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3 years ago

8

Explain when it might be more efficient to use the percent equation rather than the percent proportion.

1 answer:

Tamiku [17]3 years ago

4 0

In percent equation method , we transformed the number that we wanted to look for the percentage of into decimals and simply move the commas into two number on the right
If you get a hang on it, this method will be faster than the percent equation

hope this helps

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X=17-4y<br> y=x-2<br> answer by substitution

sashaice [31]

Answer:

x=5,y=3

Step-by-step explanation:

the first step is to decide whether you want to substitute y and find x, or substitute x and find y.

(it doesn't matter which way you will choose.If you do the math correctly you will get the correct answer,one way or another).

for example, let's substitute y into the first equation:

x=17-4*(x-2)

so now,we will organize the equation:

x+4x=17+8

5x=25/(÷5)

x=5

now we will substitute x with 5 in the second equation(or the first one,it doesn't matter)in order to find y:

y=5-2

y=3

3 0

3 years ago

What is the value of this expression? 4/15+3/5−2/3 Enter your answer in the box as a fraction in simplest form.

forsale [732]

Answer:

$\frac{4}{15} + \frac{3}{5} - \frac{2}{3}$

$\frac{4 \times 1}{15 \times 1} + \frac{3 \times 3}{5 \times 3} - \frac{2 \times 5}{3 \times 5}$

$\frac{4}{15} + \frac{9}{15} - \frac{10}{15}$

$\frac{4 + 9 - 10}{15}$

$\frac{13 - 10}{15}$

$\frac{3}{15}$

$\frac{1}{5}$

hope it helps you :)

have a great day

7 0

2 years ago

Read 2 more answers

I’m not sure what this is asking me to do?

Molodets [167]

Answer:

Step-by-step explanation:

-2 = 17

You need find what number that need to be in the blank spot

17 + 2 = 19

19 - 2 = 17

In the second question u need to find equal number

17 - 3 = 16 - 2

14 14

They need to be equal - =

19 - 6 = 18 - 5

13 13

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3 years ago

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Anarel [89]

Step-by-step explanation:

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2 years ago

A pair of boots costs $130. They are<br> on sale for $110.50. Find the percent<br> of change?

elixir [45]

Answer:

15% off

Step-by-step explanation:

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3 years ago