Question

The area of a rectangular pool is given by the trinomial 4y2 + 3y – 10. What are the possible dimensions of the pool? Use factoring.

Answer 1

is this volume?

Answer 2

I don't think so?

Answer 3

Factoring is the name of the game here, as soon as that's done, the rest should be a breeze

Answer 4

4y - 5) • (y + 2)

Answer 5

Well then, you've done that faster than I'd hoped D:

Answer 6

Now, to dimensions, as in, the length and width of the pool
Well, there are rules here, one of them being, dimensions must be positive

Answer 7

So, uhh,
for what values of y is the first factor (4y -5) positive?

Answer 8

Where finding the area.

Answer 9

y +2 or y -1 ?

Answer 10

What? Where did you get those?

Answer 11

one second I keep getting some weird message

Answer 12

from who?

Answer 13

Something keeps trying to download

Answer 14

Don't just guess use calculations.

Answer 15

(4y -5) is the first dimension?

Answer 16

Yeah, let's call it that, since we can't really designate either as length or width XD

Answer 17

y + 2 and 4y – 5
y – 1 and 4y – 5
– y + 2 and –4y + 5
y – 2 and 4y + 5

Answer 18

Oh, are those the choices?
Well, the answer is clear, then.

You've already given it.

Answer 19

I keep getting a message saying F124125637565432165767o8654544 is unsafe

Answer 20

dude, stop getting messages with viruses.

Answer 21

it appears everytime I type something

Answer 22

do something.

Answer 23

then I must leave and come back in order to reset

Answer 24

So, I'm confused on what is the answer?

Answer 25

I think you had it already.

Answer 26

no I typed two different answers and asked witch one

Answer 27

17

KyleLee
Medals 0
y +2 or y -1 ?

Answer 28

\(4y^2 +3y-10\) ------> denotes area of pool

alright
the area of rectangular pool is given like this->
\(area~of~rectangular~pool= length \times breadth \)

so
now lets factor \(4y^2+3y-10\)


\(4y^2+3y-10\)
\(4y^2+8y-5y-10\)
\(4y(y+2)-5(y+2)\)
\((4y-5)(y+2)\)--------> \(length \times breadth\)

Answer 29

so the possible dimensions are 4y-5 and y + 2

Answer 30

yeah :)

Answer 31

I keep getting the message everytime I type something

Answer 32

cool :)

Answer 33

not cool, what is it? and how do I remove it?