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4 years ago

What is the mean of 5, 10, 10, 15, 15, 20

Mathematics

1 answer:

Andreas93 [3]4 years ago

3 0

Answer:

The mean of this set of numbers is 12.5.

Step-by-step explanation:

first add all of the numbers, we get a product of 75, then divide by the number of numbers (6) and we get an answer of 12.5.

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2t + 1 + 6 + 4t = 55<br> show your work

Ivan

Combine like terms, 1+6 is 7 and 2t+4t is 6t. so 6t+7=55. get the t by itself by subtracting 7 from both sides. 6t=48, divide by 6. t=8

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3 years ago

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How many congruent sides does an equilateral triangle have?

RideAnS [48]

Answer:

3 congruent sides

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3 years ago

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G(x)= -8x-3, evaluate g(x)+g(2)

makkiz [27]

Answer:

-8x - 22

Step-by-step explanation:

Step 1: Define

g(x) = -8x - 3

g(2) is x = 2

Step 2: Find g(2)

g(2) = -8(2) - 3

g(2) = -16 - 3

g(2) = -19

Step 3: Find g(x) + g(2)

-8x - 3 + -19

-8x - 3 - 19

-8x - 22

5 0

4 years ago

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Circle towns limit form a perfectly circular shape that has a population of 20000 in the population density of 480 people per sq

Alex

Answer:

$D =\frac{P}{\pi X^2}$

And solving for the radius we got:

$X = \sqrt{\frac{P}{\pi D}}$

And replacing the data given we got:

$X = \sqrt{\frac{480 \frac{people}{km^2}}{\pi *20000 people}}= 0.0874Km$

And this value converted to meters is $X = 87.40 m$

Step-by-step explanation:

For this case we know the population size $P = 20000$ and we also know the population density $D = 480 \frac{people}{km^2}$

We can assume that the area is a circle. We also know that the formula for the population density is given by:

$D= \frac{P}{A}$

Where P represent the number of people and A the area. Since we are assuming a circle then the area is given by:

$A = \pi X^2$

With X the radius of the circle

And then the populationd density become:

$D =\frac{P}{\pi X^2}$

And solving for the radius we got:

$X = \sqrt{\frac{P}{\pi D}}$

And replacing the data given we got:

$X = \sqrt{\frac{480 \frac{people}{km^2}}{\pi *20000 people}}= 0.0874Km$

And this value converted to meters is $X = 87.40 m$

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4 years ago

Noah says that 9x - 2x + 4x is equivalent to 3x, because the subtraction sign tells us to subtract everything that comes from af

Alex787 [66]

Agree with Elena. Noah is wrong. If it is 9x-(2x+4x) then it equals to 3x.

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3 years ago