Step-by-step explanation:
14 -28n
or
-28n +14
hope this helps
Answer:
B
Step-by-step explanation:
Trust me I got it right and you should too
Answer:
500 cm³
Step-by-step explanation:
Using the given values in the given formula, we find the volume to be ...

The volume of the sphere is about 500 cubic centimeters.
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<em>Additional comment</em>
The actual value of pi would add about 4.72% to this figure, bringing the estimate to about 523.6 cm³.
Answer:
choice 4) 4.5
Step-by-step explanation:
x² = 7.5² + 4² = 56.25 + 16 = 72.25
x = √72.25 = 8.5
8.5 - 4 = 4.5
Answer:
x = -3/2
Step-by-step explanation:
3 / (x − 1) − 1 / (x² − 1) = 5 / (x − 1)
Subtract 3 / (x − 1) from both sides:
-1 / (x² − 1) = 5 / (x − 1) − 3 / (x − 1)
The denominators are the same, so subtract:
-1 / (x² − 1) = 2 / (x − 1)
Cross multiply:
-1 (x − 1) = 2 (x² − 1)
Simplify and solve:
-x + 1 = 2x² − 2
0 = 2x² + x − 3
0 = (x − 1) (2x + 3)
x = -3/2 or 1
x can't be 1 (can't divide by 0), so x = -3/2.