Answer:
x = 4
Step-by-step explanation:
Given
(x - 7) = - 2
Multiply both sides by 3 to clear the fraction
2(x - 7) = - 6 ← distribute left side
2x - 14 = - 6 ( add 14 to both sides )
2x = 8 ( divide both sides by 2 )
x = 4
You can say there are 3 groups and 6 people are in it how many people are they? which the answer is 18.
Answer:0.63
0.97
Step-by-step explanation:
Given
Probability to detect the flaw by first inspector is 0.9
Probability to detect the flaw by second inspector is 0.7
(a)Probability that both inspector find the flaw
![P=0.9\times 0.7=0.63](https://tex.z-dn.net/?f=P%3D0.9%5Ctimes%200.7%3D0.63)
(b)Probability of finding flaw by at least one inspector is
P=1-Probability of not detecting the flaw by both inspectors
![P=1-\left ( 1-0.9\right )\left ( 1-0.7\right )](https://tex.z-dn.net/?f=P%3D1-%5Cleft%20%28%201-0.9%5Cright%20%29%5Cleft%20%28%201-0.7%5Cright%20%29)
P=1-0.03=0.97