The answer is:
A) If a = b, then a + c = b + c.
and C) If w + 2 = 7, then w + 2-2 = 7- 2.
Answer: 10 quarters and 2 dimes.
Step-by-step explanation:
4 quarters = 1 dollar
1 quarter = 25 cents
1 dime = 10 cents
If 4 quarters are 1 dollar then 2 dollars would be 8 quarters.
8 quarters + 2 quarters (50 cents) would be 2.50
You cant add another quarter or that would be 2.75.
Instead you do: 10 quarters + 2 dimes = 2.70
So to sum it all up there are 10 quarters and 2 dimes.
The water pipe
3 feet is less than 8 feet so if you go down 8 feet it would be deeper than 3 feet making the water pipe higher.
Answer:
(x² - 3)(x² + 3)( + 9)
Step-by-step explanation:
- 81 ← is a difference of squares and factors in general as
a² - b² = (a - b)(a + b)
- 81
= ( )² - 9²
= ( - 9)( + 9) ← - 9 is also a difference of squares
= (x² - 3)(x² + 3)( + 9)
3x-y=1. To find standard form from slope-intercept form, you move mx to the side with y and if mx is negative then you divide by negative 1