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3 years ago

Explain what is a SYSTEM OF LINEAR EQUATIONS?

1 answer:

5 0

Is just a set of two or more linear equations. In two variables (x and y) , the graph of a system of two equations is a pair of lines in the plane.

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A purple paint is made by mixing 15oz of of red paint,and 5oz of boue paint. What percent of the paint is blue paint.

ZanzabumX [31]

Answer: 25%

Step-by-step explanation:

$\dfrac{\text{blue paint}}{\text{total paint}}=\dfrac{5}{5 + 15}\quad =\dfrac{5}{20}\bigg(\dfrac{5}{5}\bigg)\quad =\dfrac{25}{100}\quad =\large\boxed{25\%}$

4 0

3 years ago

Gabi has earned $54 babysitting the past two days. She worked 1 3/4 hours yesterday and 4 1/4 hours today. If Gabi is paid the s

Softa [21]

Answer:

$9 an hr.

Step-by-step explanation:

4 1/4 + 1 3/4 = 6

= 6hrs combined.

$54 = 54/6 = 9

=$9 an hr.

4 0

3 years ago

Factor the polynomial y2 + 12y -36

liberstina [14]

(y+6)2 i’m pretty sure

5 0

3 years ago

Read 2 more answers

1.) A school wants to have a metal gate placed around it. However they only want to cover three sides of the school and they onl

kogti [31]

Answer:

I only have an answer to number 2 but the dimensions are 20 and 120.

Step-by-step explanation:

well you can remove the zeroes and factor either the 28 or 24. (I think 24 is the best) so when you factor it you get 2 and 12 because 2 x 12 is 24 and 2 + 2 + 12 + 12 is 28. Then add the zeroes and you have your dimensions. I hope that explanation helped with number 2.

8 0

3 years ago

larisa86 [58]

A. Every month Population will increase by a factor of 0.84%.

B. Every 3 months Population will increase by a factor of 2.5%.

C. Increase in population in every 20 months is 10% + 6.72% = 16.72%.

Step-by-step explanation:

Here, we have number of employees in a company has been growing exponentially by 10% each year. So , If we have population as x in year 2019 , an increase of 10% in population in 2020 as $x + \frac{x}{100}\times10$ which is equivalent to $\frac{11x}{10}$ .

A.

For each month: We have 12 months in a year and so, distributing 10% in 12 months would be like $\frac{10}{12} = 0.84$ . ∴ Every month Population will increase by a factor of 0.84%.

B.

In every 3 months: We have , 12 months in a year , in order to check for every 3 months $\frac{12}{3} = 4$ and Now, Population increase in every 3 months is $\frac{10}{4} = 2.5$ . ∴ Every 3 months Population will increase by a factor of 2.5%.

C.

In every 20 months: We have , 12 months in a year in which increase in population is 10% . Left number of moths for which we have to calculate factor of increase in population is 20-12 = 8. For 1 month , there is 0.84% increase in population ∴ For 8 months , 8 × 0.84 = 6.72 %.

So , increase in population in every 20 months is 10% + 6.72% = 16.72%.

5 0

4 years ago