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Ksenya-84 [330]
2 years ago
9

4x - 1 = -13 show the work please

Mathematics
2 answers:
asambeis [7]2 years ago
8 0

Answer:

x = -3

Step-by-step explanation:

Add 1 to both sides to, this gives you 4x = -12. then divide both sides by 4, which would give you x = -3.

m_a_m_a [10]2 years ago
5 0

Answer:

x = -3

Step-by-step explanation:

4x - 1 = -13

add 1 to each side

4x = -12

x = -3

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7 lb will cover an area of 1 square foot, while 315 lb will cover an area of 45 square feet.

From given question,

252 lb = 36 ft²             ..........(1)

The number of pound for an area of 1 square foot is calculated as follows:

x = 1 ft²                       .......(2)

The area and the amount of gravel are illustrations of proportions.

From (1) and (2) we get an equation,

⇒ x × 36 = 252 × 1

⇒ x = 252/36

⇒ x = 7 lb

We need to find the area that could be covered with 315 lb of gravel

The area to be covered with 315 lb gravel is calculated as follows:

315 lb = y               ............(3)

From (1) and (3) we get an equation,

⇒ y × 252 = 36 × 315

⇒ y = 45 ft²

Therefore, 7 lb will cover an area of 1 square foot, while 315 lb will cover an area of 45 square feet.

Learn more about the proportions here:

brainly.com/question/13114933

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4 0
1 year ago
Timothy brought in brownies for his class on his birthday.
IgorC [24]

Answer:

Incomplete problem - reword

Step-by-step explanation:

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2 years ago
What is 0.05 repeating as a fraction ?
grin007 [14]
This is the best I got Require to make 2 equations with the same repeating part and subtract them to eliminate the repeating part.

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To obtain the same repeating part after the decimal point need to multiply by 10

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It is important to obtain 2 equations in x, where the recurring part after the decimal points are exactly the same.

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FrozenT [24]

Answer:

1. 392

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3. 12x^{2} - 5x -2

Step-by-step explanation:

1. 7×8 + 3×8×14 = 56 + 336 = 392

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3. 12x^{2} + 3x - 8x - 2 = 12x^{2} -5x-2

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3 years ago
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dezoksy [38]

Answer:

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Step-by-step explanation:

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