Answers
Answer:
d
Step-by-step explanation:
Related Questions
A triangle has sides with lengths of 3cm, 6cm and 9cm. Is the triangle right? Explain the process you used to determine if is a right triangle and show your math work.
Answers
A triangle that has sides with lengths of 3cm, 6cm and 9cm is not a right-angled triangle.
What is the Triangle Inequality Theorem?In Mathematics, the Triangle Inequality Theorem is represented by this mathematical expression:
b - c < a < b + c
Where:
a, b, and c represent the side lengths of this triangle.
By applying the Triangle Inequality Theorem to the side lengths of this triangle, the right-angled triangle that can be formed would be determined as follows:
6 + 3 > 9
9 > 9 (False and not a right-angled triangle).
In conclusion, we can logically deduce that the two (2) short side lengths does not exceed the long side lengths and as such it is not a right-angled triangle.
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How do I calculate tables in Word?
Answers
To have your result appear in a certain table cell, click there. Click Formula under Table Tools on the Layout tab.
what is sequence ?A sequence is a group of numbers (sometimes known as "terms"), for instance, 2, 5, 8. Some sequences have a particular pattern that can be used to extend them indefinitely. Use the example of 2,5,8 and continue the series by adding 3. There are formulas that outline the locations of words inside a sequence. Informally, a sequence is a group of objects that are arranged in some way in mathematics (or events). It is made up of parts, much like a set (also called elements or terms). The entire, potentially infinite number of arranged objects is referred to as the length of the sequence. putting two or more things in a logical order. Chronological.
given
To have your result appear in a certain table cell, click there. Click Formula under Table Tools on the Layout tab.
Once you have confirmed that Word has included the cells you wish to sum in the Formula box's text within the parentheses, click OK.
The equation =SUM(ABOVE) sums the figures in the column above the one you are in.
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Help with geometry similar triangles. Given AB || CD Find the length of BE.
Answers
Answer:
BE = 24
Step-by-step explanation:
These triangles are similar because of AA (Angle, Angle)
The given gives us a pair of parallel sides, allowing us to see that angles C and B are congruent due to being alternate interior angles.
Furthermore, we see that <AEB = <CEB due to vertical <'s being =
Next, we must set up a proportion;
If we create a proportion between the triangles, we must divide corresponding sides;
52/26 = 5x -7 / 2x+2 because we divided both triangles by using the same corresponding sides divided by the same corresponding side.
Simplify 52/26 to 2 and we get that 2 = 5x-7 / 2x+2
Multiply both sides by 2x+2 to get 4x+4 = 5x-7
Subtract 4x from both sides and add 7 from the right side to isolate x and get x=11
Finally, substitute the value of 11 for x into BE 2(11) + 2 and get 22 + 2 =24
What is an algebraic expression for this word phrase? 7 more than the product of 5 and n
Answers
a. 5 + 7n is the algebraic expression for 7 more than the product of 5 and n
How is this determined?The expression needed to indicate the value of 5 added to the product of 7 and n is "5 greater than the product of 7 and n."
The equation 7n represents the product of 7 and n, and the expression 5 + 7n is obtained by adding 5 to 7n.
This is the proper algebraic expression for the phrase that was given.
It follows that 5 + 7n = 5 + 21 = 26, which is 5 more than the sum of the products of 7 and 3. As an illustration, if we substitute a value of 3 for n, the expression 7n would equal 21.
Because option b is a product of 5 and (7+n), which is not equivalent to 5 greater than the product of 7 and n, the other choices are incorrect.
The product of option c and (5+n) is 7, but it also does not equal 5 greater than the product of 7 and n.
A sum of 5, 7, and n makes up option d, which also does not equal 5 greater than the result of the product of 7 and n.
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What is the sum of additive inverse of 29 and 61?
Answers
The sum of the additive inverse of 29 and 61 is equal to -90.
The sum of the additive inverse of two numbers is equal to zero. The additive inverse of a number is the (opposite) number which when added to the original number yields zero. The formula for calculating the additive inverse of a number is additive inverse (x) = - x. The additive inverse of 29 and 61 can be calculated using the formula, additive inverse (29) = -29 and additive inverse (61) = -61.
Therefore, the sum of the additive inverse of 29 and 61 will be -29 + -61 = -90. This can be confirmed by adding 29 and 61 which will yield 90 and then subtracting 90 from zero to yield -90. In other words, the sum of the additive inverse of 29 and 61 is equal to -90.
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Find an expression to present the area of the trapezoid below
Answers
Area of a trapezoid is found with the formula, A=(a+b)/2 x h. so the answer is 9(w-3) / (w + 7) (w + 2).
What is meant by trapezoid ?
An open, flat object with four straight sides and one pair of parallel sides is referred to as a trapezoid or trapezium.A trapezium's non-parallel sides are referred to as the legs, while its parallel sides are referred to as the bases. The legs of a trapezium can also be parallel.The trapezoid belongs to the category of shapes that only has one set of parallel sides. The isosceles trapezoid, which has two non-parallel sides of the same length, falls under a specific category. Although they are both quadrilaterals, a rhombus and a trapezoid are not the same thing.An isosceles trapezoid has equal base angles and diagonals. The midpoints of the two opposing sides are parallel to the place where the diagonals intersect.To learn more about trapezoid refer to
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Rachel took out a personal loan for $4,500 with a monthly payment of $173.06 for 36 months. determine the finance charge on rachel's loan if she takes all 36 months to pay it off. a. $48.06 b. $1,730.16 c. $4,500.00 d. $6,230.16 please select the best answer from the choices provided a b c d
Answers
Rachel's personal loan of $4,500 with a 12% annual interest rate for 36 months will have a finance charge of $6,230.16, meaning that she will need to pay a total of $10,730.16 to pay off the loan amount.
The finance charge on Rachel's loan can be calculated by multiplying the loan amount by the interest rate and then multiplying by the loan term (in months).
Finance Charge = (Loan Amount x Interest Rate x Loan Term)
Finance Charge = ($4,500 x 0.12 x 36 months)
Finance Charge = $6,230.16
The finance charge on Rachel's loan can be calculated by multiplying the loan amount by the interest rate and then multiplying by the loan term (in months). In this case, Rachel took out a $4,500 loan with a 12% annual interest rate for 36 months. The total finance charge for this loan can be calculated as follows: Finance Charge = ($4,500 x 0.12 x 36 months) = $6,230.16. This means Rachel will need to pay a total of $10,730.16 to pay off the loan, including the finance charge. This also means that Rachel's monthly payments of $173.06 will go towards the principle balance of the loan and the interest accrued during each month.
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Two ice cream shops in the mall sell sundaes. Let x equal the number of scoops of ice cream. Larry's Ice Cream Shop in represented by the expression 1.2+1. Ice Cream World's price in represented by the expression 0.4(0.3x+1). Which Statement is true?
A: the two shops charge the same price for a three scoop sundae.
B: the two shops always charge the same for sundaes with the same number of scoops.
C: the two shops never charge the same price for sundaes with the same number of scoops
D: the two shops charge the same for a 2 scoop sundae
Answers
The statement that is true on the ice cream shops selling sundaes is C: the two shops never charge the same price for sundaes with the same number of scoops
How to find the ice cream sold ?Larry's Ice Cream Shop has scoops modeled by the model 1.2x + 1 while Ice Cream World's price is modeled by 0.4 ( 0.3x + 1 ).
They will therefore have the same price at :
1.2x + 1 = 0.4 ( 0.3x + 1 )
1. 2 x + 1 = 0. 12 x + 0.4
1. 2 x - 0. 12 x = 0. 4 - 1
1. 08 x = - 0. 6
x = - 0. 6 / 1. 08
x = - 0. 5556
This means that the two shops never charge the same price.
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Find FL if H is the circumcenter of △EFG , EH=5.06 , and LH=2.74 . Round to the nearest hundredth
Answers
If H is the circumcenter of triangle EFG , EH = 5.06 , and LH = 2.74 then FL is calculated to be 4.25
How to find H in the triangleApplying Pythagoras theorem, △EFG
Information given from the question is interpreted as
LH = opposite
FL = adjacent
FH = EH = hypotenuse
Using Pythagoras theorem given by the the formula
hypotenuse² = opposite² + adjacent²
plugging the values as in the problem
let x be the required distance
5.06² = 2.74² + x²
x² = 25.6036 - 7.5076
x² = 18.096
x = √18.096
x = 4.2539
x = 4.25 (to the nearest hundredth)
hence x = FL = 4.25
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PLEASE ANSWER IN UNDER 5mins!!!!!!!!!!!!!!!! pls help i appreciate you!
Answers
Answer:
[tex]\textsf{B)} \quad \dfrac{x^2+3x-4}{2x-1}[/tex]
Step-by-step explanation:
Given rational expression:
[tex]\dfrac{\dfrac{x^2+2x-3}{x-4}}{\dfrac{2x^2+5x-3}{x^2-16}}[/tex]
[tex]\textsf{Factor}\;\;x^2+2x-3:[/tex]
[tex]\implies x^2+3x-x-3[/tex]
[tex]\implies x(x+3)-1(x+3)[/tex]
[tex]\implies (x-1)(x+3)[/tex]
[tex]\textsf{Factor}\;\;2x^2+5x-3:[/tex]
[tex]\implies 2x^2+6x-x-3[/tex]
[tex]\implies 2x(x+3)-1(x+3)[/tex]
[tex]\implies (2x-1)(x+3)[/tex]
[tex]\textsf{Factor}\;\;x^2-16:[/tex]
[tex]\implies x^2-4x+4x-16[/tex]
[tex]\implies x(x-4)+4(x-4)[/tex]
[tex]\implies (x+4)(x-4)[/tex]
Therefore:
[tex]\implies \dfrac{\dfrac{x^2+2x-3}{x-4}}{\dfrac{2x^2+5x-3}{x^2-16}}=\dfrac{\dfrac{(x-1)(x+3)}{x-4}}{\dfrac{(2x-1)(x+3)}{(x+4)(x-4)}}[/tex]
[tex]\textsf{Apply\:the\:fraction\:rule}:\quad \dfrac{\dfrac{a}{b}}{\dfrac{c}{d}}=\dfrac{a\cdot \:d}{b\cdot \:c}[/tex]
[tex]\implies \dfrac{ (x-1)(x+3)(x+4)(x-4)}{(x-4)(2x-1)(x+3)}[/tex]
Cancel the common factors:
[tex]\implies \dfrac{ (x-1)(x+4)}{(2x-1)}[/tex]
Expand the numerator:
[tex]\implies \dfrac{x^2+3x-4}{2x-1}[/tex]
How many cm is 2 fingers dilation?
Answers
2 fingers dilation is normally 2 cm in measurement.
What is Dilation ?Dilation is the process of increasing an object's size without altering its form. Depending on the scale factor, the object's size may rise or shrink. A square of side 5 units can be widened to a square of side 15 units using dilation math, but the square's form doesn't change.
A dilation is a function f from a metric space M into itself that, for any locations x, y in M, fulfills the identity d=rd, where d is the distance between x and y and r is a positive real integer. Such a dilatation is a resemblance of the space in Euclidean space.
Meaning of Dilation in Math. Resizing an item uses a transition called dilation. Dilation is used to enlarge or contract the items. The result of this transformation is a picture with the same shape as the original. However, there is a variation in the shape's size.
Normally 1 finger dilation represents 1 cm so by unitary methord 2finger dilation is 2 cm
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The extension of two fingers is usually 2 cm.
What is dilation?Dilation is the process of enlarging an object without changing its shape. Depending on the magnification, the size of the object will increase or decrease. A 5 unit square can be expanded to a 1l5 unit square using dilation math, but the shape of the square remains the same. A dilation is a function f from the metric space M to itself, satisfying the identity d=rd for any position x,y in M. where d is the distance between x and y and r is a positive real number. Such an extension resembles the space of Euclidean space.
Stretching Used in Mathematics To change the size of an element, we use a transition called Stretch. Grow is used to enlarge or shrink an object. The result of this transformation is an image with the same shape as the original image. However, there is variation in the size of the shape.
Normally, one finger will stretch 1 cm, so in the unified method, two fingers will stretch 2 cm.
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what is the coefficient of the x^4 y^3 term in the expansion of (x-2y)^7?
Answers
So the coefficient is -280
Help asap
2. A store sells two shades of purple paint. The tables show the number of gallons of blue paint and the number of gallons of red paint used to make each shade of purple paint.
Shade A
Number of Gallons of Blue Paint
8
12
16
24
Number of Gallons of Red Paint for shade A
12
18
24
36
Shade B
Number of Gallons of Blue Paint
5
7
9
12
Number of Gallons of Red Paint
10
14
18
24
Based on the tables, which statements are true? Choose all that apply.
A. The ratio of the number of gallons of red paint to the number of gallons of blue paint in
shade B is 2:1.
B. Shade B should be redder than shade A because shade B has 2 gallons of red paint for every 1 gallon of blue paint. Shade A has 13 gallons of red paint for every 1 gallon of blue paint.
C. Shade A should be bluer than shade B because shade A has 1 gallon of blue paint for every 2 gallons of red paint. Shade B has 1 gallon of blue paint for every 1/2 gallons of red paint.
D. Shade A should be bluer than shade B because shade A has gallons of blue paint for every 1 gallon of red paint. Shade B has gallon of blue paint for every 1 gallon of red paint.
E. If the store owner adds 1 gallon of blue paint to 20 gallons of shade A, she creates 21 gallons
of shade B.
Answers
Statement A is correct. The ratio of the number of gallons of red paint to the number of gallons of blue paint in shade B is 2:1.
What is the ratio?
Equivalent ratios are those that are the same when compared. Two or more ratios can be compared to determine whether or not they are equal. For example, the ratios 1:2 and 2:4 are equivalent.
Given that,
Shade A Total
Number of Gallons of Blue Paint: 8 12 16 24 60
Number of Gallons of Red Paint 12 18 24 36 90
Shade B
Number of Gallons of Blue Paint: 5 7 9 12 33
Number of Gallons of Red Paint 10 14 18 24 66
The ratio of the number of gallons of red paint to the number of gallons of blue paint in shade B is 66: 33 = 2:1.
It means for every 2 gallons of red paint for every 1 gallon of blue paint.
The ratio of the number of gallons of red paint to the number of gallons of blue paint in shade A is 90:60 = 3:2.
It means for every 3 gallons of red paint for every 2 gallons of blue paint.
The total gallon in shade A is (60 + 90) = 150.
If she adds 1 gallon of blue paint to 20 gallons of shade A.
Then she creates 150/20 = 7.5 gallons of blue paint in shade B.
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Danielle earns a 7.75% commission on everything she sells at the electronics store where she works. She also earns a base salary of $725 per week. How much did she earn last week if she sold $4,300 in electronics merchandise? Round your intermediate calculations and answer to the nearest cent.
Answers
Danielle earned a total of $1,058.25 last week.
What is Commission?A commission is a percentage of total sales as determined by the rate of commission. A commission is a profit paid due to making a sale.
commission=rate of commission⋅total sales.
To find the commission on a sale, multiply the rate of commission by the total sales.
commission = rate of commission⋅total sales.
commission = 7.75% x $4,300
commission = 0.0775 x $4,300
commission = $333.25
Danielle's earnings will be the addition of both her commission and base salary
Total = commission + base salary
Total = $333.25 + $725
Total = $1,058.25
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Shannon operates an orange juice stand. On Monday she used 1 1/2 bags of oranges. On Tuesday she used 2 times as many oranges as on Monday. How many bags of oranges did Shannon use on Tuesday?
Answers
The number of bags of oranges did Shannon use on Tuesday will be 3 bags.
What is Algebra?Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.
The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.
Shannon operates an orange juice stand. On Monday she used 1 1/2 bags of oranges. On Tuesday she used 2 times as many oranges as on Monday.
The number of oranges will be calculated as,
⇒ 2 × (1 ¹/₂)
⇒ 2 × (1 + ¹/₂)
⇒ 2 + 2 × ¹/₂
⇒ 2 + 1
⇒ 3 bags
The number of bags of oranges did Shannon use on Tuesday will be 3 bags.
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aidan is going to buy movie tickets for his friends. matinee tickets are $5 each and evening tickets are $10 each. aidan can spend at most $50 dollars. write and graph an inequality to represent the number of matinee tickets, x, and evening tickets, y, Aiden can buy
Answers
The inequality to represent the number of matinee tickets, x, and evening tickets, y, Aiden can buy is,
⇒ 5x + 10y ≤ 50
What is Inequality?A relation by which we can compare two or more mathematical expression is called an inequality.
Given that;
Aidan is going to buy movie tickets for his friends. matinee tickets are $5 each and evening tickets are $10 each. Aidan can spend at most $50 dollars.
Now, Let the number of matinee tickets Aiden can buy = x
And, The number of evening tickets Aiden can buy = y
So, We can formulate;
The correct inequality is,
⇒ 5x + 10y ≤ 50
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V/-15=20 what does V equal?
Answers
Answer:
-300
just do inverse operation, and multiply both sides of the equation by -15 to cancel out the -15 from the denominator and you get V=20(-15)
solve for 20(-15) and you get -300
3. Norma has a collection of 80 books. 32 of the books are non-fiction. What percent of the books are non-fiction?
ر
Answers
A ratio or value that may be stated as a fraction of 100 is called a percentage.
How do you define percentages?A percentage is a figure or ratio that can be stated as a fraction of 100 in mathematics. If we need to determine a percentage of a number, multiply it by 100 and divide it by the total. So, a part per hundred is what the percentage refers to. Percent signifies for every 100. The sign "%" is used to denote it.
The value must be divided by the entire value, and the resulting number must then be multiplied by 100 to get the percentage.
The simplest way to use percentages is to compare two numbers, with the second number being rebased to 100.
Therefore, the answer is 25%.
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gunnar's car get 22.4 miles per gallon, and his gas tank can hold 17.82 gallons of gas. how many miles can gunnar travel if he uses all of his gas tank
Answers
In the given word problem the Gunnar's car can travel 399.17 miles travel using 17.82 gallon of gas.
What is word problem?A math word problem is a question that is written as one or more sentences and asks students to use their mathematical understanding to solve an issue from "real world." In order for kids to understand the word problem, they must be familiar with the terminology that goes along with the mathematical symbols that they are used to.
Gunnar's car travel using per gallon of gas = 22.4 miles.
According to the given question,
Gunnar's car can hold 17.82 gallons of gas. Then number of miles does Gunnar's car can travel is ,
=> 22.4 × Car's total tank has hold
=> 22.4 × 17.82
=> 399.17 miles
Hence the Gunnar's car can travel 399.17 miles travel using 17.82 gallon of gas.
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Suppose that 60% of the people who inquire about investments at a certain brokerage firm end up investing in stocks, 50% end up investing in bonds, and 44% end up investing in both stocks and bonds. What is the probability that a person who inquires about investments at this firm will invest in stocks or bonds (or both)?
Answers
Suppose that 60% of the people who inquire about investments at a certain brokerage firm end up investing in stocks. The probability that a person who inquires about investments at this firm will invest in stocks or bonds (or both) is 66%.
How to find the probability?60% invest in stocks
50% invest in bonds
44% invest in both bonds and stocks
Percent (only stock) = 60% -44%
Percent (only stock) = 16%
Percent (only bond) = 50% - 44%
Percent (only bond) = 6%
Percent (both) = 44%
Total = 16% + 6% + 44%
Total = 66%
Therefore the probability is 66%.
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Help with geometry similar triangles. Solve for x if ABC ~ JKL.
Answers
Seg. AB is corresponding to Seg. JK (we won’t need it to solve)
Seg. BC is corresponding to Seg. KL
Seg. CA is corresponding to Seg. LJ.
Now to find the scale factor. Since the CA-LJ relation is the only one where we know both sides, we’ll use that as the reference point.
25/15 is the same as 5/3, which is the scale factor between the two triangles.
This sets up this equation:
2x+5 = 9(5/3)
2x+5 = 45/3 (multiply)
2x+5 = 15 (simplify)
2x = 10 (subtraction PoE)
x = 5 (division PoE)
X is 5 if triangle ABC is similar to triangle JKL.
May I have help?
True or False: The graph represents a function.
Answers
Answer:
Step-by-step explanation:
It's gonna be true in just trust me when i say that im that guy
Answer:
true
Step-by-step explanation:
Why is the center of dilation important?
Answers
A reference point used to appropriately scale the dilation of a figure.
Is the dilation center important?A dilation’s center is a fixed point in the plane around which all points expand or shrink. Under a dilation (k 1), the sole invariant (not changing) point is the center, which might be within, outside, or on a figure. Scale Factor: In a dilatation, the scale factor is the amount by which the figure is stretched or shrunk. Dilation Center: The center of dilation is a reference point used to scale the dilation of a figure suitably.
Dilation of the pupil allows more light into the eye, much as opening a door allows light into a dark room. Dilation allows your eye doctor to examine for a variety of common eye issues, including diabetic retinopathy.
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Can you spot any mistakes below?
Q1. Make y the subject of the formula:
k=y(squared)+a
√k =y+a
√k - a=y
y=√k-a
Q2. Express in terms of t
t=v/4+1
t-1+v/4
t-1/4=v
Please help I do not know if there are any mistakes
Answers
In Q1, The equation k = y² + a is correct,
To make y the subject of the formula, √k = y + a is incorrect, it should be √k = y + √a
√k - √a = y
In Q2, t = v/4 + 1 is correct
t - 1 + v/4 is incorrect, it should be t - 1 = v/4
t - 1/4 = v
so the correct answer is t-1/4=v
what is the equation of the line shown in the graph?
Answers
The equation for a horizontal line that passes through the points (a, b) is y = b, where b is constant because b is the y-intercept in the equation y = mx + b.
What is the equation for a horizontal line on a graph?As a result of the fact that in the equation y = mx + b, where 'b' is the y-intercept, there is no change in the value of y on the horizontal line and the slope is zero, the equation of a horizontal line is y = b, where 'b' is constant.A horizontal line's points all share the same y-coordinate.
When two points share the same y-coordinate, b, the line's equation is y=b. The coordinates (0,b) are known as the y-intercept of a horizontal line y=b. Horizontal lines are consistently perpendicular to the x-axis. The formula for the lines is always y = a y= a y= a, where a stands for a real number.
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A box contains twelve 16 GB pen drives and eighteen 32 GB pen drives. Two 16 GB pen drives are defective, and four 32 GB pen drives are defective. If a pen drive is picked at random, what is the probability that it is a 16 GB pen drive or defective?
Answers
Therefore , the solution to the given problem of probability comes out to be P =0.6.
How are probabilities determined?Probability theory, a subfield of mathematics, calculates the likelihood that an event will occur or that a statement is true. The probability of an event is a number between 0 and 1, where 1 denotes certainty and around 0 denotes how probable the event is to occur. A likelihood is a numerical representation of the likelihood that a particular event will occur. Probabilities may alternatively be stated as percentages with a range of 0% to 100% or as a number between 0 and 1. the percentage of events over a wide range of comparably likely outcomes that happen in comparison to all other conceivable outcomes.
Here,
Given :
Twelve 16 GB and 18 32 GB pen drives are packaged together in a box.
To find the probability of 16gb pen drive is defective:
Thus,
Total pendrive = 30
Event = 16gb pen drive or defective:
The probability of it is 16gb pendrive = 12/30 = 0.4
The probability of it is defective pendrive = 6/30 = 0.2
thus,
total probability (16gb pen drive or defective) = 0.4 +0.2 =0.6
Therefore , the solution to the given problem of probability comes out to be P =0.6.
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What is the midpoint segment theorem?
Answers
The segment joining the midpoints of two sides of a triangle is parallel to and half the length of the third side.
The midpoint theorem states that the line segment drawn from the midpoint of any two sides of the triangle is parallel to the third side and is half of the length of the third side of the triangle.
A line segment that connects two midpoints of the sides of a triangle is called a midpoint segment.
There are two important properties of the midsegments Theorem:
The Midsegment Theorem states that the midsegment connecting the midpoints of two sides of a triangle is parallel to the third side of the triangle, and the length of this midsegment is half the length of the third side
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Find the length of the third side, if necessary, write in simplest radical form
Answers
What is the substitution principle in math?
Answers
The substitution principle in math we substitute the value of one variable with another one and solve the equation.
By changing the value of another variable in an equation, the variable can be eliminated using this method. Thus, the elimination by substitution method is the name given to this technique.
As we are aware, the substitution approach entails solving the equation to determine the value of the variable, which is then substituted in the other equation. The elimination approach, in contrast, involves removing variables from the equation such that the equation's system can be reduced to being the function of a single variable.
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In a random sample of 9 residents of the state of Montana, the mean waste recycled per person per day was 2.8 pounds with a standard deviation of 0.68 pounds. Determine the 90% confidence interval for the mean waste recycled per person per day for the population of Montana. Assume the population is approximately normal.
Step 1 of 2 : Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
Answers
The confidence interval is given as : 2.379 < u < 3.221
How to solve for the confidence intervalHow to solve for the confidence interval
we have the following details to solve the problem with
n = 9 residents
mean = x = 2.8
s = 0.68
significance level ∝ = 1 - c
= 1 - 0.9
= 0.1
the confidence interval is given as:
C.I = x ± t ∝/2 , n - 1 * s/√n
t ∝/2 , n - 1 is the critical value. This is = 1.859
C.I = 2.8 ± 1.859 * 0.68 / √9
C.I = 2.8 ± 0.421
C.I = 2.8 - 0.421, 2.8 + 0.421
C.I = 2.379 < u < 3.221
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