Question

The temperature falls from 0 degrees to Negative 12 and one-fourth degrees in 3 and one-half hours. Which expression finds the change in temperature per hour?

Answer 1

the answer your looking for is -12.25 / 3.5

Answer 2

thanks

Answer 3

no its more than that

Answer 4

its a linear expression

Answer 5

oh

Answer 6

hold on js a sec

Answer 7

k

Answer 8

so hes right about that part but thats your first step

Answer 9

if you can solve for the piece of that, you get -3.5 ofc

Answer 10

which is the change per hour, but you need a full expression

Answer 11

so you would write something like this
\[y=-3.5x\]

Answer 12

hm

Answer 13

let x be the number of hours, and y is the tempurature after x hours

Answer 14

im on edgenuity..

Answer 15

whats the platform change?

Answer 16

ah then your answer is d

Answer 17

oh

Answer 18

you just have to convert the given improper fractions into proper fractions, and compare

Answer 19

mk

Answer 20

and ill assume you know how to convert them?

Answer 21

if not i can explain it

Answer 22

yh

Answer 23

-12.25

Answer 24

is yo answer

Answer 25

-12.25 is the answer bro!!!!

Answer 26

Change in temperature is 0 - 12 and 1/4, therefore just -12 and 1/4 which is equal to
-49/4

Then if time is 3 and 1/2 hours, that fraction is the same as 1/2 + 6/2 = 7/2 hours

(-49/4)/(7/2) = the answer, but we need to simplify. When dividing by any fraction, it is equivalent as multiplying by its reciprocal (The flipped version) so 7/2 becomes *2/7
-49/4 * 2/7 = -98/28

Both the top and bottom can be divided by 14 to simplify it to -7/2

Answer 27

The reason why it's not 12.25 (or 12 and 1/4) is because we have to find it PER hour. Rate is always a unit that is divided by time.

Answer 28

lol