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Katarina [22]
3 years ago
10

To find the average age of drivers in a particular city, use all the names of people with driver’s licenses put into a file. One

hundred names are picked blindly from the file as a sample. Is this a good sample?
a. No; the sample is not selected from the population to be studied.
b. Yes; the sample is selected at random from the population to be studied.
c. No; the sample is not random.
Mathematics
1 answer:
dangina [55]3 years ago
3 0
Yes, that's a good random sample.

In a huge city, it may not be big enough, but it's nice and random.
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Use rigid motions to explain whether the triangles in the figure are congruent. Be sure to describe specific rigid motions in yo
Arada [10]

Answer:

6tg67g76g76g76

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
tennis balls with a diameter of 2.5in are sold in cans of three. the can is a cylender. what is the volume of the area not occup
mina [271]

Answer:

The volume of the area not occupied by the tennis balls is 12.28 cubic inches.

Step-by-step explanation:

It is given that tennis balls with a diameter of 2.5in are sold in cans of three. the can is a cylinder.

Radius of ball = Radius of can = \frac{2.5}{2}=1.25

Height of can = 2.5\times 3=7.5

The volume of sphere is

V=\dfrac{4}{3}\pi r^3

where, r is radius of sphere.

The volume of a tennis balls is

V=\dfrac{4}{3}\pi (1.25)^3

V=8.18123

V\approx 8.18

Volume of three tennis balls is

V_1=3\times 8.18=24.54

The volume of cylinder is

V=\pi r^2h

The volume of can is

V_2=\pi (1.25)^2(7.5)

V_2=36.81553

V_2\approx 36.82

The volume of the area not occupied by the tennis balls is

Volume = Volume of cylinder - Volume of three tennis balls

            = 36.82 - 24.54 = 12.28 inches

Therefore, the volume of the area not occupied by the tennis balls is 12.28 cubic inches.

3 0
3 years ago
1. Graph the system of inequalities.
Tamiku [17]

see attached picture of how graph should look.

 search through word for a graph icon, you should be able to do this in Word.

4 0
3 years ago
Please i need help quick its in picture​
eduard

Answer:

Not independent

Step-by-step explanation:

The number of single bedroom apartments is 90;

The number of single occupants in that 90 is 64;

64/90 or 32/45 is the rate that a single occupant lives in a 1 bedroom apartment.

The number of multiple bedroom apartments is 110;

The number of single occupants in that 110 is 12;

12/110 or 6/55 is the rate that a single occupant lives in a multiple-bedroom apartment.

The rate of single occupants in any type of apartment is 76/200 or 19/50

32/45>19/50>6/55; since the rate of single occupants in 1 bedroom apartments is higher than the rate of single occupants living in any type of apartment and a multiple-room apartment, the event that an apartment has 1 bedroom and 1 occupant is not indepenent.

8 0
2 years ago
Please help I'm really stuck
Anit [1.1K]
First factor the numerator
b^2-6b+8/b-4  * b+8/b-2

u will get
(b-2)(b-4)/(b-4)*(b-2)*b+8
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b+8<span />
7 0
3 years ago
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