Answer:
5x^2+120x
Step-by-step explanation:
5x(x+24)
Step 1: Use distributive property to expand the expression. Multiply 5x separately with all the terms inside the bracket.
Step 2: 5x(x) = 5x^2
5x(24) = 120x
Answer: 5x^2+120x
Note: If you need to further solve it, you can factor it.
To Factor;
5x^2+120x
Step 1: Factor out the common: 5x
Step 2: 5x times x = x^2
5x times 24 = 120x
Therefore,
Factored answer: 5x(x+24)
Hope this helps.
Answer:
Step-by-step explanation:
There are 26 integers in the set
. If the wavelength of light is uniformly distributed, then the probability that it has a wavelength of any one of these integers is
, so the distribution of wavelengths has probability mass function
The mean (expected value) is given by
and the variance by
First, the mean:
(rounded up from an exact value of 642.5)
Now for the variance:
Meanwhile,
, which gives a total variance of
(rounded up from 56.5)
Answer: $18.52
Step-by-step explanation: First you multiply the grocery store purchases by 3%, then you multiply the other purchases by 1.5%. Then you add together to get your total cash back
$326.79x.03=$9.80
$581.34x.015=$8.72
$9.80+$8.72=$18.52
Each ruler would cost about 9 cents