20 is what percent of 50

Answers

Answer 1

Answer: 20 percent of 50 is 10

Answer 2

Answer: 20/ of 50 = 0.4 = 40%

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How much water must be evaporated from 64 ounces of a 2% salt solution to make a 10% salt solution?

Answers

$64 * 2\%=64 * 0.02=1.28$
64 ounces of a 2% salt solution contains 1.28 ounces of salt and thus 62.72 ounces of water.

The mass of the 10% solution is (x+1.28), where x is the mass of water.
1.28 divided by (x+1.28) must be equal to 10%.
$(1.28)/(x+1.28) * 100\%=10\% \n(1.28)/(x+1.28) * 100=10 \n1.28 * 100=10(x+1.28) \n128=10x+12.8 \n115.2=10x \nx=11.52$

The 10% solution contains 11.52 ounces of water.
$62.72-11.52=51.2$

51.2 ounces of water must be evaporated.

A number x is no more than 9 units away from 8. Write and solve an absolute-value inequality to show the range of possible values of x.|x − 8| ≤ 9
−1 ≤ x ≤ 17

|x + 8| ≤ 9
−17 ≤ x ≤ 1

|x − 9| ≤ 8
1 ≤ x ≤ 17

|x + 9| ≤ 8
−17 ≤ x ≤ −1

Answers

Answer:

Option A is right

Step-by-step explanation:

Given that a number x is no more than 9 units away from 8

This implies that number can be either larger than 8 by less than 9 units or smaller than 8 by less than 9 units.

Difference between x and 8 is at most 9.

We represent in absolute value as

$|x-8|\leq 9\n-9\leq x-8\leq 9\n-1\leq x\leq 17$

Hence option A is right

The answer is a (|x - 8| ≤ 9 and -1 ≤ x ≤ 17) Because the difference between x and 8 can't be greater than 9, but it can be less than or equal to it, and because the range that x could be would be -1 to 17, since 8 + 9 = 17 and 8 - 9 = -1.

What is the area of a rectangle with measurement of 17 ft 8 in by 11ft 8in

Answers

you do 17 ft 8 inches multiplied by 11 feet 8 inches which equals 62.8227 feet because the area of a rectangle is base times height

Simplify (3x2 − 3 + 9x3) − (4x3 − 2x2 + 16).x3 − 5x2 + 25
−x3 + x2 − 25
5x3 + x2 + 13
5x3 + 5x2 − 19

Answers

Answer: 5x³ + 5x² - 19

Answer:

The answer is D

Step-by-step explanation:

Let's simplify step-by-step.

3x2−3+9x3−(4x3−2x2+16)

Distribute the Negative Sign:

=3x2−3+9x3+−1(4x3−2x2+16)

=3x2+−3+9x3+−1(4x3)+−1(−2x2)+(−1)(16)

=3x2+−3+9x3+−4x3+2x2+−16

Combine Like Terms:

=3x2+−3+9x3+−4x3+2x2+−16

=(9x3+−4x3)+(3x2+2x2)+(−3+−16)

=5x3+5x2+−19

Answer:

=5x3+5x2−19

the length of a rectangle is 3 more than the width. if the area is 40 square inches, what is an equation to find the area and what is the length of the rectangle

Answers

Answer:

5 x 8 = 40 square cm

Step-by-step explanation:

I do not understand how to get the answer

Answers

OK so you have x and 16 and 14 so you have to use the formula a^2 + b^2 = c^2 to find your answer

if you look at your triangle the long side is 16 the middle side is 14 is you subtract the 14 from 16 y=2

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