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2 years ago

15

Solve each equation for y:

2 answers:

strojnjashka [21]2 years ago

4 0

Answer:

Solve each equation for y:y^2 -1=80(y-4) divided by 4=110-63 divided by y=1

Step-by-step explanation:

sammy [17]2 years ago

3 0

Step-by-step explanation:

${y}^{2} - 1 = 80$

${y}^{2} = 81$

$y = ±9$

$\frac{y - 4}{4} = 1$

$y - 4 = 4$

$y = 8$

$\frac{10 - 63}{y} = 1$

$10 - 63 = y$

$- 53 = y$

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zhenek [66]

Answer:

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Step-by-step explanation:

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3 years ago

Does a negative divided by a negative make a positive

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2 years ago

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If f(x)=(1/8)(8^x) what is f(3)?<br> A. 1/512<br> B. 1/64<br> C. 512<br> D. 64

cestrela7 [59]

Hi there!

Let's solve this problem step by step!
$f(x) = \frac{1}{8} (8 {}^{x})$

To find f(3) we must substitute x = 3 into the formula.
$f(3) = \frac{1}{8} (8 {}^{3} )$

Now we use PEMDAS (Parenthesis, exponents, multiply, divide, add, subtract) to find our answer.

Work out the exponents inside the parenthesis first.
$f(3) = \frac{1}{8} \times 512$

And finally multiply.
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Hence, the answer is D. 64.
~ Hope this helps you!

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2 years ago

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3 years ago

Use elimination to solve each system if equation 3x+2y=0and x-5y=17

kotykmax [81]

Answer:

$y = -3$

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Step-by-step explanation:

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to use the elimination you have to make one of the numbers same

so

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New system of equation

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so we know the y value so now you could find the x value take one equation

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you could try it with both of the equations

$3x + 2y = 0$

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$x=2$

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3 years ago