Question 4 In a x-y coordinate plane, which of the following
point is vertically above the point(9,-2)?
A. (-3,3)
B. (3,-9)
C. (-9,9)
D. (9,-9)

the answer is (-8,-5)

step-by-step explanation:

the endpoint to midpoint is half the length. the length is (-2,-1) so when you are at the midpoint just add it to it to find your answer -6+(-2)= -8 and -4+(-1)=-5 so (-8,-5)

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)

just sum

10 + 10 = 20

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7