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DedPeter [7]
2 years ago
14

A mixture of concrete is made up of sand and cement in the ratio of 5:3.How many cubic centimeters of sand is needed to make 160

cubic centimeters of concrete mix?
Mathematics
1 answer:
bazaltina [42]2 years ago
3 0

Answer: 100\ cm^3

Step-by-step explanation:

Given

The ratio of mixture of sand and cement is 5:3

If the total volume of mixture is 160\ cm^3

Suppose there is 5x and 3x cubic centimeter of sand and cement respectively i.e.

\Rightarrow 5x+3x=160\\\Rightarrow 8x=160\\\Rightarrow x=20\ cm^3

Sand 5x=5\times 20=100\ cm^3

So, there is 100\ cm^3 of sand in the mixture

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the va's are where x is undefined, or where the denomenator is zero
first simplify if applicable
cannot simplify

set denom to zero
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2x=5
x=2.5

the vertical assemtote is vertical so it is x=2.5 or 5/2

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olga_2 [115]

Multiplication was invented to reduce the work involved in repeated addition.

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Some questions must be answered before we can give a definite answer.

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2. Are passengers on the return trips (<em>from</em> the island) counted?

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4 0
2 years ago
Factor the perfect square trinomial y2 + 20y + 100.
klemol [59]

Step-by-step explanation:

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Is this a joke question?
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