Answer:
5√202
Step-by-step explanation:
By Pythagoras theorem,
x^2 = 45^2 + 55^2
= 2025 + 3025
x^2 = 5050
x = 5√202
b = 43
Since 43 is congruent to b
63°
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hope it helps...
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z=10
10-5z=-4z
10=-4z+5z
10=z
i think it's c.
sorry if this is wrong
