MATHEMATICS HIGH SCHOOL

What is the value of the x in this equation x/8 = 7​

Answers

Answer 1
Answer:

Answer:

56

Step-by-step explanation:

x/8= 7

Cross multiply

x= 7×8

x= 56

Hence the value of x is 56

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Solve the equation for y(x-3)^=4y-12

Answers

remember yuo can do anything to an equaiton as long as you do it to both sides


(x-3)=4y-12
x-3=4y-12
add 12 both sides
x-3+12=4y+12-12
x+9=4y+0
x+9=4y
divid both sides by 4
(x+9)/4=y
First 

y(x + -3) = 4y + -12\

Then you would Reorder the terms:
y(-3 + x) = 4y + -12 (-3 * y + x * y) = 4y + -12
 
And theses (xy + -3y) = 4y + -12(xy + -3y) = 4y + -12

then we would Reorder the terms:xy + -3y = -12 + 4y

then you would Move all terms containing x to the left, all other terms to the right.

so that means we would Add '3y' to each side of the equation.xy + -3y + 3y = -12 + 4y + 3y

then you would want to Combine like terms: -3y + 3y = 0xy + 0 = -12 + 4y + 3y xy = -12 + 4y + 3y
Combine these two 4y + 3y = 7yxy = -12 + 7y
then we would want to Divide each side by 'y'.x = -12y-1 + 7

so after simplifying it, it would be x = 7 + -12y-1

Which statement defines a mutual fund?

Answers

I am not seeing any choices. Thus, I will just give you the definition of mutual fund. A mutual fund is an investment fund in which investors put their resources in investments to be able to earn higher interest. Mutual fund also has a high security that gives you worry-less investment.

Answer:a group of investments that mabny individual investors hold in common

Step-by-step explanation:

Glen is being tested for a contagious disease. The test is 99% accurate and in actuality 0.1% of the population has the disease. Should Glen demand to be retested or start treatment right away? Explain.

Answers

I think Glen should demand to be rested than start treatment right away. Although the test is 99% accurate and only .1% of the population has the disease, there is no assurance that he will not get included in the .1% of the population. Also, he should be retested for the sake of reliability.

Answer:

The answer is B. Glen should demand to be retested as the probability that he has the disease given he test positive is only 0.08

Step-by-step explanation:

You are looking for a conditional probability. P(has disease given he tested positive).

This probability is  9 /109  = 0.082. Which means that there is only an 8% chance that he actually has the disease for a test that is 99% accurate.

Therefore, Glen should demand to be retested as the probability that he has the disease given he tested positive is only 0.08

What is the volume of a cube with an edge length of 0.8 m?Enter your answer in the box.

m³=

Answers

0.8 * 0.8 * 0.8 is the volume. 0.512 m3.

Answer:

Just took the quiz ;-;  the answer is "0.512"

Thank me later xD

What is the midpoint of the line segment with endpoints (-2, -4) and (4,6)?

Answers

Answer:

(1,1)

Step-by-step explanation:

use the midpoint formula to find the midpoint of the line segment

A rectangle has an area of 8 square centimmetres and a perimeter of 12 cm. What are the width and breath?

Answers

Let the Length be L and the Width be W

The area is 8 cm²
LW = 8

The perimeter is 12
2(L + W) = 12
L + W = 6

Solve L and W:
LW = 8 --------------- (1)
L + W = 6------------ (2)

Equation (2):
L + W = 6
L = 6 - W -------------- Sub into (1)
(6 - W) W = 8
6W - W² = 8
W² - 6W + 8 =0 
(W -2 )(W - 4) = 0
W = 2 or 4

When W =2, L = 6 - 2 = 4
When W = 4, L = 6 - 4 = 2

Answer: The Width is 2 cm and the Length is 4 cm
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