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mr Goodwill [35]
3 years ago
15

How to solve 11n+5=13n

Mathematics
2 answers:
ch4aika [34]3 years ago
5 0
The answer is 5/2 (fraction)
ANTONII [103]3 years ago
5 0
11n + 5 = 13n   Subtract 11n from both sides
         5 = 2n    Divide both sides by 2
         \frac{5}{2} = n     Switch the sides to make it easier to read
         n = \frac{5}{2}

Check your answer:

11n + 5 = 13n   Substitute n for \frac{5}{2}
11(\frac{5}{2}) + 5 = 13(\frac{5}{2})   Simplify
\frac{55}{2} + \frac{10}{2} = \frac{65}{2}   Add
\frac{65}{2} = \frac{65}{2}
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6x + 7 = 8x - 17
6x- 8x = -17 - 7
-2x = -24 • divide both sides by -2
Thefore x = 12
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3 years ago
The choir director set up chairs for the concert with an equal number of rows and columns.
Dima020 [189]
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to be a perfect square, and the number in each row and each column to be the
square root of the total.  Since the total is 81, the number in each row and column
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5 0
4 years ago
Read 2 more answers
A​ student's course grade is based on one midterm that counts as 20​% of his final​ grade, one class project that counts as 20​%
Rus_ich [418]

Answer:

His overall final​ score is 80.1.

His letter grade is a B.

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To find his grade, we multiply each grade by it's weight.

Grades and weights:

His midterm score is 64​. The midterm counts 20% = 0.2.

His project score is 80​. The project score counts 20% = 0.2.

His homework score is 94. The homework score counts 30%.

His final exam score is 77. It counts 30%.

What is his overall final​ score?

64*0.2 + 80*0.2 + 94*0.3 + 77*0.3 = 80.1

His overall final​ score is 80.1.

What letter grade did he earn​ (A, B,​ C, D, or​ F)?

At least 80 but less than 90 is a​ B. He scored 80.1, so his letter grade is a B.

5 0
3 years ago
Question 8 Samples of rejuvenated mitochondria are mutated (defective) in 2% of cases. Suppose 17 samples are studied, and they
Murrr4er [49]

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Step-by-step explanation:

6 0
3 years ago
ITS URGENT PLEASE HELP Which equation represents the line that is parallel to y=3/7x+11 and passes through (-21,42)?
Pepsi [2]

Answer:

y = 3/7x + 51

Step-by-step explanation:

y = 3/7x + 11 is parallel to the line so it means that both of their gradient are same so:

y = mx + c

m= gradient point = (-21 , 42)

= 3/7

now we sub the m and the point into the formula which is y= mx+c because we should find the c first then we can find the equation of the line:

42 = 3/7 (-21) + c

42 = -9 + c

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c = 51

now you hv to rewrite again the equation become y= 3/7x + 51

So now your final answer is : y = 3/7x +51

3 0
3 years ago
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