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Vladimir [108]
3 years ago
13

What is the mean of the data set? 17, 24, 26, 13 4 13 20 80

Mathematics
2 answers:
a_sh-v [17]3 years ago
6 0

Answer:

20

Step-by-step explanation:

You need to add all four then divide the answer by 4.

Hope this helps.

puteri [66]3 years ago
4 0

Answer:

20

Step-by-step explanation:

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22: A 2.0 kg object moves along the x-axis under the influence of an unknown force. Its potential energy due to the force is U(x
aleksandr82 [10.1K]

Answer: a) -13.25 N, b) 1.78 m/sec

Step-by-step explanation:

Since we have given that

U(x)=ax^4+bx^2

where

a=2.5\ J/m^4\\\\b=12\ J/m^2

As we know that

F=\dfrac{-dU}{dx}=-(4ax^3+2bx)

Here, x= 0.5 m

So, it becomes,

F=-(4\times 2.5\times (0.5)^3+2\times 12\times 0.5)=-13.25\ N

Now, we need to find the velocity when it crosses the origin,

F=mg\\\\F=m\dfrac{dv}{dt}\\\\F=mv\dfrac{dv}{dx}\\\\-(4ax^3+2bx)dx=mvdv\\\\\int\limits^{0.5}_0 {-(4ax^3+2bx)} \, dx =\int\limits {mv} \, dv\\\\ \dfrac{-4ax^4}{4}+\dfrac{2bx^2}{2}|_0^{0.5}=\dfrac{mv^2}{2}\\\\ax^4+bx^2|_0^{0.5}=\dfrac{mv^2}{2}\\\\2.5(0.5)^4+12(0.5)^2=\dfrac{2v^2}{2}\\\\0.15625+3=v^2\\\\3.15625=v^2\\\\\sqrt{3.15625}=v\\\\v=1.78

Hence, a) -13.25 N, b) 1.78 m/sec

7 0
4 years ago
Which ratio is equivalent to 4:5?
Elis [28]

Answer:4:5xn

Step-by-step explanation:

You can use any ratio just times 4:5 by any number then you'll get a ratio equivalent to 4:5

6 0
3 years ago
Read 2 more answers
5. Mr. Martinez is getting a rug for his den and wants to make sure it will fit.He knows the area of the den is 547.35 square fe
evablogger [386]
No.

If the Den is 547.35 Square feet, and one side length is 26.7, you divide the Area by one side length to get the other. 547.35/26.7= 20.5

20.5 is less than <span>23.5. Therefore the rug will not fit.</span>
8 0
4 years ago
F(2)=<br> Please please help me
Whitepunk [10]

Answer:

F(2)=-2

Step-by-step explanation:

Y=F(2) AS SEEN IN GRAPH Y=-2

3 0
3 years ago
Read 2 more answers
Help pls!! this is a presentation I’m doing in class and I NEED this completed rn, ASAP!!! . What I need is just the answers for
Diano4ka-milaya [45]

15. 70° because a right angle is 90° and we have the angle of ADB which is 20°. So 90°-20°=70°.

16. 70° because angle PSQ is 60° and angle QSR is 10°. So 60°+10°=70°.

17. 55° because it says it in the explanation. I assume this is a typo and they meant to ask the measurement of ADC and in that case it would be 130° because angle ADB is 75° and angle BDC is 55°. 75°+55°=130°.

18. 40° because angle PSQ is a right angle which means it's 90°. So 130°-90°=40°.

19. 140° because angle ADB is 120° and angle BDC is 20° so 120°+20°=140°.

20. 125° because again it's in the explanation. But if it's a typo and they meant what is the measurement of PSQ then it is 50° because PSR is 125° and QSR is 75° so 125°-75°=50°.

Hope this helps! :)

5 0
3 years ago
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