Differences between two samples are least likely to be statistically significant if<span>the samples are small and the standard deviations of the samples are large</span>
Answer:
The anwers is D
Step-by-step explanation:
The first statement, XZ ⊥ XY and XY = XZ = 5 proves that the triangle XYZ is isosceles.
One isosceles triangle has two congruent sides and two congruent angles.
And you should also know the theorem that states that if two sides of a triangle are congruent then the two angles opposite that sides are also congruent.
So, given that the two sides XZ and XY are congruent, their opposite sides are also congruent, and that proves that the the triangle is isosceles.
Answer:
It descends 3 km.
Step-by-step explanation:
The rate of change is the slope. The formula for slope is
Using the first two points, (0, 12) and (2, 10), we have
m = (10-12)/(2-0) = -2/2 = -1
This means the plane descends 1 km per minute. This means in 3 minutes' time, the plane descends 3 km.
