Question 5 6 pts
A phone company collects data on their customers. One set of
information the company collects is whether customers use cell phones or
land lines primarily and their ages. The results for 100 customers are
shown on the table below.
cell
land line
total
under 50
70
5
75
over 50
5
20
25
total
75
25
100
What is the joint relative frequency of cell phone customers over 50?
5%
20%
25%

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!

answer:

125 yards

explanation:

75+50=125. that is my answer

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: