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love history [14]

2 years ago

6

Solve for r. 4r – 39 > -43 AND 8x + 31 < 23

1 answer:

Vsevolod [243]2 years ago

7 0

Answer:

$4r-39>-43$

$4r-39+39>-43+39$

$4r>-4$

$\frac{4r}{4}>\frac{-4}{4}$

$\boxed{r>-1}$

______________________

$8x+31$

$8x+31-31$

$8x$

$\frac{8x}{8}$

$\boxed{x$

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<em><u>Solution:</u></em>

Given that, village having a population of 4000, requires 150 litres of water per head per day

<em><u>Let us first find the volume of tank</u></em>

The tank measuring 20m x 15m x 6m

Length = 20 m

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