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genyjoannerubiera
12.12.2020 •
Mathematics
Uh i’m so confused can someone help me asap pls and ty
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Ответ:
∠REA = 53°
Step-by-step explanation:
Since ∠BEA = 71°, set both angle measures equal to that.
2x + 5x + 8 = 71
Solve for x. First, combine like terms:
7x + 8 = 71
Then, subtract 8 from both sides:
7x = 63
Divide both sides by 7:
x = 9
Now, plug x into ∠REA:
∠REA = 5x + 8
∠REA = 5(9) + 8
∠REA = 45 + 8
∠REA = 53°
Hope this helps!
Ответ:
Step-by-step explanation:
Jolene speed =40 mph
Samantha speed=50mph
let x be the time Samantha needs to be ahead of Jolene
40x+25=50x
25=50x-40x
25=10x
x=2.5 hours