Answer:
d. 130
Step-by-step explanation:
Answer:
any score that lies between 88.8 and 97.2 is within one std. dev. of the mean
Step-by-step explanation:
One std. dev. above the mean would be 93 + 4.2, or 97.2. One std. dev. below the mean would be 93 - 4.2, or 88.8.
So: any score that lies between 88.8 and 97.2 is within one std. dev. of the mean.
Answer:
The hexagon has an area of 220.6 square units.
Step-by-step explanation:
You can solve this by realising that the hexagon can be divided into 6 equilateral triangles of the same area.
The area of the triangle is the same as a rectangle of the same width and height, but divided by two, and we're told that the width of the side is 9.2, and the height is eight. So the total area of the hexagon is:
6 × (9.2 × 8) / 2
= 9.2 × 24
= 220.6
So the hexagon has an area of 220.6 square units.
Answer:
Step-by-step explanation:
He is able to teach 3 classes per night.