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3 years ago

Solve 5x-9y=13 for y.

Mathematics

1 answer:

scoundrel [369]3 years ago

3 0

Answer:

$y = \frac{5x - 13}{9}$

Step-by-step explanation:

$5x - 9y = 13 \\ 5x - 13 = 9y \\ \frac{5x - 13}{9} = \frac{9y}{9} \\ y = \frac{5x - 13}{9}$

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Simplify 81^5=3^w and find w

Allisa [31]

Answer:

$w = 20$

Step-by-step explanation:

<u>Step 1: Find common bases</u>

$81^5 = 3^w$

$81$ → $3 * 3 * 3 * 3$ → $3^4$

Therefore, $81 = 3^4$

$81^5$ → $3^(^4^)^*^5$ → $3^2^0$

So... $3^2^0 = 3^w$

Since same base now, we can evaluate the exponents by themselves.

$20 = w$

Answer: $w = 20$

8 0

3 years ago

1. Solve for x.<br> (3x + 23)

Greeley [361]

Step-by-step explanation:

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3 years ago

A bird flies down 0 feet and then up 55 feet.

sveticcg [70]

Answer:

ok?

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Yet again I still get confused

ryzh [129]

The left side is a half circle.
The area of a circle is PI x r^2

The diameter of the circle would be the height of the rectangle, given as 10 feet.
The radius is 1/2 the diameter, so 5 feet.

The area of half the circle is (3.14 x 5^2) / 2 = 39.25 square feet.

The area of the rectangle is 20 x 10 = 200 square feet.

Total area = 200 + 39.25 = 239.25 square feet.

6 0

3 years ago

Divide. Round your answer to the nearest tenth.

nika2105 [10]

The answer to your question is. 103.2

3 0

3 years ago