Based on the equation katie gets 20 text messages + 50 more for each day she is away.
therefore the number 50 shows how much the number of text messages (t) increases for each day she is away.
The question asks the answer that comes out from the division of 3912.99 by 15.9. Both the numbers are in decimal form, so the division will be easy.
3912.99/15.9
= (391299 * 10)/(159 * 100)
= (391299)/(1590)
= 246.10
So the answer that comes out from the division of the two numbers given in the question is 246.10. I hope i have described the full process and it has helped you to understand the way these kind of problems need to be tackled.
Answer: z-y+bc/a
Step-by-step explanation:
ax-bc+y=z
ax-bc=z-y
ax=z-y+bc
x=z-y+bc/a
Answer:
The mean and standard deviation of Y are, 94 and 0.28 respectively.
Step-by-step explanation:
Let the random variable , 'Test grades on the last statistics exam' be X.
Then according to the question,
E(X) = 78 ------------(1)
and
= 0.14------------(2)
Now, according to the question,
Y = 2(X - 31)
⇒E(Y) = 2(E(X) - 31)
=
= 94 ----------------(4)
and
V(Y) = 4V(X)
⇒
⇒ = 0.28
So, the mean and standard deviation of Y are, 94 and 0.28 respectively.
Answer:
Step-by-step explanation:
While the "law"
may seem more applicable, and may seem to be a special case of the law shown in the answer above, it is not true in general. For example, ...