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Dmitriy789 [7]
3 years ago
5

For ΔABC, ∠A = 8x - 10, ∠B = 10x - 40, and ∠C = 3x + 20. If ΔABC undergoes a dilation by a scale factor of 1 2 to create ΔA'B'C'

with ∠A' = 6x + 10, ∠B' = 70 - x, and ∠C' = 10x 2 , which confirms that ΔABC∼ΔA'B'C by the AA criterion? A) ∠A = ∠A' = 70° and ∠B = ∠B' = 60° B) ∠A = ∠A' = 35° and ∠B = ∠B' = 30° C) ∠B = ∠B' = 54° and ∠C = ∠C' = 40° D) ∠A = ∠A' = 76° and ∠C = ∠C' = 53°
Mathematics
1 answer:
STALIN [3.7K]3 years ago
3 0
If the triangles ABC and A'B'C' are similar, then 
angle A = angle A'
8x-10 = 6x+10
8x-6x = 10+10
2x = 20
x = 20/2
x = 10

So angle A is
angle A = 8x-10
angle A = 8*10-10
angle A = 80-10
angle A = 70
making that the measure of angle A' as well

This is why the answer is choice A
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4 0
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How many square feet of outdoor carpet will we need for this hole
Fed [463]

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40 ft²

Step-by-step explanation:

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✅area of outdoor carpet = 4 + 3 + 33 = 40 ft²

4 0
3 years ago
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sergiy2304 [10]
Hello :
if : a <span>≡ 5 ( mod 7) ....(1)
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