3 years ago

Find the approximate area of the shaded part of the circle. Use 3.14 for π

Mathematics

1 answer:

natta225 [31]3 years ago

6 0

Its c i use the calcuatior

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Step-by-step explanation:

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3 years ago

Jessica had 140 to spend on 8 books. After buying them she had 12 dollars. How much did each book cost?

Rashid [163]

Answer:

each book was $16

Step-by-step explanation:

140-12=128 divided by 8 = 16

hope this helps!

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3 years ago

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

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$=0.6x$

we are given

40 liters of a 20% alcohol solution is

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

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now, we can find total solutions

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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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$10x=1200$

$x=120$

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3 years ago

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2 years ago