The average rate is the number of equations divided by the time to do them.
The number of equations is the rate multiplied by the time.
On Monday, the number of equations is
.. number = rate*time = P*3
On Tuesday, the rate is
.. rate = number/time = (3P)/2 . . . . . Helen's average rate on Tuesday
This is how I did it:

use distribution

use addition

use addition and subtraction

use division


So your answer is
Answer:
1:5
Step-by-step explanation:
13cm: 65cm = 13cm/65cm =13/65 = 1/5= 1:5
Answer:
P-value = 0.0368
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 101.5
Sample mean,
= 106.4
Sample size, n = 30
Alpha, α = 0.05
Population standard deviation, σ = 15
First, we design the null and the alternate hypothesis
We use One-tailed(right) z test to perform this hypothesis.
Formula:
Putting all the values, we have
Now,
Since,
We reject the null hypothesis and accept the alternate hypothesis. Thus, students in Pennsylvania have an IQ that is significantly greater than the state average.
P-value can be calculated with the standard normal table.
P-value = 0.0368
P-value is lower than the significance level.
You would use L to measure the amount