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12345 [234]
2 years ago
12

9x+9y=9. Solve for Y

Mathematics
2 answers:
kondor19780726 [428]2 years ago
8 0

Answer:

y = 1 - x

Step-by-step explanation:

9x + 9y = 9

First, take 9x to the right side.

9y = 9 - 9x

9y = 9 ( 1 - x )

Divide both sides by 9.

y = 1 - x

Alja [10]2 years ago
5 0

Answer:

y = 1 - x

Step-by-step explanation:

9x + 9y = 9 ( divide through by 9 )

x + y = 1 ( subtract x from both sides )

y = 1 - x

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The sum of 35 and one fifth part of itself is added to the sum of one seventh of 11 and 8​
9966 [12]

Answer:

313/7

Step-by-step explanation:

Here, we are interested in turning the wordings of the statement to numeric values.

We take it one at a time.

Sum of 35 and 1/5(35) = 35 + 7 = 42

This is added to 1/7(11 + 8)

= 1/7(19) = 19/7

So we have;

42 + 19/7 = (294 + 19)/7 = 313/7

8 0
3 years ago
Suppose you average 82 on your first 7 test. What must you score on the eighth test to raise your average to 84?
natima [27]

so hmmm on average on the last 7 test, you get 82, so hmmm we could say that on each of the 7 tests you got 82, so you got 82, 7 times.

now, let's say in the 8th test, you get a grade of "g", now, if we were to get an average of all 8 tests, that means the average will simply be (82*7) + "g", and we know that's 84, so

\cfrac{(\stackrel{\textit{sum of all first seven tests}}{82+82+82+82+82+82+82})~~ + ~~g}{8}~~ = ~~84\implies \cfrac{(82\cdot 7)~~ + ~~g}{8}~~ = ~~84 \\\\\\ \cfrac{574+g}{8}=84\implies 574+g=672\implies g=672-574\implies g=98

7 0
1 year ago
Read 2 more answers
Please help me
tensa zangetsu [6.8K]

Answer:

Draw a picture and you'll see a right triangle with sides = 7 and 24 and hypotenuse = r (the cricle's radius).  By the Pythagorean Theorem:

 

r2 = 72 + 242

 

Area = pi·r2

Step-by-step explanation:

4 0
2 years ago
Find M<br> A. 17<br> B. 16<br> C. 18<br> D. 20
mixas84 [53]

Answer:

A. 17

Step-by-step explanation:

using the cosine rule (also see attached for reference):

AB² = BC² + AC² - 2·AC·BC cos C

2·AC·BC cos C = BC² + AC² - AB²

Given that AC = 18, AB = 12 and BC = 18, substituting these into the formula

2(18)(28) cos C = 28² + 18² - 12²

1008 cos C = 964

cos C = 964/1008

cos C = 0.9563

C = cos⁻¹ 0.9563

C = 16.99 ( = 17° rounded to nearest degree)

7 0
3 years ago
A ski resort has 3 lifts, each with access to 6 ski trails. Explain how you can find the number of possible outcomes when choosi
svetlana [45]
You could multiply 6 times 3 to get your answer. The answer would be 18

4 0
3 years ago
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