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Nataliya [291]
3 years ago
12

Find the measure of the indicated aces and angles

Mathematics
1 answer:
Serggg [28]3 years ago
4 0

Answer:

a=21

b=69

c=42

d=138

Step-by-step explanation:

c is supplementary to d (which is 138), so c=180-138= 42.

angle b is on the edge of the central angle 138, so b is 1/2, therefore, b=69.

angle a is complementary to angle b because any triangle that includes the diameter is a right angle, so angle a=90-69=21.

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faltersainse [42]
B, because when you add 90+80 you get 170 and 170/2 = 85
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lozanna [386]

Answer:

-9x² + 5x + 11

Step-by-step explanation:

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-9x² + 5x + 11

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3 years ago
PLEASE HELP!!!! <br> Solve the system of equation. Write the solution as a coordinate point.
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We can just substitute y = 4x+1 in the second equation.

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5 0
2 years ago
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Semenov [28]

Answer:

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To solve this, we're gonna get rid of the y's with substitution

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Answer:

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