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Nataliya [291]
3 years ago
8

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

Mathematics
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

3 0
3 years ago
. Which sentence contains a proper noun? Users of electronic databases can check a library’s catalog to see which books are avai
Anarel [89]

Step-by-step explanation:

A proper noun is a specific name for a particular person, place, or thing.

The Internet is a communication network that gained popularity in the 1990s.

<h2>A proper noun should always start with a capital letter, whether at the <u>s</u><u>t</u><u>a</u><u>r</u><u>t</u><u> </u><u>o</u><u>r</u><u> </u><u>m</u><u>i</u><u>d</u><u>d</u><u>l</u><u>e</u><u> </u><u>o</u><u>f</u><u> </u><u>a</u><u> </u><u>sentence</u><u>.</u></h2>
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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:

mark brainliest please

6 0
3 years ago
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