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3 years ago

Mastery Test What is the y-value when x equals -16? y = -200 - 12(x)

Mathematics

1 answer:

nexus9112 [7]3 years ago

4 0

You have to multiply 12 by -16 =-192. When you subtract-200 with -192 you get -8

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I need help on this question i uploaded it but no one has seen it

Margaret [11]

hi ! so the answers are below ...

<h3>1. we need to add both angles to find angle QST</h3><h3> <u>5</u><u>2</u><u> </u><u>+</u><u> </u><u>4</u><u>7</u></h3><h3> <u>=</u><u> </u><u>9</u><u>9</u></h3>

<h3>2. since the angles are on a straight line, to find the angle NPM we need to subtract the given angle with 180⁰ since the total of a straight line is 180⁰ ( hope you understand )</h3>

anyways...

hope that helped and let me know if you have any more questions :)

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3 years ago

Which of the following methods of sampling is an example of a stratified random sample?

Juliette [100K]

Answer: D

Step-by-step explanation:

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3 years ago

How many solutions does this equation have?<br> (15x + 21) / 3<br> = 5x + 7

Lesechka [4]

Answer:

3*(5*x-7)-(15*x-21)=0

Step-by-step explanation:

3 • (5x - 7) - (15x - 21) = 0

Step 2 :

Equation at the end of step 2 :

0 = 0

Step 3 :

Equations which are always true :

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3 years ago

Solve 7log9(x + 8) = 7

Bumek [7]

Remember
$log_a(b)=c$ translates to $a^c=b$

alrighty

so we've got
$7log_9(x+8)=7$
divide both sides by 7
$log_9(x+8)=1$
translate
$9^1=x+8$
9=x+8
minus 8 both sides
1=x
x=1

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3 years ago

Use angle addition formula to find the expression for cos(a+b). Use the same formula to

Sav [38]

Answer:

we have

Cos (a+b)=Cos aCosb-SinaSinb

for

Cos (a+a)=Cos aCosa-SinaSina=<u>Cos²a-Sin²a</u>

is a required answer.

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3 years ago

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