5. Find the sum or difference.
(7x + 2) + (-3x +1)

(7x + 2) + (-3x +1)

7x+2 -3x+1

7x-3x=4x                   2+1=3

=4x+3

Step-by-step explanation:

blue marble is 15 times out of 50 = 15/50 reduces to 3/10

landing on tails is 24 out of 50 = 24/50 reduces to 12/25

to find the probability of both multiply together:

3/10 x 12/25 = 3 x 12 / 10 x 25 = 36/250

if you multiplied the numerator and denominator by 10 you get 360/2500.

the answer is 360/2500

e.

step-by-step explanation:

because there are always 10 numbers in a phone number.