balka75
03.02.2021 •
Mathematics
If ANQZ - ACBK, find BK. *
O BK = 39
O BK = 16
O BK = 65
O BK = 27
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Ответ:
9514 1404 393
(c) BK = 65
Step-by-step explanation:
Corresponding sides are proportional in similar triangles, so ...
ZT/ZQ = KF/KB
27/(2x +7) = 45/(4x+1)
27(4x+1) = 45(2x +7) . . . cross-multiply
3(4x +1) = 5(2x +7) . . . . divide by 9
12x +3 = 10x +35 . . . . . eliminate parentheses
2x = 32 . . . . . . . . . . . . . subtract 10x+3
x = 16 . . . . . divide by 2
Then the length of BK is ...
BK = 4x+1 = 4·16 +1
BK = 65
Ответ:
Step-by-step explanation:
Area of triangle=sume of all sides.
=A+B+C
=1.75+1.45+1.95
=5.15