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Anna007 [38]
3 years ago
6

PLZ HELP ME

Mathematics
1 answer:
creativ13 [48]3 years ago
8 0

Answer:

2x + 1200

Step-by-step explanation:

.5x + 300 \\ 3(.5x + 300)  = 1.5x + 900\\ 2(1.5x + 900) = 3x + 1800 \\  \frac{2}{3} (3x + 1800) = 2x + 1200

Each new line represents the change stated in the question.

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Y is inversely proportional to V1+x.<br> When x = 8, y = 2.<br> Find y when x = 15.
murzikaleks [220]

Answer:

y = 1.5

Step-by-step explanation:

Given x is inversely proportional to \sqrt{1+x} , then the equation relating them is

y = \frac{k}{\sqrt{1+x} } ← k is the constant of proportion

To find k use the condition when x = 8, y = 2

2 = \frac{k}{\sqrt{1+8} } = \frac{k}{\sqrt{9} } = \frac{k}{3} ( multiply both sides by 3 )

6 = k

y = \frac{6}{\sqrt{1+x} } ← equation of proportion

When x = 15 , then

y = \frac{6}{\sqrt{1+15} } = \frac{6}{\sqrt{16} } = \frac{6}{4} = \frac{3}{2} = 1.5

6 0
2 years ago
Workers are loading boxes onto a truck. So far, they have loaded 48 boxes onto the truck
Talja [164]

Answer:

1,200 total on truck

Step-by-step explanation:

48=4% loaded on a truck and they have 96% left to load

So set up a proportion and it should look like this

48 over x = 4 over 100

48/x=4/100

Do cross multiplication 100×48= 4,800÷ 4 = 1,200 total on truck

=1,200 total on truck

Hope this helps, have a nice day! :D

5 0
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2/5 as a decimal and percent
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Decimal: .4
Percent: 40%
7 0
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