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slega [8]
4 years ago
15

−n+(−3)+3n+5 combine like terms

Mathematics
1 answer:
Allushta [10]4 years ago
3 0

Answer:

(-3+5)+(3n-n) = 2+2n

Step-by-step explanation:

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WILL MARK BRAINLIEST!!!!!!<br> #12 and 14❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️
mr Goodwill [35]

Answer:

Step-by-step explanation:

12)

Use the formula for simple interest, i = p r t, where i is the interest earned, r is the interest rate as a decimal fraction, and t is the time elapsed.  Here,

i = $25 = p(0.015)(2), or $25 = 0.03p.

Dividing both sides by 0.03, we get p = $25/0.03, or p = $833.33

14)  

Use the same formula:  $45.60 = $2,400(0.038)t.

                  $45.60                       $45.60

Then t = ------------------------- = -----------------------  = 2 (years)

                ($2,400)(0.038)               91.2

8 0
4 years ago
In math class, 4 students complete individual surveys to determine the percentage of high school teachers that have a second job
dlinn [17]

Answer:

Option D) B and C          

Step-by-step explanation:

we know that

To find out the percentage of high school teachers that have a second job, divide the number of teachers that have a second job by the total number of teachers

<em>Survey A</em>

\frac{28}{110}=0.2545

Convert to percentage

0.2545(100)=25.45\%

<em>Survey B</em>

\frac{27}{90}=0.3

Convert to percentage

0.3(100)=30\%

<em>Survey C</em>

\frac{21}{70}=0.3

Convert to percentage

0.3(100)=30\%

<em>Survey D</em>

\frac{32}{80}=0.4

Convert to percentage

0.4(100)=40\%

Compare the percentages

Surveys B and C have the same percentage

therefore

Surveys B and C show proportional results, because the ratio of the number of teachers that have a second job by the total number of teachers is equal (this number is the constant of proportionality k in a proportional relationship between two variables)

8 0
3 years ago
Geometry math question no Guessing and Please show work thank you
hichkok12 [17]

we will use formula

\theta=\frac{180(n-2)}{n}

where

theta is angle

n is number of sides

we are given

n=15

we can plug it

\theta=\frac{180(15-2)}{15}

now, we can solve for theta

\theta=\frac{60(15-2)}{5}

\theta=12*13

\theta=156

so,

option-D.........Answer

3 0
4 years ago
Help please!!!!!!!!!!!!!
fiasKO [112]

Answer:

<QPR = 98.5 degrees

Step-by-step explanation:

a line = 180 degrees

7x + 4 + 9x - 40 = 180

16x - 36 = 180

16x = 216

x = 13.5

<QPR = 7x + 4 = 7(13.5) + 4 = 98.5

5 0
3 years ago
What word describes the equal shares of the shape
timofeeve [1]
Quarters?
because there are four? and they're equal?
5 0
4 years ago
Read 2 more answers
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