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Fofino [41]
3 years ago
12

Pls help due ASAP zhudhdngdhdhhe

Mathematics
2 answers:
marysya [2.9K]3 years ago
8 0

Answer:

x=21.25

Step-by-step explanation:

triangle = 180 degree angle

knowns:

75 degrees and two opposing sides with same length have same angles

so:

180-75= 105

2(2x+10)=105

4x+20=105

4x=105-20

4x=85

x=85/4

x=21.25

Colt1911 [192]3 years ago
6 0

Answer:

C. 21.25 ( i'm assuming that C. says 21.25)

Step-by-step explanation:

Since it's an isosceles triangle, the two bottom angles are equal to one another. So 180 - 75 = 105. 105 ÷ 2 = 52.5

2x + 10 = 52.5

2x = 42.5

x = 21.25

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