Mathematics: Solve the following equations. 20. x/4 + 10 = 3/4 21. 12 = |x + 8| 22. -3|x - 4| + 2 = -7 23. 16(x – 2) – (x – 3) = 29 24.5/6(2x – 8) = 45 25. f = 9/5c + 32 solve for c.

Solve the following equations. 20. x/4 + 10 = 3/4 - id204103423071912, HHHHHHHHHMMMMMMMMM

Ответ:

MannyBanko1350

06.01.2022

Mathematics

Start with

$\dfrac{x}{4} + 10 = \dfrac{3}{4}$

Multiply both sides by 4:

x+40=3

Subtract 40 from both sides:

x = -37

If the absolute value of something equals 12, then that something is either 12 or -12: the possibilities are

$x+8=12 \iff x=4$

$x+8=-12 \iff x=-20$

You can isolate the absolute value

$-3|x-4|+2=-7 \iff -3|x - 4|=-9 \iff |x - 4|=3$

And proceed as before.

Distribute the 16:

$16x-32-x+3=29 \iff 15x-29=29 \iff 15x=58 \iff x = \dfrac{58}{15}$

Multiply both sides by 6/5:

$2x-8=54 \iff 2x=62 \iff x=31$

Start with

$F=\dfrac{9}{5}C+32$

Subtract 32 from both sides

$F-32=\dfrac{9}{5}C$

Multiply both sides by 5/9

$\dfrac{5}{9}(F-32)=C$

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Ответ:

connermichaela

01.10.2020

Mathematics

.0625 or A

Step-by-step explanation:

You have to work out the mean. (The simple average of those numbers) Then for each number subtract the Mean and square the result. Then work out the average of those squared differences.

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Solve the following equations.
20. x/4 + 10 = 3/4
21. 12 = |x + 8|
22. -3|x - 4| + 2 = -7
23. 16(x – 2) – (x – 3) = 29
24.5/6(2x – 8) = 45
25. f = 9/5c + 32 solve for c.

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