A correlation coefficient between average temperature and coat sales exists most likely to be between 0 and -1.
<h3>What is the correlation coefficient?</h3>
The correlation coefficient exists as the exact measure that quantifies the power of the linear relationship between two variables in a correlation analysis. A correlation coefficient between average temperature and coat sales exists most likely to be between 0 and -1.
A negative correlation suggests two variables that tend to move in opposite directions. A correlation coefficient of -0.8 or lower displays a strong negative relationship, while a coefficient of -0.3 or lower signifies a very weak one.
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5 nail polish and 4 lip gloss
5 x 4.5 =22.5
4 x 7 =28
28+22.5=50.50
Answer:
D. 1.4*10^-1 seconds
Step-by-step explanation:
We know that distance = rate * time
We know the rate = 3.00 • 10^8 meters per second
and the distance =4.2*10^7 meters
distance = rate * time
4.2*10^7 meters = 3.00 • 10^8 meters per second * time
Divide each side by 3.00*10^8
4.2*10^7 /3*10^8 = 3.00 • 10^8/3*10^8 * time
4.2*10^7 /3*10^8 = * time
4.2/3 * 10^7/10^8 = time
When we divide exponents of the same base, we subtract the exponents keeping the base
1.4 * 10^(7-8) = time
1.4 * 10^-1 seconds = time
The easiest way to solve this problem is by using the Pythagorean theorem :D
Pythagorean theorem: [-b +- sqrt(b^2 - 4ac)]/2a
5 = a
-1 = b
6 = c
therefore, by plugging these values in!
[-(-1) +- sqrt((-1)^2 - 4(5)(6))]/2(5)
[1 +- sqrt(1 - 120)]/10
Oh so we're using imaginary numbers, so in this case you'll need to know that i = sqrt(-1), so keep this in mind (I can see why this was so difficult)
[1 +- sqrt(119)*i]10
answers:
( 1 + i*sqrt(119) ) / 10
( 1 - i*sqrt(119) ) / 10