Mathematics: Can someone please help?

Can someone please help? - id9228280, kellysmith45

elenagarcia123

10.02.2022

110 degrees.

Step-by-step explanation:

Angle A + Angle B = 180 degrees.

Therefore, 5x+20+9x-92=180

When you solve you get 14x=252 or x=18

When you plug that into A you get 5(18)+20=110

Therefore, A=110 degrees

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IsabellaGracie

10.02.2022

The answer is in the explaination

Step-by-step explanation:

A + B = 180 degrees

14x - 72 = 180

14x = 108

x = 8

A = 5 times 8 plus 20

A = 60

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edjiejwi

16.03.2021

$\large\boxed{(3-2i)(3+2i)=13}$

Step-by-step explanation:

$(3-2i)(3+2i)\qquad\text{use}\ (a-b)(a+b)=a^2-b^2\\\\=3^2-(2i)^2=9-4i^2\qquad i=\sqrt{-1}\to i^2=-1\\\\=9-4(-1)=9+4=13$

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