1. find the speed of a car
the distance is 124 miles and the time is 2 hours
the speed is defined as distance / time, therefore
speed = 124/2 = 62 miles/hour
that is the speed
2.find the time from equation time = distance/speed, when the distance is 395 miles and the speed is 79 miles/hour, then
time = 395 miles / 79 miles/hour = 395/79
time = 5 hours
Answer:
425 milliliters of compound A are needed
Step-by-step explanation:
We were told that 
milliliters of compound A and 
milliliters of compound B is needed to make the drug.
This means that each drug contains 11 milliliters of both compounds.
milliliters is the volume of each drug.
Therefore the chemist needed 
millilirteres of compound A.
6 because diameter times pie =area just like radius squared times pie = area. so you simply take 36 and find the square root of it. hope this helps!
Answer:
The null hypothesis is that all the different teaching methods have the same average test scores.
H0: μ1 = μ2 = μ3 = μ4 = μ5
The alternative hypothesis is that at least one of the teaching methods have a different mean.
Ha: at least one mean is different. (μ1 ≠ μi)
Step-by-step explanation:
The null hypothesis (H0) tries to show that no significant variation exists between variables or that a single variable is no different than its mean. While an alternative Hypothesis (Ha) attempt to prove that a new theory is true rather than the old one. That a variable is significantly different from the mean.
For the case above, let μ represent the average test scores for the teaching methods:
The null hypothesis is that all the different teaching methods have the same average test scores.
H0: μ1 = μ2 = μ3 = μ4 = μ5
The alternative hypothesis is that at least one of the teaching methods have a different mean.
Ha: at least one mean is different. (μ1 ≠ μi)
Answer:
b+3 or 3+b
Step-by-step explanation:
