Answer:
Step-by-step explanation:
a² - b² = (a +b)(a - b)
9x² - 4 = (3x)² - 2²
= (3x + 2 )(3x - 2)
53y-42y=55
11y=55
Y=55/11 =5
Step-by-step explanation:
9.1k=64.7
Find k
64.7/9.1=7
Plug in 7
9.1(7)=64.7
Multiply 9.1 and 7=63.7
63.7=64.7
Divide
1.02 or 1 1/50
Hope that helps somewhat
She was correct to multiply .75 by .15 to get .1125, but she forgot to add that value to .75 to get the total amount of fabric needed.
Answer:

1 is a whole number, an integer, and rational.
Step-by-step explanation: