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Sonja [21]
3 years ago
15

2(2x + 3)^2– 7(2x + 3) - 4

Mathematics
1 answer:
Lana71 [14]3 years ago
5 0

Answer:

Solution in photo

Step-by-step explanation:

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Two feet is what percent of a yard? And please explain how I find the answer
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Percent means parts out of 100
x%=x/100

1 yard=3 feet
2 feet is what percent of 3 feet?
2=x% times 3
2=x/100 times 3
2=3x/100
multiply both sides by 100
200=3x
divide both sides by 3
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answer is 66.66666%
4 0
3 years ago
Which of the following is the solution for 9<=1-4x<21
frozen [14]

Answer:

-5 < x <=-2

Step-by-step explanation:

9<=1-4x<21

Subtract 1 from each side

9 -1<=1-1-4x<21-1

8 <= -4x < 20

Divide each side by -4.  That means to flip all inequalities

8/-4 >= -4x/-4 >20/-4

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3 years ago
A number added to itself equals 5 less than the number
Nastasia [14]

Answer:

The number is -5.

Step-by-step explanation:

x+x=x-5

2x=x-5

x-2x=5

-x=5

x=-5

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3 years ago
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2) A pair of socks is purchased for $3.00 it is then sold for $4.00 What is the percent of change that
Veronika [31]

Answer:

5% change

Step-by-step explanation:

4 0
3 years ago
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