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Lelu [443]
3 years ago
9

Change to standard form. Please help, ty! Will mark brainliest!

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
7 0

Step-by-step explanation:

6. 7x + 7y = -11

7. -1x + 8y = 12

8. 9x + 11y = -7

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Help me plz I’ll give brainlist plz!!!!!!!!!!!
marishachu [46]

Answer:

answer is 10/3 thats the answer

5 0
2 years ago
You are starting a savings account for college. You put $1,000 in as your starting balance. You earn simple interest at 10% ever
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7 0
2 years ago
The ratio of two complementary angles is 5 to 1. what are the angles?
densk [106]
Call x and y those angles. If they are complementary, then their sum equals 90°:

x + y = 90°

y = 90° - x

The ratio of them is 5 to 1. So,

x/y = 5/1

x/(90° - x) = 5/1

x = 5 * (90° - x)

x = 450° - 5x

x + 5x = 450°

6x = 450°

x = 450°/6

x = 75°

The measure of the other angle is

y = 90° - 75°

y = 15°

The angles are 75° and 15°.

I hope it helps. =)
6 0
3 years ago
What is the answer to this question<br> Possible Answers <br> A.4.5<br> B.5.4<br> C.9.1<br> D10.9
vova2212 [387]
The answer is B. 5.4
7 0
3 years ago
Evaluate $\dfrac{2\sqrt{72}}{\sqrt{8}+\sqrt{2}}$.
Pavlova-9 [17]
<h3>Answer:  4</h3>

========================================================

Work Shown:

\frac{2\sqrt{72}}{\sqrt{8}+\sqrt{2}}\\\\\frac{2\sqrt{36*2}}{\sqrt{4*2}+\sqrt{2}}\\\\\frac{2\sqrt{36}*\sqrt{2}}{\sqrt{4}*\sqrt{2}+\sqrt{2}}\\\\\frac{2*6*\sqrt{2}}{2*\sqrt{2}+\sqrt{2}}\\\\\frac{12\sqrt{2}}{2\sqrt{2}+\sqrt{2}}\\\\\frac{12\sqrt{2}}{3\sqrt{2}}\\\\\frac{12}{3}\\\\4

Note in step 2, I factored each number in the square root to pull out the largest perfect square factor. From there, I used the rule that \sqrt{A*B} = \sqrt{A}*\sqrt{B} to break up the roots.

8 0
2 years ago
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