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EleoNora [17]
2 years ago
7

Bob the builder is making 480 kg of concrete mix

Mathematics
2 answers:
Marina CMI [18]2 years ago
6 0

Answer:

180 kg

Step-by-step explanation:

The ratio is

cement : sand : gravel

    1       :    3     :    4

If he used 1 kg cement, 3 kg sand, and 4 kg gravel, he'd get 8 kg of concrete.

He wants to make 480 kg of concrete.

480/8 = 60

He needs 60 times more concrete than the numbers in the ratio.

60 * 3 kg = 180 kg

Answer: 180 kg

svetoff [14.1K]2 years ago
4 0

Answer:

If sand is 3 in the ratio, it is 180kg

Step-by-step explanation:

480/8=60  60 times 3 is 180

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Answer:

$175

Step-by-step explanation:

let the original price be x

if 1/5 is off the price then the sells is at 4/5

4/5 of x = 140

thus,

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4x = 140*5

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2 years ago
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Option B.

Step-by-step explanation:

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3 years ago
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Using the slope and the y intercept, graph the line represented by the following equation.
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Beforehand let me apologize for my sloppy handwriting. I'm a lefty, so please deal with me. . Anyway, the equation you listed didn't really have a x, because a linear equation is y= mx+b, and anything with x is the slope. But I did see y and a number on one side, so I'm like maybe I can get these two alone. So here's what I did:

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Next,
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I really do hope this helps you, if not message me. I'll be happy to help, and again I'm sorry for my handwriting!



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