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3 years ago

If the value of "y" varies directly with "X" and y = -8 when x = 20, find "y" if x = -4.

Mathematics

1 answer:

natka813 [3]3 years ago

5 0

Answer:

y = 10 when x is -4

will be the correct answer

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Simplify the square root of 2 multiplied by the square root of 18

zimovet [89]

The answer is 9 for sure

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3 years ago

What is the length of the line segment whose endpoints are A(-1,9) and B(7,4) in the simplest radical form?

monitta

length : $\sf \sqrt{89}$

Explanation:

use the distance formula : $\sf \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

using the formula:

$\sf \rightarrow \sf \sf \sqrt{(7--1)^2+(4-9)^2}$

$\sf \rightarrow \sf \sf \sqrt{(8)^2+(-5)^2}$

$\sf \rightarrow \sf \sf \sqrt{64+25}$

$\sf \rightarrow \sf \sf \sqrt{89}$

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2 years ago

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How do you do to find the percent of something?

patriot [66]

Divide the numerator by the denominator, and then multiply by 100 :)

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3 years ago

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Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.

Aleonysh [2.5K]

First, I would multiply 17cm by 22cm to get 374, which is the area of the rectangle. Then to find the area of the triangle, I would multiple 12cm by 19cm and the divide that by half to get 114. I would then add 374+114 to get 488cm as your answer.

6 0

3 years ago

If f(x)=2x^2+5√(x-2), complete the following statement:<br><br> f(3) = _____

dsp73

Given:
$f(x) = 2x^{2} +5 \sqrt{x-2}$

Asked:
f(3)

Solution:
Subtitute x with 3 in the function
$f(x) = 2x^{2} +5 \sqrt{x-2}$
$f(3) = 2(3)^{2} +5 \sqrt{3-2}$

Then simplify to find the value of f(3)
$f(x) = 2(9) +5 \sqrt{1}$
$f(x) = 18 +5$
$f(x) = 23$

The final answer is 23

5 0

4 years ago