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sattari [20]
2 years ago
13

Which equation has a solution of n = 4?

Mathematics
2 answers:
Klio2033 [76]2 years ago
5 0

Step-by-step explanation:

  1. 7n=28
  2. divide both side by 7
  3. n=28\7
  4. n=4
Allushta [10]2 years ago
4 0

Answer:

D. 7n = 28

Step-by-step explanation:

Let's substitute 4 for n in each equation to check if it the resulting equation is correct:

6+n=24\\ 6+4=24\\ 10\neq 24\rightarrow \text{Incorrect!}

5n=54\\5(4)=54\\20\neq54\rightarrow\text{Incorrect!}

12-n=16\\12-4=16\\8\neq16\rightarrow\text{Incorrect!}

7n=28\\7(4)=28\\28=28\rightarrow\text{Correct!}

Therefore the answer is D

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102

Step-by-step explanation

39'+39'=78'

180-78=102

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What is the mean of data set 32 25 25 32 32 10 -10 25​
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Answer:

21.375.

Step-by-step explanation:

The mean of an equation is the sum of all total numbers in the set divided by the total numbers in the set.

32 + 25 + 25 + 32 + 32 + 10 + -10 + 25 = 171.

171/8 = 21.375

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3 years ago
Susanna used 2 3/8 cups of peaches and 1 2/8 cups of cherries to make a fruit cocktail. How many more cups of peaches than cherr
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Kurt and Maria's high school is having a newspaper drive.The goal is to collect 3,585 pounds of newspapers. So far, 21% of the g
Novay_Z [31]

Options:

Who is right, and why?

a. Neither Kurt nor Maria is right, because 3,500 should be used instead of 3,600.

b. Kurt is right, because finding 1/5 of 3,600 is not a good way to approximate 21% of 3,585.

c. Maria is right, because finding 10% of 3,600 and multiplying the result by 2 is not a good way to approximate 21% of 3,585.

d. Both Kurt and Maria are right, because 3,585 should be rounded up to 3,600, and 21% of this amount can be approximated by either finding 10% of 3,600 and multiplying the result by 2 or by finding 1/5 of 3,600.

Answer:

d. Both Kurt and Maria are right, because 3,585 should be rounded up to 3,600, and 21% of this amount can be approximated by either finding 10% of 3,600 and multiplying the result by 2 or by finding 1/5 of 3,600.

Step-by-step explanation:

Given

Goal = 3585

Collected = 21\%

Kurt= 10\% * 3600 * 2

Maria = \frac{1}{5} * 3600

Required [Missing from the question]

Who is correct and why?

First, we calculate the actual amount collected.

Actual = Collected * Goal

Actual = 21\% * 3585

Actual = 752.85

Actual = 753 --- approximate

Next, determine the estimate (round 3585 to 3600 and 21% to 20%)

Estimate = 20\% * 3600

Estimate = 720

Next, calculate Kurt and Maria's estimates

Kurt= 10\% * 3600 * 2

Kurt = 720

Maria = \frac{1}{5} * 3600

Maria = 720

<em>Hence, Kurt and Maria are correct because of option (d)</em>

7 0
3 years ago
Which equation represents the line that is perpendicular to the graph
ella [17]

Answer:

Here look at this graph this is your answer.

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