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aalyn [17]
2 years ago
12

The measure of angle A in ABC is twice the measure of angle B and the measure of angle C is 20° less than the measure

Mathematics
1 answer:
diamong [38]2 years ago
7 0

Answer:

m∡A = 100°

m∡B = 50°

m∡C = 30°

Step-by-step explanation:

let 'x' = m∡B;  50°

let '2x' = m∡A;   100°

let 'x-20' = m∡C;   30°

x + 2x + x - 20 = 180

4x - 20 = 180

4x = 200

x = 50

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Answer:

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Keep the first number sign, change the next sign, and the next sign.

6 0
2 years ago
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What is the leading coefficient of a third degree function that has an output of 221 when x=2, and has zeros of −15, 3i, and −3i
Vinil7 [7]

Answer:

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Step-by-step explanation:

The function with the given zeros will factor as ...

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_____

<em>Additional comment</em>

As you know, a function with zero x=p has a factor of (x -p). The given zeros mean the function has factors (x -(-15)), (x -3i). and (x -(-3i)). The product of the last two factors is the difference of squares: (x^2 -(3i)^2) = (x^2 -(-9)) = (x^2 +9). This is how we arrived at the factorization shown above.

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