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Ganezh [65]
3 years ago
5

What is the number of possible combinations of 8 objects taken 6 at a time?

SAT
1 answer:
vladimir2022 [97]3 years ago
6 0

Answer:

28

Explanation:

8C6= 28

8= total 6= selected

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Option C- Most young voters favor Democratic candidates.

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3 years ago
How many liters each of a 50% acid solution and a 75% acid solution must be used to produce 90 liters of a 60% acid solution? (R
elena-14-01-66 [18.8K]

The numbers of liters that is needed is 40 liters of 25% solution and 40 liters of 65% solution.

<h3>What is the litters about?</h3>

Note that:

We take x = volume of 25% solution.

We take y = volume of 65% solution.

So, Equation of total volume:

x + y = 80

Hence the equation of amount of acid:

0.25x + 0.65y = 0.45(80)

0.25x + 0.65y = 36

Solve x + y = 80 for x.

x = 80 - y

Then Substitute into the second equation.

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x + 40 = 80

x = 40

Therefore, The numbers of liters that is needed is 40 liters of 25% solution and 40 liters of 65% solution.

Learn more about liters from

brainly.com/question/17435066

#SPJ1

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