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1.Solve for h:A=3 pi radius h? 2.solve x:2x+9+8x=14? 3.Solve 4x-5=-17?

1 Answer

Feb 28, 2018

$h = \frac{A}{3 π r}$ $h=A/(3pir)$
$x = \frac{1}{2}$ $x=1/2$
$x = - 3$ $x=-3$

Explanation:

$A = 3 π r h$ $A=3pirh$
$h = \frac{A}{3 π r}$ $h=A/(3pir)$
As there are no other figures, we can only simplify and change the subject to solve for h.

2.
$2 x + 9 + 8 x = 14$ $2x+9+8x=14$

$10 x + 9 = 14$ $10x+9=14$

$10 x = 5$ $10x=5$

$x = \frac{1}{2}$ $x=1/2$

3.
$4 x - 5 = - 17$ $4x-5=-17$

$4 x = - 12$ $4x=-12$

$x = - 3$ $x=-3$

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