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Aleks04 [339]
3 years ago
8

Find the missing values in the following figures​

Mathematics
1 answer:
jekas [21]3 years ago
4 0

Answer:

15.

  x = 40/9 = 4 4/9

  z = 24/5 = 4 4/5

17.

  x = 50

  y ≈ 11.5

Step-by-step explanation:

15. Corresponding segments are proportional:

  top right side / whole right side = x / 8

  5/(5+4) = x/8

  x = 8(5/9) = 40/9

  x = 4 4/9

__

  right side bottom / right side top = z / 6

  z = 6(4/5) = 24/5

  z = 4 4/5

____

17. The acute angles are complementary:

  x = 90 -40 = 50

__

From the Pythagorean theorem:

  y = √(15² -9.6²) = √132.84

  y ≈ 11.5

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A study was done that looked at how much red meat people consumed and how long they lived. The correlation r was found to be 0.9
AVprozaik [17]

Answer:

False

Step-by-step explanation:

Since the correlation r was found to be 0.98 (a value closer to 1).  

Let X =how much red meat people consumed

let Y = how long they lived.

where the x-values are the values of the deviations of co-ordinates X from Xₙ, their mean value and the y-values are the values of the deviations of co-ordinates Y from Yₙ, their mean value.

That is, x=(X−Xₙ) and y=(Y−Yₙ).

The results of this determination give values of r lying between +1 and −1, where;

+1 indicates perfect direct  correlation,

−1 indicates perfect inverse correlation and

0 indicates that no correlation exists.

Between these values, the smaller the value of r, the less is the amount of correlation which exists.

Generally, values of r in the ranges 0.7 to 1 and −0.7 to −1 show that a fair amount of correlation exists.

therefore, it can be seen that there is a perfect relationship between the quantity eaten and how long the person live

But, the correlation does not consider those that does not consume meat, and it is very hard to determined the answer to the question.

the answer is false because there are other reasons that determined longevity of life apart from meat consumption.

3 0
3 years ago
I need to drink 8 2/4 cups of water and 2 1/5 cups milk every day. How much fluid do I have to drink?
lidiya [134]

Answer:

The total fluid you have to drink is 10  7/10  =  10.7  cups.

Step-by-step explanation:

The daily requirement  of water =  8 2/4 cups

Now, 8 \frac{2}{4}  = 8+  \frac{2}{4}  = 8+ 0.5 = 8.5

or, the daily water requirement = 8.5 cups

The daily requirement  of milk =  2 1/5 cups

Now, 2 \frac{1}{5}  = 2+  \frac{1}{5}  = 2+ 0.2 = 2.2

or, the daily milk requirement = 2.2 cups

So, The total fluid needed  = Cups of  (Water + Milk) needed

                                              =  8.5 cups + 2.2 cups

                                              = 10.7 cups

Also, 10.7 = 10 + 0.7 = 10 + \frac{7}{10}  = 10\frac{7}{10}

Hence, the total fluid you have to drink is 10 7/10 cups.

5 0
3 years ago
How many minutes are there in 4 and a half hours?
Annette [7]
1 \ hour=60 \ minutes \\\\ a \ half \ an \ hour = \frac{1 \ hour}{2}=\frac{60min}{2}=30 minutes \\\\ 4 \ hurs \ and \ a half = 4*60+30= \\\\ =240+30=\\\\ =\boxed{270}
7 0
3 years ago
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Molodets [167]

Answer:

D

Step-by-step explanation:

This function passes the vertical line test.

The vertical line test test is done by drawing a vertical line anywhere on the graph. If the line goes through two points or more then it isn't a function.

7 0
1 year ago
A stack of 5 books weighs 9.5 pounds. If each book weighs the same amount, how much does each book weigh?
hjlf

Answer:  The same amount of book weighed is 14.5.

Step-by-step explanation:

So there is 5 books

9.5 pounds

9.5 + 5 = 14.5

So, Each book weighs about 14.5.

8 0
2 years ago
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