Answer:
The area is 19.63.
Step-by-step explanation:
Dividing by a fraction is like multiplying with the inverse.
So 14 / (2/7) is the same as 14 * 7/2, which is 49
It is incorrect because when you times a negative by a positive. It is a negative number.
Answer:
slope is -5
Step-by-step explanation:

This equation is in slope-intercept form:

where m is the slope and b is the y-intercept.
In the given equation, the slope is -5 and the y-intercept is 1.
Answer:
Step-by-step explanation:
If you had a solid cylinder, in order to find the amount of material that makes up that solid cylinder, you would find the volume using the radius of 4 (half of the diameter 8). BUT we want to know the volume of the solid with the radius of 4 minus the solid that has a radius of 2.5 (half of the diameter 5).
That's volume outer - volume inner. To find the outer volume:
so
and
and do the same for the inner volume:
and

Subtract the inner from the outer:

If you need your answer in decimal form, then the volume is
9189.16 cm³