Question

Describe the steps you would take to solve I=prt for t

Answer 1

\[\Large I=prt\]


\[\Large \frac{I}{pr}=t\]


\[\Large t=\frac{I}{pr}\]

Answer 2

Are you sure!

Answer 3

yes I'm sure

Answer 4

Description: "Divide both sides by pr"

Answer 5

Can you help me with another one please?

Answer 6

sure

Answer 7

ax+b=cx-d;2x+9=7x-1

Answer 8

what do you want to do here?

Answer 9

I have no idea im lost

Answer 10

I mean, are there any other instructions?

Answer 11

It says sole the literal equation for x. then use the solution to solve the sepcific equation

Answer 12

solve sorry

Answer 13

U there

Answer 14

i see, so solve ax+b=cx-d to get


\[\Large ax+b=cx-d\]


\[\Large ax=cx-d-b\]


\[\Large ax-cx=-d-b\]


\[\Large x(a-c)=-d-b\]


\[\Large x=\frac{-d-b}{a-c}\]



In the case of the second equation 2x+9=7x-1, we see that a = 2, b = 9, c = 7 and d = 1, so plug all this info into the last equation to get



\[\Large x=\frac{-d-b}{a-c}\]


\[\Large x=\frac{-1-9}{2-7}\]


\[\Large x=\frac{-10}{-5}\]


\[\Large x=2\]


which is your answer

Answer 15

does that make sense?

Answer 16

Yes thank you:) that was awesome i would of never guessed!

Answer 17

5x+4y=10

Answer 18

what about it?

Answer 19

I need help writing the equation so that y is a function of x

Answer 20

ok, Solve for y to get


\[\Large 5x+4y=10\]


\[\Large 4y=10-5x\]


\[\Large 4y=-5x+10\]


\[\Large y=\frac{-5x+10}{4}\]


\[\Large y=-\frac{5}{4}x+\frac{10}{4}\]


\[\Large y=-\frac{5}{4}x+\frac{5}{2}\]

Answer 21

Thats the answer

Answer 22

yes

Answer 23

alternatively, you can replace y with f(x) as they are the same thing to get \[\Large f(x)=-\frac{5}{4}x+\frac{5}{2}\]

Answer 24

but the first answer is better in my opinion

Answer 25

thanks what about......
18x-2y=26?

Answer 26

18x-2y=26


-2y=26-18x


-2y=-18x+26


y=(-18x+26)/(-2)


y=(-18x)/(-2)+26/(-2)


y = 9x - 13

Answer 27

what about
4(2x-y)=6

Answer 28

4(2x-y)=6


8x-4y=6


-4y=6-8x


-4y=-8x+6


y=(-8x+6)/(-4)


y=(-8x)/(-4)+(6)/(-4)


y=2x-3/2



So the answer is \[\Large y = 2x-\frac{3}{2}\]

Answer 29

Ok this is easy 5x-3x=9?

Answer 30

two x terms?

Answer 31

5x and 3x

Answer 32

5x-3x = 9

2x = 9

x = 9/2

Answer 33

3x+2y+5x=12 i dont get it/???

Answer 34

3x+2y+5x=12


2y+8x=12


2y = -8x+12


y = -4x+6

Answer 35

8x-8y=5

Answer 36

?

Answer 37

solve for y and let me know what you get

Answer 38

if you're stuck, the first step is to move the 8x to the other side

Answer 39

x=5???

Answer 40

8x-8y=5


-8y=5-8x ... subtract 8x from both sides

Answer 41

from there, rearrange terms and divide both sides by -8 to solve for y