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3 years ago

15

A car travelled 216km at an average speed of 48km/h.On the return journey the average speed increased to 72km/h.Calculate the av

erage speed,in km/h for the whole journey

1 answer:

mel-nik [20]3 years ago

3 0

Answer:120km/hr

Step-by-step explanation:

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7(x-3)+6=5x-9 please solve the equation fully

TiliK225 [7]

Answer:

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Step-by-step explanation:

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2 years ago

Solve for x over the complex numbers.

Grace [21]

Answer:

Step-by-step explanation:

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3 years ago

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Nesterboy [21]

Answer:

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2 years ago

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andreyandreev [35.5K]

3x + 7 = -x - 1
3x + 7 + = -1
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4x = -8
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3 years ago

How many cubes with side lengths of 1/3 does it take to fill the prism?

Ugo [173]

Answer:

180 cubes

Step-by-step explanation:

little cubes:

$v=(\frac{1}{3} )^{3} =\frac{1}{27}$

The prism:

$v=(\frac{5}{3})(\frac{4}{3} )(2)=\frac{40}{9} =\frac{20}{3}$

the number of cubes that fill the prism:

$cubes=\frac{\frac{20}{3} }{\frac{1}{27} } =\frac{(20)(27)}{(3)(1)}= \frac{540}{3} =180$

Hope this helps

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2 years ago