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3 years ago

What is the answer to number 7 and how did you solve it?!

Mathematics

2 answers:

gavmur [86]3 years ago

7 0

Since only 1/10 of her income applies to all 5 charities, it would make sense to assume that 1/10 is strictly donated to the charities. Moreover, because we assume that, we must then divide 1/10 by 5, so that way we can get the amount that is donated to each charity. So you should get, 1/50 is equally donated to each charity out of the 1/10 of her income that is donated. Hopefully this helps.

Ad libitum [116K]3 years ago

3 0

All you have to do is multiply 1/10 * 5

the answer is 5/10
if u simplify 5/10 the final answer will be 1/2

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pychu [463]

6√3

Step-by-step explanation:

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2 years ago

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3 years ago

Find an equivalent mixed number for the decimal number. 16.3

timofeeve [1]

Answer:

16 3/10

Step-by-step explanation:

Think about what fraction become .3 when put into a calculator

that's a 3 in the tenths place in the decimal system so the fraction would be 3/10. Then finally add on the 16

*an aside if this is wrong it it is possible that they have rounded 1/3 to one decimal place. (1/3 is usually .33333 repeating)

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3 years ago

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Please help Explanation will be appreciated thanks,

Genrish500 [490]

Answer: A; 6.3%

Step-by-step explanation:

Problem 1

For the first problem, we first want to find y so that we can plug it into the expression.

We can use elimination method for the system of equations to solve.

3x+3y=21

3x-y=5

We subtract both equations to eliminate x.

4y=16 [divide both sides by 4]

y=4

Now that we know y, we can plug it into the expression.

$\frac{4}{2} -3$ [divide]

$2-3$ [subtract]

$-1$

We know that the answer is A.

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Problem 2

For the second problem, we need to know how to calculate percent error. The formula for precent error is $\frac{|measured-exact|}{exact} *100%$ . We know that the exact value is 80 because the buyer was supposed to given 80. 75 is the measured value because that was what the buyer was given.