there are 20 students in a homeroom how many different ways can they be chosen to be elected president vice president treasurer
1 answer:
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Answer:
option.D
Step-by-step explanation:
- each day it changes by
- so for two days , the elevation becomes
+
- for 3 days :
- so, for n days,
= n*
- therefore, for x days, elevation = x*
- as it is given that after certain days this elevation has reached
- so, x*
Answer:
Check below
Step-by-step explanation:
1) Check the rectangle below with a line k, the axis of rotation in the center of the figure.
2) Since it has a perimeter of 32 units and it is to be rotated about the line, the solid to be created it is a cylinder. As you can see below.
3) Let's calculate its radius, based on the information given, i.e. the perimeter:
Since the line of rotation is the center, and the radius is half the line segment of the basis, then the radius is 5.
