Question

What is the difference of (5x - 2/ 4x) - (x - 2/ 4x)?

Answer 1

So it will be like this 5x-2-(x-2)/(4x)
4x/4x
x=1

Answer 2

the denominator is same 4x so you just need to write once.

Answer 3

How did you do that? Show me every step please.

Answer 4

Simplify (5x-2/4x) to 4 2/4x (or 4.5x), then simplify (x-2/4x) to 2/4x (or .5x). Next you subtract 4.5x- .5x= 4x. Substitute 1 for x to get your answer.

Answer 5

5x-2-(x-2)=0
5x-2-x+2=0
So then 5x-x-2+2=0
It will be 4x.. while -2+2=0
Lastly 4x/4x=1
For example:2/2=1,right?ok?

Answer 6

What is the sum of 1/2b + b/2?

Answer 7

@imtant

Answer 8

Ok this ques. you need to multiply b/2 with b
1/2b + b^2/2b
so it is b^2+1 all over by 2b.

Answer 9

What's the difference of (r + 2/ r + 4) - (3 / r + 1)?

Answer 10

@imtant

Answer 11

I need help with this question and just one more.

Answer 12

Ok,wait.

Answer 13

Multiply crossly.(r+2)(r+1)-(3)(r+4) divide all over by (r+4)(r+1)
it will be r^2+r+2r+2-(3r+12) divide all by (r+4)(r+1)
so,r^2+3r+2-3r-12 all divide by (r+4)(r+1)
then r^2-10 divide all by (r+4)(r+1)

Answer 14

Kathal in drove 180 miles on her vacation. She drove an average of 1.5 times faster on the second 90 miles of her trip than she did on the first 90 miles of her trip. Which expression represents the time she spent driving? Let x = her speed on the first half of the trip.

Answer 15

*Katalin*

Answer 16

@imtant

Answer 17

Hellooooo???

Answer 18

:(

Answer 19

1 trip=90 x miles
2 trips= 90x times 1.5=135 x miles
So the time is 180=135 x
x=1.33 for time.

Answer 20

These are the answer choices:
A. 150/x
B. 300/x
C. 150x
D. 225/x

Answer 21

(5x-2/4x)-(x-2/4x)
=(20x^2-2)/4x-(4x^2-2)/4x
=(20x^2-2-4x^2+2)/4x
=16x^2 /4x
=4x

Answer 22

? @imtant @surjithayer

Answer 23

Katalin drove 180 miles on her vacation. She drove an average of 1.5 times faster on the second 90 miles of her trip than she did on the first 90 miles of her trip. Which expression represents the time she spent driving? Let x = her speed on the first half of the trip.

A. 150/x
B. 300/x
C. 150x
D. 225/x