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labwork [276]
3 years ago
14

What is x? 4x-7= -3x

Mathematics
2 answers:
Oksana_A [137]3 years ago
7 0
4x-7=-3x
4x+3x=7
7x=7
x=7/7
x=1
Ede4ka [16]3 years ago
3 0
X=7
distribute the equation
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P divided by 1 2/3 = 2 1/5
Vlada [557]

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4 0
3 years ago
Read 2 more answers
Solve for z<br> 4/z =<br> 12/5 <br> what is z
Verdich [7]

Answer:

5/3      = z

Step-by-step explanation:

You can use proportions to figure this out.

Imma solve this as I work through it.

So

4/z is equal to 12/5. So you can do something called the butterfly method (I have never used this before, but it works tho) and the method involves only multiplication and division.

Lemme clean this up for ya

The butterfly method involves multiplying in a cross format on both sides, so the

4                       12

__        =      ______

z                          5

becomes 4 times 5, and z times 12.

4 times 5 is 20, and z times 12 is 12z

so you now have 20 = 12z

Lets simplify the equation by dividing by 4s

20 divided by 4 is 5 and 12z divided by 4 is 3z

so

5 = 3z

You can divide again

by dividing both sides

by

3

to get the unit rate of z.

It will be a fraction though

and it won't look pretty

but here it is:

5

__  = z

3

So

It is

5/3

Hope this helps

and hope you get a laugh out of this

yeeha

7 0
2 years ago
What is this answer im being timed so plz help
olchik [2.2K]

Answer:

(Kind of cheating but since you're timed I'm just gonna five you the answer:

3/11

Step-by-step explanation:

I got this by guessing a bit, I used what varibles I had and 0.27 & 3 and used them.

So 3/0.27 = 11.11 (Repeating) so then I rounded this to a whole number,

3/11 = 0.27 (Repeating)

6 0
3 years ago
What is 2.99 as a fraction
Serga [27]
2.99

2 is a whole number

0.99 = 99/100

your fraction is:

mixed number = 2   99/100
improper fraction =  299/100 (multiply whole number to denominator & then add numerator)

hope this helps
8 0
3 years ago
Read 2 more answers
when determining whether proportion are Equal we need to do which of the following? .addition, .multiply straight across, dividi
Lisa [10]

Answer:

Cross Multiplying.

Step-by-step explanation:

By multiplying each ratio by the second number of the other ratio, you can determine if they are equivalent. Multiply both numbers in the first ratio by the second number of the second ratio. For example, if the ratios are 3:5 and 9:15, multiply 3 by 15 and 5 by 15 to get 45:75.

5 0
2 years ago
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