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4 years ago

2 and 1/7 :(15a)= 5/14 :(0.8)

Mathematics

1 answer:

murzikaleks [220]4 years ago

4 0

Answer:

<u>a = 0.32</u>

Explanation:

This question requires that you find the value of $a$ given that:

$2\frac{1}{7}:(15a)=(5/14)/(0.8)$

That is you have to solve the equation for a.

1. Rewrite the equation in form of fractions, convert the mixed number into an improper fraction, and convert the decimal number into fraction too.

$2\frac{1}{7}:(15a)=(5/14)/(0.8)\\ \\ \frac{2+\frac{1}{7} }{15a} =\frac{5/14}{8/10}\\ \\\frac{(14+1)/7}{15a} =\frac{5\times 10}{8\times 14}\\ \\ \frac{15}{7\times 15a} =\frac{50}{112}$

2. Cross multiply to leave a alone:

$a=15\times 112/(7\times 15\times 50)\\ \\a=1680/5250\\ \\a=0.32$

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ollegr [7]

Answer:

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Step-by-step explanation:

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First thing we are doing is find the lengths of AB, BC, and AC using the distance formula:

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where

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$d=\sqrt{64+64}$

$d=\sqrt{128}$

$d=11.31$

Next, now that we have our lengths, we can add them to find the perimeter of our triangle:

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$p=25.6$

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natka813 [3]

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