Most graphing calculators will do weighted averages pretty easily. It is mostly a matter of data entry.
mx = -2
my = 10
(x, y) = (mx, my)/10 = (-0.2, 1)
To find the tip of the bill. You will need to find how much of $86.40 is 20%. In this question, they're asking how much is the tip, not how much will the final price be.
When you multiply a percentage you move the decimal point 2 times to the left: 20. → .20
You would multiply $86.40 by .20
When you solve it 86.40 × .20 = 17.28
$17.28 is 20% of $86.40
$17.28 will be the amount he got for his tip.
Answer:
Center of the Sphere is a fixed point in its interior which is equidistant from each point on sphere. Option 1 is not right because it says center is line segment. Option 3 is right as it says it is fixed and equidistant from point of surface.
Step-by-step explanation:
1 The center of a sphere is
2 a line segment from the center point to the surface of the sphere.
3 a fixed point equidistant from all points on the surface of the sphere.
4 a three-dimensional circle in which all points are equidistant from a fixed point.
5 the same as the base of the sphere
nvm too late :D
the answer is number 3
