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Tju [1.3M]
3 years ago
14

What is the value of n?5n + 8=30A 3 1/5B 4 2/5C 6D 7 3/5

Mathematics
1 answer:
storchak [24]3 years ago
8 0

<u>Answer:</u>

B

<u>Explanation:</u>

<u>Solve for n:</u>

Subtract 8 on both sides.

5n + 8 = 30

       -8    -8

Divide by 5 on both sides.

5n = 22

---     ----

5        5

Getting a solution of 4 2/5.

n = 4 2/5

<u>Check:</u>

5(4 2/5) + 8 = 30

22 + 8 = 30

30 = 30

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Which of these examples is an error of addition by one?
N76 [4]

Answer:

The correct answer is:

A. 27,465 +52,534 = 79,899

Step-by-step explanation:

Given are the options for addition

We have to check each addition one by one

So,

A. 27,465 +52,534 = 79,899

This option is the example of error of addition by one. The answer should have been 79,999. Hence there is an error in addition ..

Hence, option a: 27,465 +52,534 = 79,899  is the correct answer ..

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3 years ago
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An on-demand movie company charges $2.95 per movie plus a monthly fee of $39.95. Which expression represents the yearly
MakcuM [25]

Answer: 2.95x+39.95(12)

Step-by-step explanation:

Hi, to answer this question we have t write an expression with the information given:

The yearly cost for x movie rentals is equal to : the product of the cost of each movie (2.95) and the number of movies (x) ;plus the product of the monthly fee (39.95) and the number of months in a year (12)

Mathematically speaking:

2.95x+39.95(12)

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Choose the correct simplification of the expression (2x^2y^6z^5)(5x^4y^5z^3)
IgorLugansk [536]
<span>2 x^2 y^6 z^5
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the test scores for 10 students were 61,67,81,83,87,88,89,90,98, and 100. which frequency table represents this data set?
lana66690 [7]

Answer:

below only shows up once

Step-by-step explanation:

mark: tally:  frequency:

61  I           I

67   I               I

81       I               I

83         I            I

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88             I         I

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3 years ago
The annual revenue of Amazon.com rose from approximately $10.7 billion in 2006 to $34.2 billion in 2010. Use this information to
Sati [7]
1) Linear model

R(t) = y = at + b

Where t is the year - 2000 (year since 2000)

For year 2006, t = 6; for year 2010, t = 10

Then:

1) 10.7 = a*6 + b
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Subtract (1) from (2)

34.2 - 10.7 = 10a -6a

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