To find percentage decrease, we need to see how "much" of 120 was taken off.
So, let's call the percentage x (the percentage in decimal form).
120 * x = 78
so,
78/120 = x
.65 = x
So, our percentage in decimal form is .65, to get it to an actual percentage, we multiply it by 100 (since a percentage is out of 100)
The percentage decrease is 65%
<span>3 1/4 - 2 1/2
Convert the mixed numbers into improper fractions
13/4 - 5/2
Multiply until both fractions have the same common denominator
13/4 - 10/4
Subtract the numerators but NOT the denominators
Final Answer: 3/4</span>
Answer:
the store offered the better deal
Step-by-step explanation:
the store was only 20 dollars and online e was 42 so the store had the better deal
Remember
a²-b²=(a-b)(a+b)
8x²-50y²
2(4x²-25y²)
(2)([2x]²-[5y]²)
2(2x-5y)(2x+5y)
Answer:
D
Step-by-step explanation:
First take out a factor of 2:
2(1 - 25x^2)
Then factor the difference of squares:
2(1 -5x)(1+5x)
