restinpeicejahseh
29.03.2021 •
Mathematics
20 POINTS pls answer asap
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Ответ:
Step-by-step explanation:
CD = ED --- (secant property)
so, ==>>
13x - 16 = 4x + 11
13x - 4x = 11 + 16
9x = 27
x = 27÷9
x = 3
side ED = 4x + 11 = 4×3 + 11
side ED = 23
side FE = 12
ΔFED = 90° (tangent secant property)
so
FE² + ED² = FD² ( by pythagoras theorm)
12² + 23² = FD²
144 + 529 = FD²
673 = FD²
√673 = FD
26 = FD
Ответ:
26
Step-by-step explanation:
Ответ:
312.5
Step-by-step explanation:
Since it is $250 plus 20 cents per poster, the equation is 0.20p+250. It is $1 per poster at store and you want to know when the cost is going to be the same so you set them equal to each other.
0.20p+250=p
250=0.80p
312.5=p