1 year ago

What is the sum of 2,480 - 170

Mathematics

2 answers:

Natalija [7]1 year ago

6 0

Answer:

2,310

Step-by-step explanation:

Vesna [10]1 year ago

6 0

2310

brainiest pls

thankyou

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Find the slope of the line graphed below.

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Answer:-1/2

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Can someone help me with this ASAP please I’m being timed !

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The second option (choice b)

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3 years ago

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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

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

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$10x=1200$

$x=120$

So,

120 liters of 60% alcohol solution is needed

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3 years ago