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FinnZ [79.3K]
4 years ago
5

Twenty different statistics students are randomly selected. for each of​ them, their body temperature ​( degrees °​c) is measure

d and their head circumference​ (cm) is measured. if it is found that r=​0, does that indicate that there is no association between these two​ variables?
Mathematics
1 answer:
Trava [24]4 years ago
8 0
Yes, it does.

An r-value, or correlation coefficient, goes from -1 to positive 1.  -1 indicates a perfect decreasing match and 1 indicates a perfect increasing match.  0 indicates no relationship between the variables.
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Y−3=2(x+1) solve this
Elena-2011 [213]

Answer:

Y-3 = 2(x+1)

open the brackets

Y-3 = 2x+2

Y = 2x+5..... this is the answer when solving for Y

if were solving for x:

Y-3 = 2x+5

Y-8 = 2x

\frac{y}{2} -4 = x

8 0
3 years ago
Convert the polar representation of this complex number into its standard form z=4(cos150+isin150).
Katen [24]

Answer:

B

Step-by-step explanation:

Using the exact values

cos150° = - cos30° = - \frac{\sqrt{3} }{2}

sin150° = sin30° = \frac{1}{2}

Given

z = 4(cos150° + isin150° ) , substitute values

  = 4(- \frac{\sqrt{3} }{2} +  \frac{1}{2}i )

  = - 2\sqrt{3} + 2i , that is

(- 2\sqrt{3}, 2 ) → B

7 0
3 years ago
find the area and perimeter using the lengthy and with step by step I will give 40 points please answer right number 6,7,9,10,11
N76 [4]

Answer:

6. 16 meters^2, 16 meters

7. 100 milimieters^2, 40 milimeters

9. 56 centimeters^2, 30 centimeters

10. 49 inches^2, 28 inches

11. 9 meters^2, 12 meters

12. 72 yards^2, 36 yards

Step-by-step explanation:

s is for a square

A=s^2

P=4s

l+w is for a rectangle

A=lw

P=2l+2w

6. A=4^2

A= 16 meters^2

P=4*4

P= 16 meters

7. A=10^2

A=100 milimieters^2

P=4*10

P= 40 milimeters

9. A=8*7

A= 56 centimeters^2

P=2(8)+2(7)

P=30 centimeters

10. A=7^2

A=49 inches^2

P=4*7

P=28 inches

11. A= 3^2

A=9 meters^2

P=4*3

P= 12 meters

12.

A=12*6

A=72 yards^2

P= 2(12)+2(6)

P= 36 yards

Let me know if you have any questions. Also, don't forget units!

4 0
3 years ago
What is the input value for which f(x)=3​
777dan777 [17]
X=-3. The question is wanting to know that if y=3, what does x equal? Well the only y-value that has y=3 on this line is x=-3
7 0
3 years ago
Read 2 more answers
Solve for x: 3x-2>5x+10
Pani-rosa [81]

Combine like terms:


3x-2>5x+10 becomes -12 > 2x


Dividing both sides by 2, we obtain x < -6

6 0
3 years ago
Read 2 more answers
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