MATHEMATICS HIGH SCHOOL

What is the slope of the line through (-1, 4) and (1, -2)

Answers

Answer 1

Answer:

Answer:

Slope = -3

Step-by-step explanation:

The slope is the change in y over the change in x

The slope formula is m=y₂-y₁/x₂-x₁ (y over x)

So, plug in your coordinates (the subscript represents the order in which your points are going to be subtracted in)

So, you would get m=-2-4/1-(-1)

Simplify (first subtract the top, then subtract the bottom)

This would get you to -6/2 (remember your rules: a negative and a negative makes a positive)

-6/2 would get you to -3

-3 is the answer

Answer 2

Answer: The correct answer is A

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The scale factor of RSTU to VWXY is 14:3. What is the scale factor of VWXY to RSTU?

Answers

The scale factor of VWXY to RSTU is 3 : 14.

What is ratio?

Ratio basically compares quantities, that means it show value of one quantity with respect to other quantity.

If a and b are two values, their ratio will be a:b,

Given that,

The scale factor of RSTU to VWXY is 14 : 3.

To find the scale factor of VWXY to RSTU,

Reverse the ratio,

Scale factor of RSTU to VWXY = 1 / scale factor of RSTU to VWXY

= 1 / 14 : 3

= 3 : 14.

The scale factor of VWXY to RSTU is 3:14.

To know more about Ratio on:

brainly.com/question/23724140

#SPJ2

3: 14

If you reverse the order of the naming of the two similar polygons, then you reverse the order of the scale factor.

If x is a negative number, which of the following could equal the absolute value of x? Select all that apply.A. -2
B. 2
C. 4
D. 6

Answers

The absolute value of a number is its distance from zero. There can not be a negative distance from zero. Therefore, all absolute values are positive, no matter if the value inside them is positive or negative. So, B, C, and D can each be the absolute value of some number x, because they are all positive.

Hope this helps! :)

the answer to your question is B, C, and D.

What is -9/20 as a decimal and as a percent?

Answers

Decimal: -0.45 percent:-45%

To find out what a fraction as a decimal would be, you simply need to divide the numerator by the denominator.

$(-9)/(10) = -9/10=-0.9$

Now to find the percent.
To find a percentage based off of a decimal, we can either multiply the decimal by 100, or (my personal shortcut) just shift the decimal point over two places to the right.

-0.9 = -90%

which is all we need to know.

$(-9)/(10)$ written as a decimal and a percent is -0.9 and -90% respectively.
Hope that helped! =)

An inlet pipe on a swimming pool can be used to fill the pool in 40 hours. The drain pipe can be used to empty the pool in 45 hours. If the pool is 14 filled and then the inlet pipe and drain pipe are opened, how many more hours would it take to fill the pool? Round your answer to two decimal places, if needed.

Answers

Answer:

It would take 90 hours to fill the pool.

Step-by-step explanation:

There is a mistake in the question so it is corrected below:

An inlet pipe on a swimming pool can be used to fill the pool in 40 hours. The drain pipe can be used to empty the pool in 45 hours. If the pool is 1/4 filled and then the inlet pipe and drain pipe are opened, how many more hours would it take to fill the pool?

Now, to find the hours would it take to fill the 1/4 pool.

Let the hours it take to fill the $(1)/(4)$ pool be $h.$