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Sonja [21]
3 years ago
6

The perimeter of a square is given as 8x+20. Write two different expressions for the perimeter. Use factoring to write one of th

e expressoins. Are the expressions equivalen? Explain
Mathematics
1 answer:
sveticcg [70]3 years ago
8 0

Answer:

P = 4(2x + 5)

P = (2x + 5)+(2x + 5)+(2x + 5)+(2x + 5)

Step-by-step explanation:

Given that:

Perimeter of square = 4 * s

Where s = side length

If perimeter, P = 8x + 20

Then,

4s = 8x + 20

Divide both sides by 4

4s / 4 = (8x + 20) / 4

s = 2x + 5

P = 4s

P = 4(2x + 5)

Or

P = 2x + 5 in 4 places

P = (2x + 5)+(2x + 5)+(2x + 5)+(2x + 5)

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erica [24]

Answer:  Approximately 96 square feet

======================================================

Work Shown:

1 ft = 30 cm

1 ft = (5*6) cm

1 ft = 5*(6 cm)

1 ft = 5*(1 board width)

1 ft = 5 board widths

12*(1 ft) = 12*(5 board widths)

12 ft = 60 board widths

12 ft = 1 full wall length

The wall is 12 feet horizontally across and 8 feet tall, so its estimated area is 12*8 = 96 square feet approximately. This is approximate because of the fact we used the approximation of 1 ft = 30 cm.

7 0
3 years ago
From the set (33, 15, 12), use substitution to determine which value of x makes the equation true.
zepelin [54]
X=12 because 3 times 12 equals 36. if you divide by 3 on both sides you would be left with that
8 0
4 years ago
You buy tomato sauce for $0.37 per ounce. One portion of potato gnocchi requires 2 ounces of tomato sauce. How much does the sau
Novay_Z [31]

Answer:

$0.74 = 74 cents

Step-by-step explanation:

The cost of one ounce of tomato = $0.37

1 portion of potato gnocchi requires 2 ounces of tomato sauce.

To find the cost of one portion of the potato gnocchi, we have to simply find the cost of 2 ounces of tomato sauce.

That is:

Cost = 2 * 0.37 = $0.74

Hence, one portion of potato gnocchi costs $0.74

Since $1 = 100 cents, the cost in cents will be:

0.74 * 100 = 74 cents

6 0
3 years ago
. Multiple Choice Let y = uv be the product of the functions u
Daniel [21]

Answer:

would be glad to help but im not suree

Step-by-step explanation:

6 0
2 years ago
State the domain of the rational function. (2 points)
ELEN [110]

Answer:

All real numbers except 4.

Step-by-step explanation:

The given function is

f(x)=\frac{6}{4-x}


This is a rational function.


The domain of a rational function is all real numbers except values that will make the denominator zero.


The denominator of the given function is 4-x.


So the domain is all real numbers except

4-x=0

We solve for x to obtain,

4=x or x=4.


Therefore the domain is all real numbers except x=4.

8 0
3 years ago
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