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Leya [2.2K]
3 years ago
12

Solve for x. Show the equation you used and your work. Question 2 options:

Mathematics
1 answer:
Taya2010 [7]3 years ago
7 0
Add
24+18=42
36^2+x^2=42^2
1024+x^2=1764
-1024       -1024
x^2=740
x=27.2
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Select the most likely answer for the coefficient of linear correlation for the following two variables: x = the number of hours
tiny-mole [99]

Answer:

Option b) r = 0.70      

Step-by-step explanation:

We are given the following in he question:

Variables:

x = the number of hours spent studying for a test

y = the number of points earned on the test

  • Correlation is a technique that help us to find or define a relationship between two variables.  
  • A positive correlation means that an increase in one quantity leads to an increase in another quantity
  • A negative correlation means with increase in one quantity the other quantity decreases.
  • +1 tells about a a perfect positive linear relationship and −1 indicates a perfect negative linear relationship.
  • Values between 0 and 0.3 tells about a weak positive linear relationship, values between 0.3 and 0.7 shows a moderate positive correlation and a correlation of 0.7 and 1.0 states a strong positive linear relationship.
  • Values between 0 and -0.3 tells about a weak negative linear relationship, values between -0.3 and -0.7 shows a moderate negative correlation and a correlation value of of -0.7 and -1.0 states a strong negative linear relationship.

As the number of hours increases, the number of points earned on the test increases. Thus, the two variables are positively correlated.

Thus, the coefficient correlation between two variables can be given by r = 0.70, that shows a moderate positive correlation.

Option b) r = 0.70

8 0
3 years ago
PLEASE ANSWER ASAP FOR BRAINLEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Trava [24]

Answer: Should be 150mm

Step-by-step explanation:

Find the surface area of each figure. Round answers to the nearest tenth, if necessary

2 mm-

2/5 mm

10 mm

3 mm

O

75 mm2

150 mm2

92 mm2

86 mm2

4 0
3 years ago
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Classify the following triangle. Check ALL that APPLY
weeeeeb [17]

Answer:

scalene and obtuse all sides are different and bigger than 90 degree angle

8 0
3 years ago
Please heeelp !! <br> Missing triangles !!
Airida [17]

Answer: ABC seem to be equilateral

so A=B=C=60

D=42

E=35

F=35

G=55

H=45

I=45

j=15

k=15

L=75

M=180

N=11

O=35

P=11

Q=55

R=55

S=32

T=32

U=69

Step-by-step explanation:

6 0
3 years ago
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Please help!! <br><br>is it 16?​
sweet-ann [11.9K]

Answer:

area of trapezium: -

formula...

½(sum of parallel sides)×height=area

=>240=½(12+x)×12

=>240=(12+x)×6

=>240=60+6x

=>6x=240-60

=>6x=180

=>x=180/6

=>x=30cm

therefore, the value of x is 30 cm.

Step-by-step explanation:

hope it helps u

6 0
2 years ago
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