Answer:
n=31.5
Step-by-step explanation:
The given question is:
Cross multiply to get:
Expand the parenthesis:
Group similar terms:
Combine the like terms
Divide both sides by 4
n=31.5
Answer:
Step-by-step explanation:
The formula of a volume of a cube:
<em>a</em> - edge
We have
Convert to the improper fraction:
Substitute to the formula of a volume:
Answer:
-1 < x < 7 (Line under < for both)
Answer:
a = -1/4
Step-by-step explanation:
Substitute the given solution into the equations
2x + y = 8
2(2a) + (9) = 8
4a + 9 = 8
Rearrange to get a alone
4a = 8 - 9
4a = -1
a = -1/4
2a = 2(-1/4) = -1/2
Solution = (-1/2, 9)