71, 80, 82, 78, 80, 91, 107, 121, 125, 131, and 142. The variance of this data set is?
adoni [48]
Answer:
636.41818
Step-by-step explanation:
^2=∑=1(−⎯⎯⎯)2−1
^2=−1
^2=6364.181811−1
^2=6364.181810
^2=636.41818
I hope this helps :)
Do you remember your unit circle? If sin ω = was -1/2, then it would be 7<span>π/6. If you're unfamiliar with the unit circle, we can derive it.
So, you know that sin is OPPOSITE/HYPOTENUSE, and it's in the third quadrant, where x and y would be negative. If sin </span>ω = -1/2, that means that ω = 1/sin*(-1/2), or sin^(-1)*(-1/2). Let's ignore the negative for now and plug sin^(-1)*(-1/2) into your calculator in radians. You get (1/6)π. But that's in Quadrant 1. We want it in Quadrant 3.
In one complete revolution, or 360°, there are 2π radians. That means, if you want to rotate it 180°, you need to add π to what you originally got.
π+(1/6)π=(7/6)π.
I highly recommend you memorize the unit circle if you haven't already, because you'll need it from Precalculus on.
Answer:
why should anyone care about a school bus
Step-by-step explanation:
Answer:
82
Step-by-step explanation:
m = 4
8m = 4 x 8 = 32
n = 10
5n = 5 x 10 = 50
32 + 50 = 82
Answer:
I think 15
Step-by-step explanation:
15+15=30, so both 3 or 4 point questions have 15 problems each, hope this helped
