travisvb
28.08.2020 •
Mathematics
Find the value of x.
A.48
B.56
C.68
D.76
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Ответ:
A
Step-by-step explanation:
The secant- tangent angle 78° is half the difference of the intercepted arcs
204 - x = 156 ( subtract 204 from both sides )
- x = - 48 ( multiply both sides by - 1 )
x = 48
Ответ:
This is y = 0.5 x + 2.5 in slope intercept form so its slope = 0.5
Slope of the line perpendicular to it = -1 / 0.5 = -2
it passes through (2 , 1) so we have
y- 1 = -2(x - 2)
y = -2x + 4 + 1
The answer is y = -2x + 5