Question

plz help ary man or anybodt rely

Answer 1

Simplify the rational expression.

Answer 2

@damir

Answer 3

@satellite73

Answer 4

@Directrix

Answer 5

oh thx 4 comen

Answer 6

i suck at factoring , but that is what you have to do, factor and cancel

Answer 7

i am here no worries

Answer 8

\[x^2+4x-21=(x+7)(x-3)\] pretty sure
now factor the bottom

Answer 9

that is it

Answer 10

all though you have narrowed it down to B or C because the numerator will be \(x-3\)

Answer 11

thx

Answer 12

I have another Q

Answer 13

you still have to factor the denominator though

Answer 14

what two integers multiply to give 42, and add to give 13?

Answer 15

Its C guys

Answer 16

@satellite73
@damir

Answer 17

@mathmale

Answer 18

@mathmate

Answer 19

@mathmale

Answer 20

Put the numbers in and use your calculator to find the rate of discount:
P=regular Price=$28
D=discount=regular price - sale price = $28-$20
R=Rate of discount = \(\Large R-\frac{P-D}{P}\)
Use your calculator to find R.

You can also use common sense to find the answer:
1. rate of discount can never be greater than 1, otherwise the seller would be paying you to give you the sweater.
2. In this case, the sweater was sold at 20 out of 28, so the discount did not exceed half of the original price.
Based on the above, you can find the answer (out of the four choices)

Finally, the given formula is overly complicated, no wonder students (sometimes) find math difficult.
The same answer could be simply \(\Large R=\frac{D}{P}\), or \(\Large R=1-\frac{S}{P}\), where S=sale price

Answer 21

thx @mathmate

Answer 22

You're welcome! :)