36π cm^2
1. A circle is shown. 12 cm What is the diameter of the circle in centimeters? What is the radius of the circle in centimeters?
Answer: B: 113.04cm^2
Step-by-step explanation:
5) Karen deposits $4156 into an investment account that offers 3.45% interest per year, compounded daily. How much will her investment be worth after 6 years?
Answer:
$5111.76
Step-by-step explanation:
compounded daily means 365 times interest is compounded per year, so
A=4156x[tex](1+\frac{0.0345}{365}) ^{365x6}[/tex] ≈ 5111,76
Compare / Contrast Exponential Equations
1.) 2 (1/5)x-5
2.) y=4x
The functions y = 2 (1/5)^x - 5 and y = 4^x are compared as follows
y = 2 (1/5)^x - 5 y = 4^x
Initial value: 2 1
base function: 1/5 = decay function 4 = growth function
Translation: 5 units down no transformation
What is a decay function?
A decay function is a mathematical function used in various fields such as physics, engineering, economics, and machine learning, to model the reduction or decline of a value over time.
It is a type of function that decreases at a rate proportional to its current value, so that it approaches zero as time progresses.
Decay function are exponential functions with the base function as
0 < k < 1This is the opposite of growth function which has values greater than 1
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It takes 2 ounces of paint to completely cover all 6 sides of a rectangular prism box which holds 15 cups of sugar. Double the dimensions of the box. Approximately how much paint would be needed to cover the box? How much sugar would it hold?
The amount of paint needed if the dimensions are doubled is; 8 ounces.
The quantity of sugar which the rectangular prism would hold if the dimensions are doubled is; 120 cups of sugar.
What quantity of sugar would the prism hold when the dimensions are doubled?Recall,
Area of a rectangular prism = 2 (lw + lh + wh) and
Volume of a rectangular prism = l × w × h.
Hence, when the dimensions are doubled;
New Area = 2 × 4 (lw + lh + wh) = 4 × initial area.
Therefore, the quantity of paint needed is; 4 × 2 ounces = 8 ounces of paint.
Also, when the dimensions are doubled;
New Volume = 2l × 2w × 2h = 8 lwh.
New Volume = 8 × initial volume = 8 × 15 cups = 120 cups of sugar.
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Mrs Vahey is out buying dinner for the family. She bought a total of 9 hot
dogs or hamburgers. She spent $26. Hot dogs are $1.50 and hamburgers are
$4. How many of each did she purchase?
The number of packages of hot dogs is 4 hot dogs.
The number of packages of hamburgers is 5 hamburgers.
How to write the required system of linear equations?In order to write a system of linear equations to describe this situation, we would assign variables to the number of packages of hot dogs and number of packages of hamburgers respectively, and then translate the word problem into algebraic equation as follows:
Let the variable x represent the number of packages of hot dogs.Let the variable y represent the number of packages of hamburgers.Since Mrs Vahey bought a total of 9 hot dogs or hamburgers, the linear equation to represent this is as follows:
x + y = 9
Additionally, hot dogs are $1.50 and hamburgers are $4, and she spent a total of $26;
1.50x + 4y = 26
Next, we would use an online graphing calculator to plot the above system of linear equations in order to determine the solution (point of intersection) as shown in the graph attached below.
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explain why inequaliies of the form x > or x < c is any rational number have infinitely many solutions
Due to the fact that there are an unlimited number of values that are either more than or less than the variable x.
What personality type is rational?Rationales are intelligent, independent, and capable of both stubbornness and skepticism. Rationales typically spend a lot of time and effort trying to comprehend the manner in which the universe of ideas works.
What in math is reasonable and irrational?Every number that can be stated as a percentage or as a portion of a whole integer is considered rational. (For instance, -7, 2/3, and 3.75) Irrational numbers are those that can't be stated as a ratio of two integers or a fraction. They cannot be expressed in any finite way.
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The Function G Is Defined And Differentiable On The Closed Interval [-7,5] And Satisfies G(0)=5. The Graph Of Y = G(X), The Derivative Of G, Consist A Semicircle And Three Line Segments, As Shown In The Figure Above. (A) Find G(3) And G(-2). (B) Find The X-Coordinate Of Each Point Of Inflection Of The Graph Of Y =G(X) On The Interval -7 < X < 5. Explain
The graph of y = G(x) consists of a semicircle and three line segments. The function G is defined and differentiable on the closed interval [-7, 5] and satisfies G(0) = 5.
A) G(3) = 4.5 and G(-2) = 4
B) The x-coordinates of the points of inflection are x = -3, x = 0 and x = 4. This is because the graph has three separate linear segments, each with a point of inflection at the junction between them.
The graph of y = G(x) consists of a semicircle and three line segments. The function G is defined and differentiable on the closed interval [-7, 5] and satisfies G(0) = 5.
A) To find G(3) and G(-2), we need to identify the y-coordinate of each point on the graph. The y-coordinate of G(3) is 4.5 and the y-coordinate of G(-2) is 4.
B) To find the x-coordinates of each point of inflection of the graph of y = G(x) on the interval -7 < x < 5, we need to identify the points where the graph changes direction. These points are located at the junction between each of the three linear segments. Therefore, the x-coordinates of the points of inflection are x = -3, x = 0 and x = 4.
the complete question is :
The Function G Is Defined And Differentiable On The Closed Interval [-7,5] And Satisfies G(0)=5. The Graph Of Y = G(X), The Derivative Of G, Consist A Semicircle And Three Line Segments, As Shown In The Figure Above. (A) Find G(3) And G(-2). (B) Find The X-Coordinate Of Each Point Of Inflection Of The Graph Of Y =G(X) On The Interval -7 < X < 5. Explain your reasoning.
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Karen is replacing the carpet in her living room that measures 18 feet by 24 feet. The carpet she wants to install costs $24.99 per square meter (taxes included). If she can not order less than a full square meter of carpet, A) How much carpet should she order? B) How much will the carpet cost?
Karen should order 41 square meters of carpet, and the cost will be $1,024.59 (taxes included).
Describe Algebraic Expression?An algebraic expression is a mathematical phrase that consists of variables, numbers, and mathematical operations such as addition, subtraction, multiplication, and division. It is a combination of constants, variables, and operators that represent a value or a relationship between values.
For example, "3x + 5" is an algebraic expression where "3" and "5" are constants, "x" is a variable, and "+" is an operator. The expression can be evaluated by substituting a value for "x" and performing the necessary operations.
Algebraic expressions can also be simplified by combining like terms and using the rules of arithmetic to simplify the expression. For instance, the expression "2x + 3x" can be simplified to "5x" by adding the coefficients of the like terms "x".
Algebraic expressions are used extensively in algebra to represent equations and relationships between variables. They are also used in a wide range of mathematical and scientific applications, including physics, engineering, and finance.
To calculate the amount of carpet Karen needs to order, we first need to convert the measurements of her living room from feet to meters:
Length: 18 feet = 5.4864 meters (rounded to four decimal places)
Width: 24 feet = 7.3152 meters (rounded to four decimal places)
To find the area of the living room in square meters, we multiply these two values:
Area: 5.4864 meters x 7.3152 meters = 40.0637 square meters (rounded to four decimal places)
Since Karen can only order full square meters of carpet, she should order 41 square meters (to be safe).
To calculate the cost of the carpet, we simply multiply the area by the cost per square meter:
Cost: 41 square meters x $24.99/square meter = $1,024.59
So Karen should order 41 square meters of carpet, and the cost will be $1,024.59 (taxes included).
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Who prepares the questions for grade 7 math worksheets?
The questions for grade 7 math worksheets are typically prepared by math teachers, curriculum specialists, and educational publishers.
These professionals use their knowledge of math concepts and pedagogy to create questions that are appropriate for the grade level and aligned with educational standards.
Additionally, they may use feedback from students and other teachers to refine the questions and ensure they are effective for teaching and learning. It is important for the questions to be clear, accurate, and challenging in order to help students develop their math skills and prepare for more advanced concepts.
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The sum of the digits of a two-digit number is 10. When the digits are reversed, the new number is 36 more than the original number. Find the original.
Answer:
Original Number is 37
Step-by-step explanation:
Let
x = First digit
y = Second digit
x + y = 10
∴y = 10 - x
Original Number = 37
3 + 7 = 10
When reversed:
New Number is 36 more than the original Number:
37 + 36 = 73
∴New Number = 73
if AP = 9 in., AA' = 12 in, and AC = 8.4 in., what is A' C'?
Answer: 11.2 inch
Step-by-step explanation:
Geometry question. thanks for the help!
A rectangle is a rhombus =Sometimes
A parallelogram is a rectangle = Always
A quadrilateral is a pentagon = Never
What is a parallelogram?Parallelogram is a quadrilateral that has two pairs of parallel sides.
In a parallelogram, opposite sides and angles are equal.
The adjacent angles add up to 180 degrees.
We have,
A rhombus has four equal sides and its opposite angles are equal.
A rectangle is a rhombus if the rectangle becomes a square.
So,
We can say that a rectangle is sometimes a rhombus.
A parallelogram is always a rectangle.
But not all rectangle is a parallelograms.
A quadrilateral has four sides.
A pentagon has 5 sides.
So,
A quadrilateral is never a pentagon.
Thus,
A rectangle is sometimes a rhombus.
A parallelogram is always a rectangle.
A quadrilateral is never a pentagon.
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What is the solution to the equation 21⁄2 + x = 31⁄2? Record your answer on the
grid. Then fill in the bubbles.
Answer: To find the solution to the equation 21/2 + x = 31/2, we need to isolate x on one side of the equation. Subtracting 21/2 from both sides gives us:
x = 31/2 - 21/2
Combining the fractions on the right side gives us:
x = 10/2
Dividing the numerator by the denominator gives us:
x = 5
So the solution to the equation 21/2 + x = 31/2 is x = 5. To fill in the bubbles on the grid, you would need to write the number 5 in the appropriate row and fill in the corresponding bubbles to indicate the digits of the number.
Step-by-step explanation:
Slauson only move about 5 ft./min.. How many minutes would it take a slow to walk across 100 yard foot field
Time taken to walk across 100 yard field is 60 minutes.
What is Speed?Speed is the unit rate in terms of distance travelled by an object and the time taken to travel the distance.
Speed is a scalar quantity as it only has magnitude and no direction.
Given that,
Speed of Slauson = 5 ft./min
That is, in 1 minute, Slauson can walk 5 feet.
We have to find the time taken to walk 100 yard.
1 yard = 3 feet
100 yard = 300 feet
Speed = Distance / Time
Time = Distance / Speed
Time = 300 / 5 = 60 minutes
Hence it will take 60 minutes to walk across a 100 yard field.
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PLSSSS HURRY AND HELP ME
Sylvie needs $110 for a concert ticket. She already has $16 and she can earn the rest by working 10 hours at her job. If h represents her hourly earnings, which of the following equations can be solved to find Sylvie’s hourly earnings? Select all that apply.
A. 110 – 16 = 10h
B. 110 = 16h + 10
C. 16 = 110 – h
D. 110 = 16 + 10h
E. 110 + 16 = 10h
D) 110 = 16 + 10h
C) 16 = 110 – h
Step-by-step explanation:
Think about it. She NEEDS $110 but she only has $16. So now it's $110=$16 {or C}.
She can EARN the rest {H} by working her hours.
Juan recorded the total number of free throws he attempted during practices. His results are shown in the table.
Total Number of Free
Throws Attempted (y)
Number of
Practices (x)
1
234
45
80
115
150
Juan's coach told him to attempt 10 free throws before the first practice and then 35 free throws each practice. Did Juan follow his coach's instructions?
OYes, his free throws can be represented by y 35x + 10.
OYes, his free throws can be represented by y = 45x.
No, his free throws can be represented by y = 35x.
No. his free throws can be represented by y = 45x.
The equation of line is y = 35x + 10 and Juan followed the instructions
The solution is Option A. Yes, his free throws can be represented by
y = 35x + 10
What is an Equation of a line?The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept
And y - y₁ = m ( x - x₁ )
y = y-coordinate of second point
y₁ = y-coordinate of point one
m = slope
x = x-coordinate of second point
x₁ = x-coordinate of point one
The slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )
Given data ,
Let the equation of line be represented as A
Now , the value of A is
Let the first point be P ( 1 , 45 )
Let the second point be Q ( 2 , 80 )
Now , the slope of the line is m = ( y₂ - y₁ ) / ( x₂ - x₁ )
Substituting the values in the equation , we get
Slope m = ( 80 - 45 ) / 2 - 1
Slope m = 35
Now , the equation of line is y - y₁ = m ( x - x₁ )
Substituting the values in the equation , we get
y - 45 = 35 ( x - 1 )
On simplifying the equation , we get
y - 45 = 35x - 35
Adding 45 on both sides of the equation , we get
y = 35x + 10
Hence , the equation of line is y = 35x + 10
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The complete question is :
Juan recorded the total number of free throws he attempted during practices. His results are shown in the table.
Number of practices = { 1 , 2 , 3 , 4 }
Number of throws attempted = { 45 , 80 , 115 , 150 }
Juan's coach told him to attempt 10 free throws before the first practice and then 35 free throws each practice. Did Juan follow his coach's instructions?
A) Yes, his free throws can be represented by y = 35x + 10.
B) Yes, his free throws can be represented by y = 45x.
C) No, his free throws can be represented by y = 35x.
D) No. his free throws can be represented by y = 45x.
9. Johnny found a fraction equivalent to the
one shown by the point on the number
line. Which fraction could Johnny have
found? Explain. 4.FR.1.3
A
B
0
1.
1
8
2/8
3
8
4 ÷ 2
8÷2
482/23
because
1. because 4
||
58 114
1
4
1
618
+710
8
1
The equivalent fraction to the given fraction is 1/2. Therefore, option C is the correct answer.
What is an equivalent fraction?Equivalent fractions are two or more fractions that are all equal even though they different numerators and denominators.
On the number line, the fraction marked is 3/6.
Here, divide both numerator and denominator by 3
We get (3÷3)/(6÷3)
= 1/2
Therefore, option C is the correct answer.
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"Your question is incomplete, probably the complete question/missing part is:"
Johnny found a fraction equivalent to the one shown by the point on the number line. Which fraction could he have found?
A) 1/4
B) 1/3
C) 1/2
D) 2/3
How do you find the center of a triangle?
Answer:
Step-by-step explanation:
There are several ways to find the center of a triangle:
The Centroid: The centroid is a point that divides each median of the triangle into two equal parts. It is the average of the vertices of the triangle. To find the centroid, you simply average the x-coordinates and the y-coordinates of the vertices:
G = (x1 + x2 + x3)/3, (y1 + y2 + y3)/3
where (x1, y1), (x2, y2), and (x3, y3) are the coordinates of the vertices of the triangle.
The Circumcenter: The circumcenter is the center of the circle that passes through all three vertices of the triangle. To find the circumcenter, you need to find the midpoint of each side of the triangle and then draw perpendicular bisectors to each side. The point where the perpendicular bisectors intersect is the circumcenter.
The Orthocenter: The orthocenter is the point where the altitudes of the triangle intersect. The altitudes are the perpendicular lines from each vertex to the line that contains the opposite side. To find the orthocenter, you need to find the equations of the altitudes and then solve for the point where they intersect.
Note: If the triangle is an equilateral triangle, then the circumcenter and the centroid are the same. If the triangle is a right triangle, then the orthocenter and the circumcenter are the same.