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I need help, please! I need help really badly.

I need help, please! I need help really badly.-example-1
User David Pointer
by
2.7k points

1 Answer

10 votes
10 votes
Answers are

Angle A = 46

Angle B = 154

Step by step

Angle A is a corresponding angle with 4u + 26, so it is the same.
Angle A is a supplementary angle with
22u + 24, so their sum is 180 degrees on the straight angle. See the red angles on the attachment.

We can substitute A with 4u + 26 and solve

4u + 26 + 22u + 24 = 180
Combine

26u + 50 = 180
Subtract 50 from both sides to isolate variable

26u + 50 - 50 = 180 -50

26u = 130

Divide both sides by 26 to solve

26/26 u = 130/26

u = 5

A = 4u + 26
Substitute 5 for u

A = (4) (5) + 26

A = 20 + 26

A = 46

Angle B

We know the two blue angles on the attachment are corresponding angles so they are the same (7w + 5)
We also know angle (w + 23) is a vertical angle to (7w + 5)

We can solve

w + 23 = 7w + 5

Subtract w from both sides to isolate w

w - w + 23 = 7w -w + 5

23 = 6w + 5

Subtract 5 from both sides to isolate constant

23 - 5 = 6w +5 - 5

18 = 6w

Divide both sides by 6 to solve for w

18/6 = 6/6 w

w = 3

Now we can find either angle value

w + 23 = 7w + 5

sub 3 for w

(3) + 23 + (7)(3) + 5

26 = 26

Both vertical angles are 26

Now we know that the straight angle sum will equal 180, so

26 + B = 180

subtract 26 from both sides to solve

26 - 26 + B = 180 - 26

B = 154






I need help, please! I need help really badly.-example-1
User Simo Erkinheimo
by
2.5k points
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