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Umnica [9.8K]
3 years ago
15

3(x+4)-1=-7 plz help

Mathematics
2 answers:
tatiyna3 years ago
5 0

Answer:

x = -6

Step-by-step explanation:

3(x+4)-1=-7

Add 1 to each side

3(x+4)-1+1=-7+1

3(x+4)=-6  

Divide by 3

3/3(x+4)=-6/3

x+4 = -2

Subtract 4 from each side

x+4-4 = -2-4

x = -6

baherus [9]3 years ago
4 0

Answer:

<h2>- 6</h2>

Step-by-step explanation:

3(x + 4) - 1 = - 7

Distribute 3 through the parentheses

3x + 12 - 1 =  - 7

Calculate the difference

3x + 11 =  - 7

Move constant to R.H.S and change it's sign

3x =  - 7 - 11

Calculate

3x =  - 18

Divide both sides of the equation by 3

\frac{3x}{3}  =  \frac{ - 18}{3}

Calculate

x =  - 6

hope this helps

Best regards!!

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You want to purchase a new car in 5 years and you anticipate the cost of the car to be $55,000. You are given an investment plan
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Wow - that is an unusual calculation.  You'll need a formula for the monthly payment of a monthly annuity, and it is located here:
http://www.1728.org/annuity3.htm  (see formula 2)
You'll find THAT page and THIS page very helpful:
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rate = rate / 1,200
rate = <span> <span> <span> 0.005166666667 </span> </span> </span>
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monthly amount = [Total] / ([(1 + rate)^(n+1) -1] / [rate]) -1

monthly amount =
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</span>
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Yes, it's just that "simple". LOL


5 0
4 years ago
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Standerd form example
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3 0
4 years ago
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Answer:

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