Answer:
D
Step-by-step explanation:$400x.30=$120
400-120=280
$280x.10=28
280-28=252
Answer:
Step-by-step explanation:
An negative exponent seems hard, but it really isn't!
Let's say you have 
All you do is inverse the expression, or find the reciprocal. When you do this the exponent changes to positive .

simplifies into 8. So, the result is

Hope this helps! Please mark as brainliest, thanks!
The answer for the following question is A) -b
Answer:
The 2 numbers are 22 and 23
Step-by-step explanation:
let the two numbers be x and x+1
according to the question:
(x+1)^2 - x^2 = 45
x^2+1+2x - x^2 = 45
2x + 1 = 45
2x= 44
x = 22
the other number is x+1 = 22+1 = 23
therefore, the two consecutive numbers are 22 and 23
Hope it helped u....
Answer:
15:37 or 3:37
Step-by-step explanation:
3/4=0.75
0.75+9.22=9.97
5+9.97=14.97