Answer:
division property of equality
Step-by-step explanation:
To go from 8x = 80 to x = 10 we divide each side by 10
The property that allows this is the division property of equality
Answer:
210
Step-by-step explanation:
because you use 13.% divided by the price
Answer:
2 1/4 i believe correct me if im wrong
Step-by-step explanation:
Assuming you mean (1/1+sin 0)+(1/1-sin 0), then we have to first remember that the sin of 0 is 0. The expression would now be (1/1+0)+(1/1-0), which is also just (1/1)+(1/1) or 1+1. This comes out to 2, so the expression can be evaluated as 2.
Answer: the z score is - 1.5
Step-by-step explanation:
Since the time required to finish a test is normally distributed, we would apply the formula for normal distribution which is expressed as
z = (x - µ)/σ
Where
x = time required to finish the test
µ = mean time
σ = standard deviation
From the information given,
µ = 60 minutes
σ = 10 minutes
We want to find the z-score for a student who finishes the test in 45 minutes
For x = 45,
z = (45 - 60)/10 = - 15/10 = - 1.5