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Serga [27]
3 years ago
13

6R + r -5r simplify each expression A.2r B.1 r + r C.0r D.7r-5r

Mathematics
1 answer:
olga nikolaevna [1]3 years ago
5 0
A. 2r
r-5r=-4r
6r+-4r=2r
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Will all random samples from a given population have the same mean? Provide an explanation with your answer.
avanturin [10]

Short answer No.


Explanation

Suppose you have a sample of coins that have the date of production on them. They go from 1990 to 2000 inclusive. There are 100 coins in each year. That means there are 1100 coins because there are 11 years. Now you pick out 10 coins without replacement. Let's say all of them are from 1999. Then the mean is 1999.


If you start again and pick out 10 and get 3 years

4 from 2000

2 from 1995

4 from 1992


Whatever the mean is, it is not 1999. The mean of the second batch is 1995.8!

5 0
3 years ago
Read 2 more answers
The diameter of the base of the cone measures 8units. The height measures 6 units. What is the volume of the cone? 24pi cubic un
creativ13 [48]

Answer:

The answer is 48pi

Step-by-step explanation:

what you have to do is you have to do 8*6=48 and there you go your answer

8 0
3 years ago
Pls help I cant do this
AlladinOne [14]

Answer:

Here you go!

Step-by-step explanation:

Hope this helped!

8 0
2 years ago
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Solve the equation for y <br><br> 5 ( y + 1 ) = 30 <br><br> y = ??
nexus9112 [7]
Hi again :)

5(y + 1) = 30
Once again, use the distributive property
(5)(y) + (5)(1) = 30
5y + 5 = 30
Add -5 to both sides
5y + 5 - 5 = 30 - 5
5y = 25
Divide both sides by 5
5y/5 = 25/5
y = 5

Best of luck!
5 0
3 years ago
Read 2 more answers
ANSWER I WILL GIVE BRAINLIEST
Anna007 [38]

Answer:

85 square inches

Step-by-step explanation:

The surface area is the area of all the sides and the bottom

The area of the bottom is

A = s^2  since it is a square

A = 5^2 = 25 in^2

The sides are triangles

A = 1/2 bh  where b is the base and h is the height

A = 1/2 ( 5)(6)

A = 15 in^2

We have 4 sides

The area of the 4 sides

4*15 = 60 in^2

Add the area of the side to the bottom

25+60 = 85 in^2

5 0
2 years ago
Read 2 more answers
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