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3 years ago

Question 18 Calculate the mean 12, 2, 9, 12, 10

Mathematics

2 answers:

kramer3 years ago

6 0

Answer: 9

Step-by-step explanation:

first u have to add up all the numbers "12 + 2 + 9 + 12 + 10" and that's 45 then u have to divide by how many numbers there are, so there's 5 numbers. ur dividing "45/5" which is 9 so the mean is 9

mark as brainly plss

Schach [20]3 years ago

3 0

Answer:

Mean = 9

Step-by-step explanation:

The mean is the average of a data set. Given the values, 2, 9, 10, 12, 12:

Add all the numbers in the data set, and divide its sum by the number of items in the set:

Mean = $\frac{2+9+10+12+12}{5}$ = $\frac{45}{5}$ = 9

Therefore, the mean of the given data set is 9.

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The graph of f(x) = –3(x – 1)2 + 4 is shown on the left. Which interval defines the domain of the function? (-∞, 4) (-∞, 4] (-∞,

noname [10]

Answer:

Step-by-step explanation:

The graph can take any value of X

-3[ x^2 - 2x + 1] + 4

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-3x^2 + 6x + 1

x can take any value of real numbers and there would be a solution

Hence all real numbers is the domain.

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3 years ago

A rectangle and a square have the same area. The length of the rectangle is seventy feet more than two times its width. The leng

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Using the side of the square find the area:

Area = 30^2 = 900 square feet.

The rectangles area is the same, 900 square feet.

Let the width = X

The length would be 2X + 70

Area = length x width

X * 2x+ 70 = 900

This expands to 2x^2 * 70x = 900

Use the quadratic formula to solve for x:

-70 +/- sqrt(70^2-4*2(-900))/2*2

X = 10

Width = x = 10 feet

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2 years ago

The function C(L) = |L – 105| can be used to determine the difference between the expected and actual crop of lemons, L, from a

REY [17]

Answer:

w(C(L))= 0.25 |L - 105|

Step-by-step explanation:

you plug in C(L) into L in w(L)

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3 years ago

A piece of cardboard is 15 inches by 30 inches. A square is to be cut from each corner and the sides folded up to make an open-t

solmaris [256]

Answer:

Maximum volume = 649.519 cubic inches

Step-by-step explanation:

A rectangular piece of cardboard of side 15 inches by 30 inches is cut in such that a square is cut from each corner. Let x be the side of this square cut. When it was folded to make the box the height of box becomes x, length becomes (30-2x) and the width becomes (15-2x).

Volume is given by

V = $V = Length\times Width\times Height\\V = (30 - 2x)(15-2x)x= 4x^3-90x^2+450x\\So,\\V(x) = 4x^3-90x^2+450x$