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irakobra [83]
3 years ago
7

How can I solve a multi step equation ex. 4x-9=7x+12

Mathematics
2 answers:
Doss [256]3 years ago
5 0
4x-9=7x+12
    +9       +9
4x=7x+21
-7x -7x
-3x=21
x=-7
First, you add 9 to 12
Next, you subtract 7x to 4x 
Lastly, you divide 21 by -3
Basically, you want to just get x by itself. Once you do that you will be all good. :)
harkovskaia [24]3 years ago
4 0
First you bring the x to one side so u subtract 4x from 7x and you get the new equation as -9=3x+12 then you just solve and you get x is equal to -7
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3 years ago
Which equation is y=(x+3)2+(x+4)2 rewritten in vertex form
Julli [10]
Vertex coordinates: (h, k)

Vertex form: y = a(x-h)^2 + k

y = 2(x+3) + 2(x+4)

Use distributive property:

y = 2((x+3)+(x+4))

Simplify:

y = 2(2x+7)

y = 4x+14

This is slope - intercept form, not vertex form. Vertex form is for quadratic equations - this is a linear equation.

Answer (in slope - intercept form):

y = 4x+14
3 0
3 years ago
If a 4 x 16 rectangle has the same area as a square, what is the length of a side of the square?
Licemer1 [7]

Answer:

Option D. 8 units

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step 1

Find the area of rectangle

The area of rectangle is

A=(4)(16)=64\ units^2

step 2

Find the length side of the square with the same area of rectangle

The area of a square is

A=b^2

where

b is the length side of the square

we have

A=64\ units^2

substitute

64=b^2

take the square root both sides

b=8\ units

therefore

The length side of the square is 8 units

7 0
3 years ago
PLEASE HELP TIMED TEST!!!! I WILL REPORT YOU IF YOU GIVE ME A LINK!!
Elenna [48]

Answer:

x=40

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5 0
3 years ago
If the police have 9 suspects how many different ways can they select 5 for a lineup
kow [346]
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C(9, 5) =
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The 5 terms cancel. 

9*8*7*6 / 4*3*2 = 
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126

The above change is because 4*2 cancels the 8 in the numerator and 6/3 = 2
Therefore, the solution is 126. 
4 0
3 years ago
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