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Solnce55 [7]
3 years ago
5

(PLZ FAST- 30 PTS)Which expressions are equivalent?

Mathematics
2 answers:
Digiron [165]3 years ago
5 0

Answer:

A. 3x-7y and -7y+3x

Step-by-step explanation:

Let x=1, y=2

3(1)-7(2)

3-14

-11

-7(2)+3(1)

-14+3

-11

Vera_Pavlovna [14]3 years ago
4 0
The answer is

3x-7y and -7y+3x
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Answer: Nancy spent $44.59 on 5.25 quarts of olive oil. What is the cost of one quart of olive oil? Round to the nearest cent.

$8.38 per quart

$8.49 per quart

$8.57 per quart

$8.92 per quart

Step-by-step explanation:

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2 years ago
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The area of section 1 is _____ square feet, the area of section 2 is _____ square feet, and the area of section 3 is _____ squar
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Answer:32 ft

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3 years ago
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Can someone show me how to do this?
Angelina_Jolie [31]
First, you know that 3/4 = .75. Now we can distribute. multipy -10*.75. Then multiply .75*2/5. Add those two answers together to get your final answer. 

4 0
3 years ago
The area of a rectangular wall of a barn is 85 square feet. Its length is 12 feet longer than the width. Find the length and wid
MaRussiya [10]

Answer:

Length = 17 feet, Width = 5 feet

Step-by-step explanation:

Given:

The area of a rectangular wall of a barn is 85 square feet.

Its length is 12 feet longer than the width.

Question asked:

Find the length and width of the wall of the barn.

Solution:

Let width of a rectangular wall of a barn = x

<u>As length is 12 feet longer than the width.</u>

Length of a rectangular wall of a barn = 12+x

As we know:

Area\ of\ rectangle=length\times breadth

85=(12+x)x\\\\85=12x+x^{2} \\

Subtracting both sides by 85

x^{2} +12x-85=0\\x^{2} +17x-5x-85=0\\Taking\ common\\x+(x+17)-5x(x+17)=0\\(x+17)(x-5)=0\\x+17=0, x-5=0\\x=-17,x=5

As width can never be in negative, hence  width of a rectangular wall of a barn = x = 5 feet

Length of a rectangular wall of a barn = 12+x=12+5=17\ feet

Therefore, length and width of the wall of the barn is 17 feet and 5 feet respectively.

                 

4 0
3 years ago
Find the area of a square with sides 17 centimeters long.
pickupchik [31]

Answer:

289 cm²

Step-by-step explanation:

Length (L) = 17 cm

Area of a square

= L²

= (17cm)²

= 289 cm²

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3 years ago
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