Answer:
12.1/1
Step-by-step explanation:
Answer= 11. Two negatives equals a positive so you add them together.
Answer:
A batch of 20 semiconductor chips is inspected by choosing a sample of 3 chips. Assume 10 of the chips do not conform to customer requirements.
a) Number of different samples = 20C3 =
=1140
b) 2 good and one bad chip
Number of samples = 10C2 * 10C1 = 45 * 10 =450
c) 2 good 1 bad + 1 good 2 bad + 3 bad
Number of samples = 10C2 * 10C1 + 10C1 * 10C2 + 10C3
= 
A=18
Explanation:multiply both sides by 3 to get rid of the fraction so u are left with a=18
For all points that lie on the y-axis, the x-coordinate is zero.