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3 years ago

in 2000 the u.s population was 281 million people in 2008 it was 305 million what was the rate of population change per year

Mathematics

1 answer:

irga5000 [103]3 years ago

4 0

The rate of change per year is 3 million per year.

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F(n)=n^2+2n find f(-6)

Savatey [412]

F(-6) = (-6)2 + 2(-6)
= -12 - 12
= -24

7 0

3 years ago

Explain that you found the volume of water in the fish tank if it was only one and a half full with water show your work and sol

Reptile [31]

Answer:

The volume of water in the fish tank is 4.5 cubic feet

see the explanation

Step-by-step explanation:

The complete question is

Explain how you found the volume of water in the fish tank if it was only 1/2 full with water. Show your work and solution. Don't forget your UNITS!

You have a fish tank with the following dimensions:

Height: 3 feet

Width: 1.5 feet

Length: 2 feet

step 1

Find the volume of the fish tank

The volume of a rectangular prism ( fish tank) is equal to

$V=LWH$

substitute the given values

$V=(2)(1.5)(3)=9\ ft^3$

step 2

Find the volume of water in the fish tank

Remember that

The fish tank it was only one and a half full with water

Multiply the volume of the fish tank by one and a half to obtain the volume of water

$\frac{1}{2}(9)=4.5\ ft^3$

8 0

3 years ago

The lifespans of gorillas in a particular zoo are normally distributed. The average gorilla lives 20.8 years; the

Luda [366]

If the mean is 20.8, one standard deviation each way is adding and subtracting 3.1, so 17.7 and 23.9 (68% of values)

Two standard deviations adding and subtracting 3.1*2 = 6.2, or 14.6 and 27.

Three standard deviations is 11.5 and 30.1

So we have
11.5 - 14.6 - 17.7 - 20.8 - 23.9 - 27 - 30.1

Going left to 11.5 is 3 standard deviations out, so 99.7/2 = 49.85%

Going right to 27 is 2 standard deviations out, so 95/2 = 47.5%

Add those two % to get 97.32%

This is hard to do without a picture so I hope that helps!

3 0

3 years ago

Problem 1: 2x > 4x - 6 problem 2: -3r < 10 - r problem 3: 5c - 4 > 8c + 2

Trava [24]

Problem 1: 2x > 4x - 6
2x < 6
x < 3

problem 2: -3r < 10 - r
-2r < 10
r > -5

problem 3: 5c - 4 > 8c + 2
3c < -6
c < -2

8 0

3 years ago

What is the equivalent expression for 8w - 16?

Maslowich

Answer:

8(w - 2)

Step-by-step explanation: