79, 79, 91, 91, 91, 91, 98, 98, 118, 130, what is the mean median and mode?

Answers

Answer 1

Answer: To get the mean you add the numbers and divide by how many numbers there are and then you would get: 784 divided by 10 which would be 78.4 for the mean

Answer 2

Answer: mean: add everybody and divide by how many numbers tehre are
first count
10 numbers
add them
(79+79+91+91+91+91+98+98+118+130)=966
divide that by 10
966/10=96.6
mean=96.6

median is the number that is in the middle when you arange them in order from lowest to highest
count to 5th number or 6th and aveage them
91 is median

mode is the number tha appears most often
91 appears 4 times

modse is 91

mean=96.6
median=91
mode=91

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A rectangle has a side lenghts of 5 centimeters and 3 centimeters. If the side lenghts are doubled, will the area also double?
If y varies directly with x and x=21 and y=14, what is the constant of proportionality?
Jason wrote the mixed number 1 1/3 as the sum of three fractions. None of the fractions had a denominator of 3. How is this possible? What fractions might jason have used?
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The square pyramid has a volume of 972 cubic inches. What are the dimensions of the pyramid?Please Help! ☺

Answers

Volume of Pyramid is given by 1/3 base area x height

From the figure we see the base have equal side x so it is a square .Are of

Base = area of square.

Area of base = area of square = x .x = x2

Volume of Pyramid = 1/3 . base area .height

Volume of Pyramid = 972 cubic inches given.

Height of Pyramid= ½ x inches .

Substituting the values of volume ,height and base area we have:

972=1/3 .x2.1/2 x.

972=1/6 x3

Multiplying both sides by 6 we have:

5832=x3

Taking cuberoot of both sides.

X=18in

Length of the side of base is x= 18in each height is ½ x = ½ .18= 9 in

Height of a triangle with base 5m and area 20m2

Answers

Since the "base of a triangular sail is 5m shorter than its height", we have the equality

Start with the formula for the area of a triangle

Plug in , , and

Multiply both sides by 2

Distribute

Subtract 36 from both sides

Factor the right side (note: if you need help with factoring, check out this solver)

Now set each factor equal to zero:
or

or  Now solve for x in each case

So our possible answers are

or

However, since a negative height doesn't make sense, our only solution is

So the height is 9 m

Now subtract 5 from the height to get the base

So the base is 4 m

Check:

Start with the formula for the area of a triangle

Plug in , , and

Multiply

Divide. Since the two sides of the equation are equal, this verifies our answer.

If you have a triangle with a base of 5m and an area of 20m2, to find the height begin with the formula of the area of a triangle.

A=1/2bh

Then, plug in your known numbers

20m2=1/2h(5m)

What I do next, is I work backwards by dividing the are by 1/2, which equals 40. All that is left to do, is divide this number, 40, by 5 to find the height.

40/5=8

Therefore, the height of the triangle is 8m

Eric has a dog walking business. He charges $13 per dog he walks and $6 for the water he buys for the dogs. If he made $97 on Monday, write an equation to find the number of dogs he walked on Monday.

Answers

13+6(d)=97
Each dog Eric walks is 13 plus 6 dollars for water. He earns 97 dollars buy you don't know the amount of dogs so d=dogs. You need to multiply the amount if dogs to the amount of money Eric earns.

The surface area of a game cube is 384 square millimeters. how long is each edge of the cube?

Answers

$a\ \rightarrow\ the\ long\ of\ each\ edge\ of\ the\ cube\nthe\ surface\ area\ of\ a\ game\ cube=384\ mm^2\n\n6a^2=384\ /:6\n\na^2=64\ \ \ \Rightarrow\ \ \ a=8\n\nAns.\ the\ long\ of\ each\ edge\ of\ the\ cube\ is\ 8\ mm.$

$6a^2=384\n a^2=64\n a=8 \ mm$

With a rectangle length of 309 cm.and width of 249cmdoes it have the perimeter of 1500 cm?

Answers

1116 is the perimeter it has. The formula for perimeter is 2l+2w=p
so when you plug the numbers in you get 2(309)+2(249)=1116. So it does not have a perimeter of 1500 cm.

If the complex number x= 3+bi and absolute value of x squared equals 13 which is the possible value of b?

Answers

13 to the power of one

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