Question

Can somebody help check 12 of my practice questions? I need to make sure they are correct to prepare for class. I will fan and medal

Answer 1

#1

Answer 2

#1 is correct..

Answer 3

#2 Not sure about this one

Answer 4

start by cross multiplying

Answer 5

7(x-3) = 7x - 21
4*21 = 84

so 7x - 21 = 84

I presume you can take it from there

Answer 6

So B,
X=15?

Answer 7

yea

Answer 8

#3 C or D

Answer 9

to convert any number to a percent, just multiply by 100

Answer 10

3.1*100 = ?

Answer 11

what is 3.1 times 100?

Answer 12

@Ms-Brains Please stop posting questions with no work shown. It is not appropriate for you to get others to do your homework or exams for you. Let's see what YOU can do.

Answer 13

Okay @tkhunny I already did the work, and I was just making sure they were correct. Sorry! I didn't know I can't do that. ;-;

Answer 14

3.1 * 100 = 310.0

Answer 15

good, so which answer choice do you think it is?

Answer 16

B. 310%

Answer 17

great

Answer 18

You did not address my concern. All cheaters say, "I already did the work." The ONLY way for you to differentiate yourself from cheaters is to SHOW your work, not merely claim that you did it. Show YOUR work.

Answer 19

Okay, give me a second to copy my work from paper to the the drawing pad.
Lol, Dude I'm not afraid to show my work, it just seems easier like this. But yeah, I'm sorry. And I will post the work from now on. :)

Answer 20

#4

Answer 21

@tkhunny That good?

Answer 22

yeah that looks good to me

Answer 23

(there's a simpler way to do it, though. 24 is 3 times 8, so the missing number must be 3 times 7)

Answer 24

#5 I don't know how to show this work, because it seems like you can quickly do it in your head. D?

Answer 25

yeah

to show your work I would just write (0.24)*75

Answer 26

or, now that I realize it, (0.24)*75 = 0.75*24 = (3/4)*24 = 18

Answer 27

#6
A.

(sorry for not showing work. I don't know how to show work for %% problems

Answer 28

yeah

0.36x = 180

Answer 29

#7

Answer 30

hm not quite

Answer 31

keep the proportion consistent

either do

miles/gallons = miles/gallons

or

gallons/miles = gallons/miles

Answer 32

(so, like, don't do something like gallons/miles = miles/gallons because that won't work)

Answer 33

Oh, So If I do 115/5 = 18/x
It wouldn't be correct?

Answer 34

right, because on the left side you have

miles/gallons

and on the right side you have

gallons/miles

Answer 35

is it x/115 = 5/18?

Answer 36

hmm not quite

Answer 37

you would need to switch x and 115 for that to work

Answer 38

You tell me if it's good. If it's YOUR work, then it's great. Not so much, otherwise.

Answer 39

Hmm?

That would mean it is 5/115 = 18/x

But ^ that is the same as 5/115 = x/18.

Just the back is switched and that doesn't make sense ;-;

Answer 40

Yes, it's my work. Omg, I said I'm sorry. I didn't mean to violate any policy of anything. ;-; @tkhunny

Answer 41

nope, not quite

5/115 = 18/x

and

5/115 = x/18

are not the same proportion

Answer 42

if you want to keep the two sides equal, you have to switch both, not just one

Answer 43

5/115 = 18/x is the correct solution because it puts

gallons/miles = gallons/miles

Answer 44

You and Vocaloid seem to be getting along very well. If you posted questions on separate threads, as is customarily recommended, you could give Vocaloid more medals for all the good work. :-)

Answer 45

Oh...okay. I get it now!
so back to the question.. it's C, right?

Answer 46

ahaha I don't really care about medals, I just do this for fun :P

Answer 47

nope not C, think carefully