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icang [17]
2 years ago
7

How to find the mean of 2, 7, 6, 1, 9, 2, 4, 9

Mathematics
1 answer:
Lady_Fox [76]2 years ago
6 0

Answer:

5

Step-by-step explanation:

Add the numbers together, then divide that by the amount of numbers

(2 + 7 + 6 + 1 + 9 + 2 + 4 + 9)/8

40/8 = 5

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A force of 60 N is used to stretch two springs that are initially the same length. Spring A has a spring constant of 4 N/m, and
goblinko [34]

Answer:

D:Spring A is 3 m longer than spring B because 15 – 12 = 3.

Step-by-step explanation:

In this question, you should remember the Hooke's Law in physics.

The Hooke's Law simply explains that the extension that occurs on a spring is directly proportional to the load applied on it.

The mathematical expression for this law is

F=-kx

where;

F= force applied on the spring

x = the extension on the spring

k= the spring constant which varies in spring.

The question will need you to calculate the extension on the springs A and B then compare the values obtained.

<u>In spring A</u>

Force, F=60N and spring constant ,k=4 N/m

To find the extension x apply the expression;

F=-kx\\\\60=-4*x\\\\60=-4x\\\\\frac{60}{-4} =\frac{-4x}{-4} \\\\\\-15=x

Here the spring extension is 15 m

<u>In spring B</u>

Force, F=60N and spring constant , k=5N/m

To find the extension x apply the same expression

F=-kx\\\\60=-5*x\\\\60=-5x\\\\\\\frac{60}{-5} =\frac{-5x}{-5} \\\\\\-12=x

Here the extension on the spring is 12 m

<u>Compare</u>

The extension on spring A is 3 m longer than that in spring B because when you subtract the value of spring B from that in spring A you get 3m

=15m-12m=3m

5 0
3 years ago
What is the value of the expression “eight more than three times the difference of four and a number” when n = 3?
Trava [24]

Answer:

The value of the expression would be 11.

Step-by-step explanation:

3 (4 - n) + 8

When n = 3:

3 (4 - 3) + 8

3 (1) + 8

3 + 8

11

8 0
3 years ago
Read 2 more answers
What nis the answer to n divided by 4 = 16
chubhunter [2.5K]

Answer:

Step-by-step explanation:

n/4 = 16

n = 16 × 4

n = 64

hope this helps

plz mark it as brainliest

4 0
3 years ago
Read 2 more answers
What expressions equal to 19
svp [43]
19 = 19/1 = 38/2 = 57/3 = 76/4
3 0
3 years ago
Double somme help please
Lady_Fox [76]

Answer:

looks like a nazi symbol

Step-by-step explanation:

7 0
2 years ago
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