Answer:
a= 40
Step-by-step explanation:
-5a + 7.5a - 25 = 53.2 + 21.8
add like terms on both sides: 2.5a - 25 = 75
add 25 on both sides: 2.5a = 100
divide both sides by 2.5: a = 40
The answer is - xsquared+4x-4 or -x2 the 2 is squared+4x-4
Is there a picture to this question?
The answer is 15 seconds .
1/20 is a tiny portion of the length that needs to be traveled. 20/20 is the whole length. If 1/20 gets traveled in 3/4 of a second, multiply 3/4 by 20 to see how long it takes to travel 20(1/20) which is equal to 1, the whole path.
20(3/4) = 15 seconds
-7 degrees because it would be 8 degrees and subract 5+5+5 (which is 15) degrees from 8 and its -7 degrees
