PLS HELP ME WITH THIS ALGEBRA!

Mathematics

1 answer:

artcher [175]3 years ago

6 0

Answer:

120 g

Step-by-step explanation:

A salt solution contains 10% salt and weights 80g.

Salt content of the solution is:

80*0.1 = 8 g

4% solution has 8 g salt, total solution is:

0.04x = 8
x = 8/0.04 = 200 g

Water to be added:

200 - 80 = 120 g

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Can someone plz answer this correctly and quickly.

rosijanka [135]

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8/2 = 4

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$4^{2}$ = 16

3. Multiply that by pi.

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4. Multiply that by the height.

50.24 * 20 = 1004.8

5. Now find 60% of that.

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2 years ago

From a group of 12 students, we want to select a random sample of 4 students to serve on a university committee. How many combin

borishaifa [10]

Answer:

495 combinations of 4 students can be selected.

Step-by-step explanation:

The order of the students in the sample is not important. So we use the combinations formula to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.