Question

How many hours is 2/3 of 1 hour and 36 minutes? PLEASE Help me answer it, i feel like im close...yet so far away!

Answer 1

1 hour and 36 minutes is 96 minutes, agreed?

Answer 2

corrrrrrect! and I get pretty stuck after that!

Answer 3

okay. what is one-third of 96?

Answer 4

okay when I type it in my calculator im getting 32! yea?

Answer 5

ohh so like .5 hours?

Answer 6

okay great! so one third of 96 is 32.
what is two-thirds of 96?

Answer 7

would i add 32 + 32? = 64?

Answer 8

very good!
so 2/3 of 96 minutes is 64 minutes.
how many minutes in an hour?

Answer 9

60 so its one hour 4 minutes?

Answer 10

exactly! you can write your answer as 1 hour 4 minutes or (64/60) hours which is the same as 1.067 hours

Answer 11

and I have another question I just need to figure out what method to use:
Find the sum of the solutions of the equation: 2x\[^{2}\] +5x-3

Answer 12

use factorisation

Answer 13

2 * -3 = -6
think of combinations you can use to get 5x from factors of -6

Answer 14

like -6 and 1?

Answer 15

wait thats negative 5

Answer 16

yup
but -6 +1 = -5x, not 5x
think of another combination

Answer 17

okay are we adding the two factors? So like 2 +3= 5

Answer 18

yes, 2+3 =5, but 2 times 3 is 6
we want -6
so 2 and 3 is not the correct combination

Answer 19

okay, 6 plus -1 !! :)

Answer 20

very good!

Answer 21

go ahead and factorize it now

Answer 22

omg that took a long time! haha okay i got (2x+6) and (x-1)

Answer 23

no you should get (2x-1) and (x+3)

Answer 24

then do i set them both to equal zero and solve or am i done with the solution

Answer 25

the question asks to find the sum of the solution..

Answer 26

\[2x ^{2}+5x-3 =0 \]
\[2x ^{2}+6x-x-3 =0 \]
\[2x (x+3)-1(x+3) =0\]
\[(2x-1)(x-3)=0\]
\[x = \frac{1}{2}, -3\]

Answer 27

phenomenal, thank you thank you! and another thing when two slopes are parallel does that mean there slopes are the same?

Answer 28

yes. it also means that there is no point of intersection.

Answer 29

slopes cannot be parallel, only lines can be parallel. I assume you meant lines, not slopes in your question.

Answer 30

oh okay okay yes I meant lines. for example 2/3 and 2/3 would be parallel lines
correct?

Answer 31

and if the question gives you a 4 quadrant grid and there is a triangle drawn on it and they ask how long is side AB , could you use the distance formula : "d= the square root of x2-x1) squared plus (y2-y1) squared ???

Answer 32

yes

Answer 33

Okay thank you! You have truly been a help to me even so late! I am studying for my placement exam to College algebra at a community college and i think i got it i appreciate it!

Answer 34

you are very knowledgeable, you should consider tutoring!

Answer 35

lol, i wouldn't be any good at it. and you are welcome :)