cameronkoberste
28.11.2020 •
Mathematics
How much is the arc of a circle if the angle is 70°
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Ответ:
We also know that the sum of the measures of arcs AD, AB, CD, and BC must be 360 degrees, because there are 360 degrees in a full circle. Because AD = 2AB, we can substitute 2AB for AD. This means the measure of arc AB is 70 degrees, and the measure of arc AD is 2(70) = 140 degrees.
Step-by-step explanation:
hope that helps u
Ответ:
f(x) = 2*x^2 - 6
f(x) = 2*(x)^2 - 6
f(-1) = 2*(-1)^2 - 6 ... note how each x is replaced with -1
f(-1) = 2*(1) - 6
f(-1) = 2 - 6
f(-1) = -4
Answer is choice B) -4