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1/8(-7x-14) = -7/2(m-3)

The denominators here are 8 and 2, the lowest common denominator is 8

with a question like this it is easiest to multiply both side by the lowest common denominator and that will get rid of all the fractions.

\(\frac{(-7x-14)}{8} = \frac{-7(m-3)}{2}\\ \frac{7(-x-2)}{8} = \frac{-7(m-3)}{2}\\ \frac{8}{1}\times \frac{-7(x+2)}{8} =\frac{8}{1}\times \frac{-7(m-3)}{2}\\ \frac{1}{1}\times \frac{-7(x+2)}{1} =\frac{4}{1}\times \frac{-7(m-3)}{1}\\ -7(x+2)=-28(m-3)\\ x+2=4(m-3)\\ x+2=4m-12\\ x=4m-14\\ \)

700+650 = 1350, 1350/2 = 675, 11623/675 = 17.2 hours

THANKS!

vehicle a departs at 64km/h. 2 1/4 hours later, vehicle b follows at 112km/h. how long will it take b to catch up to a?

Let the time taken by "a"= t

64t = 112(t - 2.25), solve for t

t = 21/4 =5 1/4 hours - time taken by "a"

5.25 - 2.25 = 3 hours - when "b" will catch up with "a"
 

I do not understand this question bioplant. :/

vehicle a departs at 64km/h. 2 1/4 hours later, vehicle b follows at 112km/h. how long will it take b to catch up to a?

The first vehicle has a   2.25*64 = 144km head start.

So now I will take the time from where the second vehicle leaves.

At any point in future time  let t be in hours

Vehicle 1 will have travelled       144+ 64t

Vehicle 2 will have travelled                112t

They  will be at the same point when,

144+64t=112t

144        = 48t

t = 144/48 = 3 hours

Hi bioplant,

This is a good question :)

"If the question says -4-21 is 21 a negative or positive number?"

You can think of this 2 ways.

either

-4 + -21      where you are adding a negative number, I think that is usually the best way to look at it.

OR

-4 -  +21    where you are taking away a positive number.

Both interpretations are correct but it is usually more helpful to think of it as adding a negative number

------------------------------

-4-21 = -25

If you are confused then you use a number line to help you work this out.

start at -4 and then go 21 more in the NEGATIVE direction   that will get you to -25

its like saying -4+(-21)

I think e in this case means 'exponent'

SO that expression equals:

0. 0000000000000023553

(x-6)(x+7) = x(x+7) -6(x+7) = x^2 + 7x -6x - 42 = x^2 +x - 42

<___________0___________>

                         I

                         I

Balanced

r u going 2 r**e me?

Thanks for your query,  we always like feedback :))

There are brackets in the question.

When there is a minus sign in front of a bracket people often make mistakes

for instance

6-(2+3) = 6-5 = 1

or to put it another way

6-(2+3) = 6-2-3 = 1           IT IS NOT       6-2+3 !!

this is the same as

6-1(2+3)

why did you use brackets

(-7x - 14) / 8 = (2m - 6)/7

hope this gets you on the right track

p > -2

In how many ways can a committee consisting of 4 faculty members and 5 students be formed if there are 12 faculty members and 14 students eligible to serve on the committee?

12C4 * 14C5

please no Popo

y=6x+(-2)

Popo the epic dwarf will come for you

Effectively

simple,,,

7x^2 + 5m^1

if need you need explaination please dm me at @arixivo on twitter or @buzzbuzzari on instagram

unfortunately i do not have my phone right not so i may not reply until later

simple,,,

7x^2 + 5m^1

if need you need explaination please dm me at @arixivo on twitter or @buzzbuzzari on instagram

unfortunately i do not have my phone right not so i may not reply until later