<h3>
Answer:</h3>
<h3>
Step-by-step explanation:</h3>
If the trapezoid is isosceles, angles A and C are supplementary, so ...
... (4x+4) +(7x+11) = 180
... 11x +15 = 180 . . . . . . collect terms
... 11x = 165 . . . . . . . . . subtract 15
... x = 15 . . . . . . . . . . . . divide by the coefficient of x
And angles C and E are congruent.
... 4·15 +4 = 21y +1
... 63 = 21y . . . . . subtract 1
... 3 = y . . . . . . . . divide by the coefficient of y
Answer:
See image below:) :)
Step-by-step explanation:
Answer:
0 to StartFraction pi Over 2
Step-by-step explanation:
we know that
If the arc on a circle measures 85 degrees, then the measure of the central angle is also 85 degrees too
so
The central angle in degrees is within the range ![(0,90^o)](https://tex.z-dn.net/?f=%280%2C90%5Eo%29)
Convert to radians
Remember that
![\frac{\pi}{2}\ radians=90^o](https://tex.z-dn.net/?f=%5Cfrac%7B%5Cpi%7D%7B2%7D%5C%20radians%3D90%5Eo)
therefore
the range in radians is ![(0,\frac{\pi}{2})](https://tex.z-dn.net/?f=%280%2C%5Cfrac%7B%5Cpi%7D%7B2%7D%29)
0 to StartFraction pi Over 2
Answer:
x=3
Step-by-step explanation:
Vertical angles are equal so
<A = <B
7x+2 = 4x+11
Subtract 4x from each side
7x+2-4x = 4x+11-4x
3x+2 =11
Subtract 2 from each side
3x+2-2 = 11-2
3x = 9
Divide by 3
3x/3 = 9/3
x=3