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FrozenT [24]
3 years ago
7

Please help and explain how you did these problems :) help me with 14,16,18,20,22

Mathematics
2 answers:
igor_vitrenko [27]3 years ago
7 0
You do the inverse operation for each one. so for #14, since 25g is multiplication you divide it by 25 to cancel it out, then you divide -175 by 25 which gives you -7
Deffense [45]3 years ago
6 0
G=-7
X=-17
W=24
T=-7
E=_500
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Find the third number if their average is 6 and two of them are 6 and 7​
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Answer:

5

Step-by-step explanation:

If their average is 6 and there are three numbers in total, the total sum of the three numbers would be:

6×3 = 18

You know that two of them is 6 and 7, so you can find the last number easily.

18-6-7 = 5  

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Aneesha travels at a rate of 50 miles per hour. Morris is traveling 3 feet per second less than Aneesha. Which is the best estim
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If Aneesha travels at a rate of 
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and  1mile=5280ft,     therefore 50 miles = 264000 ft
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3 years ago
Solve the system of equations
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Step-by-step explanation:

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Solve for y <br> 7+4y=7-5y+54
Orlov [11]

Answer:

Step-by-step explanation:

7+4y=7-5y+54

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14. A rectangle has a width described by the expression (x2 + 2x – 15)/x and a length described by the expression
tensa zangetsu [6.8K]

Answer:

The answer to your question is Perimeter = [4x³ + 14x² + 50x - 150] / x(5 + x)

Step-by-step explanation:

Data

Width = (x² + 2x - 15)/x

Length = (3x² + 4x)/ (5 + x)

Process

1.- Write the formula for the perimeter of a rectangle

Perimeter = 2W + 2L

2.- Substitution

Perimeter = 2(x² + 2x - 15)/x + 2(3x² + 4x)/(5 + x)

3.- Simplification

Perimeter = (2x² + 4x - 30)/x + (6x² + 8x)/(5 + x)

4.- Sum the fractions

Least common factor = x(5 + x)

Perimeter = [(2x² + 4x - 30)(5 + x) + (x(6x² + 8x)] / x(5 + x)

-Simplification

Perimeter = [10x² + 20x - 150 - 2x³ - 4x² + 30x + 6x³ + 8x²] / x(5 + x)

Perimeter = [4x³ + 14x² + 50x - 150] / x(5 + x)

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