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3 years ago

Two numbers are in the ratio 1:2. If 7 is to be added to both, then ratio changes to 3:5, find the numbers

Mathematics

1 answer:

lana [24]3 years ago

3 0

Let numbers be x and 2x

ATQ

$\\ \rm\longmapsto \dfrac{x+7}{2x+7}=\dfrac{3}{5}$

$\\ \rm\longmapsto 5(x+7)=3(2x+7)$

$\\ \rm\longmapsto 5x+35=6x+21$

$\\ \rm\longmapsto 6x-5x=35-21$

$\\ \rm\longmapsto x=14$

2x=2(14)=28years

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viva [34]

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Step-by-step explanation:

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4 years ago

Angle map and angle mac are linear pairs ,m of angle map=7x-13 and m of angle Mac =3x+13 how do u determine m of angle map

FromTheMoon [43]

Answer : ∠map = $7\times17-13=119-13=106\textdegree$

∠mac = $3\times17+13=51+13=64\textdegree$

Explanation:

Since we have given that

∠map and ∠mac are linear pairs

So their sum wiil be supplementary

i.e. ∠map+∠mac= $180\textdegree$ ;

$7x-3+3x+13=180\textdegree\\10x+10=180\textdegree\\10x=180\textdegree-10\textdegree\\10x=170\textdegree\\x=\frac{170}{10}\\x=17\textdegree$

So, ∠map = $7\times17-13=119-13=106\textdegree$

and ∠mac = $3\times17+13=51+13=64\textdegree$

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SCORPION-xisa [38]

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Step-by-step explanation:

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omeli [17]

<h3>Answer:</h3>

See the attachment

<h3>Step-by-step explanation:</h3>

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