Answer: x=3
Explanation: just did it :) plz name me brainliest :)))
Answer:
8
Step-by-step explanation:
y = 2
z = 8
8y - z
= 8 ( 2 ) - 8
= 16 - 8
= 8
Answer:
Step-by-step explanation:
Here is the exact construction of √40 using Pythagorean 's theorem
Answer:
0.1469
Step-by-step explanation:
Given from the question;
Mean=8.4 hrs=μ
Standard deviation=1.8 hrs=δ
Sample size, n=40
Let x=8.7
z=(x-μ)÷(δ÷√n)
Find z(8.7)
z=(8.7-8.4)÷(1.8÷√40)
z={0.3×√40}÷1.8=1.05409
z=1.0541
Read from the standard normal probabilities table
P(z>1.0541)
=0.1459