3 years ago

Approximate the square root of 500 to the nearest tenth. Show your work.

1 answer:

4 0

$\sqrt{500} \rightarrow \sqrt{5 * 10 * 10} \rightarrow 10\sqrt{5}$ This is an exact answer. the answer will be a bit larger than 20

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On Tuesday, 4 out of every 10 people who entered a store purchased something. If 8,800 people entered the store on Tuesday, how

Gala2k [10]

The correct answer is 3,520 people purchase something. Explanation: 4/10 = .4, so 8,880 x .4 = 3,520

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2 years ago

Find the slope of the line passing through the points (-5,5) and (-5,-8)

AysviL [449]

Answer:

Step-by-step explanation:

5-8 -3

----------=

-5--8 -3

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Hope this helps!

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3 years ago

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14 and 15, please :p explanation would also be appreciated!!

liraira [26]

14. B (4, -2)
15. I am not exactly sure about this one but I would say either A or B.

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2 years ago

Analyze the graph. Which inequality represents the

Anna007 [38]

Step-by-step explanation:

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2 years ago

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How many liters of 60% alcohol solution should be added to 40 liters of a 20% alcohol solution to make a 50% solution?

kolbaska11 [484]

Answer:

120 liters of 60% alcohol solution is needed

Step-by-step explanation:

Let's assume

x liters of 60% alcohol solution is added

so, we get solution as

$=\frac{60}{100}\times x$

$=0.6x$

we are given

40 liters of a 20% alcohol solution is

$=40\times\frac{20}{100}$

$=8$

so, total alcohol solution is

$=8+0.6x$

now, we can find total solutions

total solutions is

$=x+40$

now, it is making 50% solution

so, we get

$\frac{8+0.6x}{x+40} =\frac{50}{100}$

now, we can solve for x

$\left(8+0.6x\right)\cdot \:100=\left(x+40\right)\cdot \:50$

$800+60x=50x+2000$

$10x=1200$

$x=120$

So,

120 liters of 60% alcohol solution is needed

4 0

2 years ago