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
1cm = 16km
1cm • x = 23.1cm
x = 23.1
16km • 23.1 = 369.6km
The real distance is 369.6km.
I think the answer is Letter C - 0.032.
Given: p - 0.1; n - 90
Required: standard deviation of the sample proportion
Solution: To get the standard deviation of the sample proportion, we will use this formula - std = √p (1 - p) / n Replace the variables with the given values, then simplify.
std = √0.1 (1 - 0.1) / 90
std = √0.09 / 90
std = √0.001
std = 0.032
The total distance that Dominik will have to walk is the sum of the length of the escalator and the distance that the escalator has traveled. Let t be the time it will take him to reach the top of the escalator. The equation that best models the situation is,
225 ft + (82 ft/min) x t = (106 ft/min) x t
The value of t is 9.375 minutes.
Answer:
proper fraction
Step-by-step explanation:
Mixed number has a whole number and a fraction a b/c
Improper fraction has a numerator that is greater than the denominator a/b where a is greater than b a>b
Proper fraction has a numerator that is less than the denominator a/b where a is less than b a<b
