Answer:
7.35%
Step-by-step explanation:
μ = 1380
σ = 80
n = 15
P(x>1410)
= (1410-1380)/((80)/(sqrt(15)))
= 1.4524
P(z>1.4524) = 0.4265 (from the graph)
P(z>1.4524) = 0.5 - 0.4265 = 0.0735
Dear Sam
Answer to query is provided below:
Simplifying and Dividing terms you will get (3v +24)/(v+4)
Proper explanation is attached in the image
Therefore, the answer is b < 7.
x=3, y=4. (3, 4).
x+y=7
x+2y=11
--------------
-x-y=-7
y=4
x+4=7
x=7-4
x=3