5y-x= -5 7y-x= -23
x=5y+5
7y-(5y+5)= -23
7y-5y-5= -23
2y= -23+5
2y= -18
y= -9
x= 5y+5
x= (5*-9)+5
x= -45+5
x= -40
Answer:
0.4735
Step-by-step explanation:
10 defective, 62 not defective
P(good) = 62/72 = 31/36
All 5 good:
(31/36)⁵ = 0.4734738145
B. x = 2.77
3^x = 21
You first look for a base for 21 that is 3 to the power of something.
21 = 3^2.77
So 3^x = 2^2.77
They have the same base so
x= 2.77
please check the attachments for better explanation
