Answer:
A. 15.
Step-by-step explanation:
9^2 + 12^2
= 81 + 144
= 225.
Taking the square root: we get 15.
Answer:
Step-by-step explanation:
when you are asked for a unit rate it is always something like this
$5 /pound or 2.2 pounds/ kg
We set up the equation like this:
$13.50/3 pounds
So, for this we need to get 3 pounds down to 1 pound. Also, to make the eqaution balance we need to divide $13,50 by 3 too!
So, the unit rate is $4.5/pound or $4.5 per pound.
Answer: $31.02
Step-by-step explanation:
Cost of four DVDs at the rate of $9.34 per one = $9.34 x 4
= $37.36
Discount code = 25% of the cost price
= 25% of $37.36
= $9.34
Therefore Cost Price of the 4 DVD = $37.36 - $9.34
= $28.02
Sale tax percentage =7% of the cost price
= 7% of $37.36
=$2.61
To the nearest cent =$3
Therefore, the total cost of his order = $28.02 + $3
= $31.02.