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Mademuasel [1]
3 years ago
9

Two children of mass 19 kg and 33 kg sit balanced on a seesaw with the pivot point located at the center of the seesaw. show ans

wer No Attempt If the children are separated by a distance of 3.0 m, at what distance, in meters, from the pivot point is the smaller child sitting in order to maintain the balance?
Mathematics
1 answer:
Molodets [167]3 years ago
7 0

Answer:

  1 47/52 m ≈ 1.904 m

Step-by-step explanation:

Let x represent the distance from the pivot to the smaller child. Then x-3 will be the distance to the larger child. The sum of moments about the origin (pivot point) will be zero:

  19x +33(x-3) = 0

  52x = 99 . . . . . . . eliminate parentheses, add 99

  x = 99/52 = 1 47/52

The smaller child is sitting 1 47/52 meters from the pivot point, about 1.904 m.

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The data show the number of viewers for television stars with certain salaries. Find the regression​ equation, letting salary be
larisa86 [58]

Answer:

y = 5.064 - 0.010x

Here, in this question x = 33

y = 4.734 million views

In this question data is missing and I filled it out and calculated the questions accordingly. Please refer to the attachment for the data calculated.

Step-by-step explanation:

First of all, this question is incomplete. It lacks the data needed to calculate the required things.

So, I  figured out the question and I will try my best to solve the question at hand.

I have calculated the some data sheet in excel. Please refer to the attachment for that data.

let a be the salaries

b be the viewers

S_{aa} = ∑a^{2}  - \frac{ Summtion  a^{2} }{n}

S_{aa} = 7522.8571

S_{bb} = ∑b^{2}  - \frac{ Summtion  b^{2} }{n}

S_{bb} = 47.1943

S_{ab} = ∑ab^{}  - \frac{ Summtion  a x Summation b^{} }{n}

S_{ab} = -76.8286

Now the slope of the required regression equation is:

Slope =  S_{ab}/S_{aa} = -76.8286/7522.8571 = -0.010

And the intercept of the required regression equation:

intercept = \frac{1}{n} x (∑b - slope x ∑a) = 5.064

So, the regression equation will be:

y = intercept + slope x

y = 5.064 - 0.010x

Here, in this question x = 33

y = 5.064 - 0.010 (33)

y = 4.734 million views

7 0
2 years ago
Dont answer tell pic is uploaded
True [87]
The two consecutive integers the square root of 117 lies between are 10 and 11.

10 squared is 100 and 11 squared is 121.

7 0
3 years ago
Please help asap!!!!!!!!!!!
Aleksandr-060686 [28]

Answer:

ITS C THE ANSWER IS C

Step-by-step explanation:

5 0
2 years ago
Move the numbers to the blanks to order them from least to greatest value.
pishuonlain [190]

Answer:

-2.12 -089 0.4 9/8

Step-by-step explanation:

im good at fractions

6 0
2 years ago
Read 2 more answers
Full explanation Please<br> Will mark brainlist
Katyanochek1 [597]

The sum of 2 sides of a triangle needs to be greater than the length of the 3rd side.

14 + 29 = 43 (this is greater than 41)

14 + 41 = 55 (this is greater than 29)

29 + 41 = 70 (this is greater than 14)


(14, 29,41) can form a triangle.


6 0
2 years ago
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