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igomit [66]
3 years ago
5

When 5(2x + 3) − (x + 4) is simplified, the result is:

Mathematics
2 answers:
kow [346]3 years ago
7 0

Answer:

=10x+15-x-4

=10x-x+15-4

=9x+11

frozen [14]3 years ago
5 0

Answer:

9x+11

Step-by-step explanation:

Use the disribuitive law which is -(a+b)=-a-b:

-(x+4)=-x-4

=5(2x+3-x-4

=10x+15-x-4

=9x+11

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Answer:

Step-by-step explanation:

 

We first need to define a couple of variables.  Let s = the cost of 1 squash and z = the cost of 1 zucchini.

 

Now lets translate the words into algebra:

 

"The cost of 5 squash and 2 zucchini is $1.32"  ===>  5s  +  2z  =  1.32

 

"Three squash and 1 zucchini cost $0.75"  ===>   3s  +  z  =  0.75

 

There are several ways to solve systems of equations.  Let's use substitution.  We can find what z equals in terms of s by manipulating the second equation:

 

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Now lets substitute (-3s + 0.75) into the first equation for z, then solve for s:

 

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Can you handle it from here?

 

(Hint: Once you have solved for s, you can substitute that value back into either of the equations and solve for z.)

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