
First, combine like terms:

Now just simplify the coefficients of x and y. We do this by converting each pair of fractions to ones with a common denominator. Then we can combine them easily.


So the simplified expression would be

40.
45 seconds is 3/4 of a minuet so after 45 seconds you have done 30/40 push ups after a minute you have done 40/40= one minuet.
40.
Answer: expression 1,3 and 4 are equivalent to 0.75t-21.
Step-by-step explanation:
Expression 1
3/4t-21
= 0.75t - 21
Expression 2
3/4( t-21)
Multiply through by 0.75
= 0.75 ( t - 21 )
= 0.75t - 15.75
Expression 3
0.75( t-28)
Multiply through by 0.75
= 0.75t - 21
Expression 4
t-0.25t-21
let t = 1
1-0.25t - 21
= 0.75t - 21
expression 1,3 and 4 are equivalent to 0.75t-21.
Answer: A (32,100,000
Step-by-step explanation:
My answer is correct because, All you have to do is multiply 3.21 times
.
To make it easier we have to simlify
.
equals 10000000. So now we just have tii multiply 3.21 and 10000000. 3.21 times 10000000 equals 32,100,000.
Hope This Helps!
(P.S: Thanks so much for sending this question now because of it im rank ace! Thanks so much and I will remember this question as the question that took me a rank up!)