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Dmitry [639]
3 years ago
11

You scored 31 out of 40 points on a test. What percent did you get?

Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
5 0

Answer:


Step-by-step explanation:

Divide 31 by 40. Since you get .775, you make it a percent and it's 77.5% correct.

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Adding and subtracting rational expressions
uysha [10]

Answer:

Step-by-step explanation:

When adding or subtracting rational expressions, it is easiest to find a common denominator.

Ex.

\frac{x+2}{x-5} + \frac{x-7}{x}  \\

The common denominator would be x(x-5)

We need to make both fractions have that denominator

\frac{(x+2)(x)}{(x-5)x} + \frac{(x-7)(x-5)}{x(x-5)}  \\\frac{(x^2+2x)+(x^2-12x+35)}{(x^2-5x)}\\\frac{2x^2-10x+35}{(x^2-5x)}

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4 years ago
I need help I’m taking a test .
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Answer:

It's third one thank me later

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3 years ago
oscar uses place value to divide 63.81 by 9. his steps are shown below what mistake does oscar make PLZ HELPPPP
ELEN [110]

Answer:

He put the wrong answer in Step 2, he put the put the decimal in the wrong place.

Step-by-step explanation:

5 0
3 years ago
What is the value of each variable 45 h and 9
Ivan

Answer:

How many variables?

Step-by-step explanation:

6 0
3 years ago
Nathan invested $3,500 in an account paying an interest rate of 3.5% compounded
Gnom [1K]

Answer:

\text{Compounded Quarterly:}

Compounded Quarterly:

A=P\left(1+\frac{r}{n}\right)^{nt}

A=P(1+  

n

r

​  

)  

nt

 

Compound interest formula

P=3500\hspace{35px}r=0.035\hspace{35px}t=19\hspace{35px}n=4

P=3500r=0.035t=19n=4

Given values

A=3500\left(1+\frac{0.035}{4}\right)^{4(19)}

A=3500(1+  

4

0.035

​  

)  

4(19)

 

Plug in values

A=3500(1.00875)^{76}

A=3500(1.00875)  

76

 

Simplify

A=6786.05963486

A=6786.05963486

Use calculator

A\approx 6800

<h2>A≈6800</h2>

Step-by-step explanation:

3 0
3 years ago
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