What is the equation of a vertical line that has an x-intercept of ? 7? a. x = ? 7 b. x = 7 c. y = x + 7 d. y = x ? 7

d. 9

step-by-step explanation:

54/12 = 4.5

sf = 4.5

so x = 2 · 4.5 = 9

center= (-2,0)

radius= sqrt2/2

step-by-step explanation:

step-by-step explanation :

we know that

the measurement of the outer angle is the semi-difference of the arcs which comprises

in this problem

m< xzy is the outer angle

substitute the values

the measure of angle xoy is equal to

> by central angle

substitute the value