The first statement "<span>y varies directly as x" means that as y increases, x also increases. To help us we need to assign a proportionality constant, k. We can now say:</span>
y=kx where k is just a constant. Then substitute the values,
180=kn
n=5k
With these equation we know that k is equal to (positive or negative) 6 and therefore we can get n to be (positive or negative) 30.
Answer:
answer is in the picture.
Answer:
42: 1,2,3,6,7,14,21,and 42
GCF of 42 & 15: 3
GCF of 42 & 50: 2
Step-by-step explanation:
have a day
Answer:
the graph rises to the left and falls to the right.
the answer is B
Step-by-step explanation:
Answer:
-0.4
B. The answer is the same irrespective of the sample sizes.
Step-by-step explanation:
Given that an article in the November 1983 Consumer Reports compared various types of batteries. The average lifetimes of Duracell Alkaline AA batteries and Eveready Energizer Alkaline AA batteries were given as 4.1 hours and 4.5 hours, respectively
Let X be the sample average lifetime of 81 Duracell and Y be the sample average lifetime of 81 Eveready Energizer batteries.
Now we have sample mean difference does not depend about the sample sizes.
This is because
E(X-Y) = E(X)-E(Y) for all X and Y
Mean of X-Y =
This does not depend on the specified sample sizes
B. The answer is the same irrespective of the sample sizes.