(-4)^-6*(-4)^7 = (-4)^1 = -4
answer a. -4
Answer:
sqrt(3)
Step-by-step explanation:
Each side (donated by small letter ) is opposite to its angle for example :
Side c is opposite to angle C which is 90
side b is opposite to angle B which is 60
Answer:

Step-by-step explanation:
bisects
and
.


Solve for m.
Subtract 3m from both sides.

Divide both sides by 3.

Calculate
.


Put m = 7.



P(picking one defective) = 3/10
P(picking a 2nd defective) = 2/9
P(1 and 2 defective) = 3/10 x 2/9 = 6/90 = 0.066
Second method using combination:
³C₂ / ¹⁰C₂ = 1/15 = 0.066