Answer:
Step-by-step explanation:
First start by finding the values of the numbers being multiplied together.
5^-2 = 25
This equals a positive 25 because when ever you multiply a negative by a negative it always equals a positive number. -5 x -5 = 25
= 2
This is asking what x what x what equals eight. Remembering that the square root of 4 is 2. We can determine that since 4 x 2 = 8 the cube root of 8 is 2.
2 x 2 x 2 = 8 and 8 divided by 2 divided by 2 = 2
So now solve the equation we have now. 25 x 2 =?
25 x 2 = 50
And 50 is our answer.
Answer:
2x + 3y = 4 =
−3/2
y+2
-2x + 5y = 60 =
5/2
y−30
Step-by-step explanation:
Answer:
<h2>c = -20</h2>
Step-by-step explanation:
just cross multiply, then simplify
8 = -2/5c
8(5) = -2c
c = 40/-2
c = -20