Mathematics: I need help on solving.

I need help on solving. - id14426140, roudjinapierre214

quan1579

24.09.2021

$x = - 1 \\ - 2 + 0.4y = 0.4 \\ 0.4y = 0.4 + 2 = 2.4 \\ y = 2.4 \div 0.4 = 6 \\ y = 1 \\ 2x + 0.4 = 0.4 \\ 2x = 0.4 - 0.4 = 0 \\ x = 0$

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seawu

24.09.2021

$2x + 0.4y = 0.4 \\ 2( - 1) + 0.4y = 0.4 \\ 0.4 y = 2.4 \\ y = \frac{2.4}{0.6} \\ \therefore \: y = 6 \\ 2x + 0.4(1) = 0.4 \\ \therefore \: x = 0$

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ezy53

09.06.2021

x=18, m∠1=140, m∠2=40

Step-by-step explanation:

m∠1 and m∠2 will equal up to 180

7x+14+2x+4=180

Combine like-terms

9x+18=180

Subtract 18 from both sides.

9x=162

Divide both sides by 9

x=18

Then plug in 18 for x in the angle measures

7(18)+14=140

2(18)+4=40

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