Question

In physics, we use the equation s= d/t to show the speed of an object. This equations means
that the speed of an object is equal to distance it moved divided by the time it moved. If a car
was going 65 miles per hour and went 910 miles; how long was it driving?

Answer 1

@phi

Answer 2

one more q after this

Answer 3

oh man--there is one more question for the 1st one we were working on

Answer 4

we can go back to that other post.

Answer 5

i closed that post

Answer 6

For this problem, you have
s= d/t

and you are told speed is 65 and distance is 910
where do we put the 65 in
s= d/t
i.e. which letter stands for speed?

Answer 7

if you just help me with these 2 last questions we can figure something out

Answer 8

s

Answer 9

ok, so replace the s with 65
what does the formula look like ?

Answer 10

65=d/t

Answer 11

what grade are u in anyway?

Answer 12

yes.
you also know the distance is 910
which letter stands for distance? where should the 910 go?

Answer 13

d--so 65=910/t

Answer 14

yes.
now you have to find what number t is

Answer 15

yep

Answer 16

multiply both sides by t
that means write *t on both sides
can you do that ?

Answer 17

hangon-- i might be able to get his answer- give me a sec to figure this out

Answer 18

t = 14 ?

Answer 19

you should try now while you have help

Answer 20

i used a calc to divide

Answer 21

yes, but how did you know you should divide ?

Answer 22

i ment * sorry-- my auto correct has been putting in words if i use them oftenly

Answer 23

* = multiply

Answer 24

i have just learned from you and my school

Answer 25

you solve by doing this
65= 910/t
multiply both sides by t
65t= 910 * t/t
on the right side t divided by itself is 1 (that is why we multiplied by t)
65 t= 910
now divide both sides by 65
you hget
65/65 * t = 910/65

Answer 26

that simplifies to
t= 910/65
t= 14

Answer 27

yep-- thats what i said ;)

Answer 28

the point is not just to get the answer, it is to know how to get the answer.

Answer 29

but how would i right that out for the answer

Answer 30

well i know

Answer 31

@phi

Answer 32

you would write out the lines I posted.

Answer 33

ok

Answer 34

@phi

Misha wants to know how many pepperonis to put on his pizza. He was told that he should
use 1 pepperoni rounded to the nearest whole pepperoni for each .75 inches of diameter in a
pizza. Show an equation that would solve how many pepperonis he would need if his pizza has
a 8 inch radius.

Answer 35

you need a formula for the area of a circle
do you know it?

Answer 36

no

Answer 37

can you look in your notes?

Answer 38

ohh i found it i do know how

Answer 39

my teacher taught me a way to do it. so i need the numbers and i can calculate in my notes

Answer 40

it is really cool

Answer 41

never mind