Answer:
By 19% the computer was less than the original price
Step-by-step explanation:
The original price on the computer was $1500
Discount is 25%= 0.25
Discount amount = 1500 * 0.25 = 375
Discounted price = 1500 - 375 = 1125
Now 8% shipping cost to discounted price
8% = 0.08
Shipping cost = 1125 * 0.08 = 90
cost of computer with shipping cost = 1125 + 90 = 1215
Percentage less = (original cost - cost of computer now ) / original cost
= 
To get percentage we multiply by 100
0.19 * 100 = 19%
1-5q+ 2(2.5q+8)
1-5q+5q+16
0+15
15
(The q goes away because in addition a negative and a positive of the same # equal 0 since its 0 there is no letter)
4 squared + b squared = 8 squared
Answer:
1 stack of 60
2 stacks of 30
3 stacks of 20
4 stacks of 15
5 stacks of 12
6 stacks of 10
60 stacks of 1
30 stacks of 2
20 stacks of 3
15 stacks of 4
12 stacks of 5
Prime Factorisation

Step-by-step explanation:
To find the number of stacks you can make just divide the total by the size of the stacks. This also works in reverse.
To find the prime factorisation you just find the factors of the number by dividing it by the largest prime possible.
20% of 65 is 0.2 times 65 which is 13.
Hope this helps.