MATHEMATICS HIGH SCHOOL

Find the mean and median of the data.

12, 15, 16, 18, 20, 90

please help!!!

Answers

Answer 1
Answer: The median is 17. The mean is 28.5. Hope this helps!

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30 × x = 90Plzzz help

Eliza Savage received a statement from her bank showing a checking account balance of $324.18 as of January 18. Her own checkbook shows a balance of $487.38 as of January 29. The bank returned all of the cancelled checks but three. The amounts of these three checks are $15.00, $77.49, and $124.28. How much did Eliza deposit in her account between January 18 and January 29?

Answers

Assuming that the three checks that were returned were deposited before Jan 29 and was returned also before Jan 29, the three deposited checks will be added to get 216.77. Next, we subtract 324.18 with 487.38 to get 163.2 which is the difference of Jan 18 and Jan29's  balance. Then add 163.2 and 216.77 to get 379.97, the total amount deposited

What is the factored form of 3c²+24c+48 ?

Answers

1st step factor 3 out of each number in the equation to get:

3(c^2+8c+16)
 
16 can be rewritten as 4^2 to get:
3(c^2+8c+4^2)

4+4 = 8 ( the middle number)

 so the factor would be 3(c+4)^2

If a polyhedron has a volume of 23cm3 and is dilated to the scale factor or 1/3 whats the volume

Answers

You just need to multiply 23 by 1/3. So: 23 * 1/3 or 23/1 * 1/3 = 23/3. It can be simplified into 7.67. Don't forget to include cm^3 after the value.

Final answer:

When a polyhedron with a given volume is dilated by a scale factor, the new volume is calculated by multiplying the original volume by the cube of the scale factor. So, a dilation of a polyhedron with an original volume of 23 cm³ by a scale factor of 1/3 gives a new volume of approximately 2.56 cm³.

Explanation:

In mathematics, a dilation is a transformation that changes the size of a figure without changing its shape. The degree of enlargement or reduction is called the scale factor.

In the question, the original volume of the polyhedron is 23 cm³ and it is dilated by a scale factor of 1/3. However, we need to remember that volume is associated with three dimensions. Therefore, when a polyhedron is dilated, each dimension (length, width, and height) is affected by the scale factor. Thus, to find the new volume, we apply the cube of the scale factor to the original volume.

In this case, the new volume V' would be calculated as: V' = V x (scale factor)³, which gives us V' = 23 cm³ x (1/3)³. Calculating this we get V' = approximately 2.56 cm³.

Learn more about Dilation of a Polyhedron here:

brainly.com/question/28718923

#SPJ5

Solve each quadratic equation. (2x-1)(x+7)=1

Answers

So you foil out the problem and get

For the equation y = 3x2 − 4x + 11, choose the correct application of the quadratic formula. x equals four plus or minus the square root of negative four squared minus four times three times eleven, all divided by two ti x equals negative four plus or minus the square root of negative four squared minus four times three times eleven, all divided x equals negative three plus or minus the square root of three squared minus four times negative four times eleven, all divided x equals three plus or minus the square root of three squared minus four times negative four times eleven, all divided by two t

Answers

y = 3x² - 4x + 11
0 = 3x² - 4x + 11
x = -(-4) ± √((-4)² - 4(13)(11))
                     2(3)
x = 4 ± √(16 - 4(143))
                     6
x = 4 ± √(16 - 572)
                   6
x = 4 ± √(556)
              6
x = 4 ± 2√(139)
             6
x = 2 ± √(139)
             3

Answer:

What he said below was that it was your second choice

(hope this helps or at least thats what i got from it)

If you have 16×18, and you double it and then halve it, what do you get? a) 16×9 b) 18×9 c) 8×9 d) 9×8

Answers

Answer:

none of the answers

Step-by-step explanation:

16x8=128 and if you double it and half it, it would still be 128. none of the answer choices equal 128.

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The______of the rectangular prism is 52 square units because LaTeX: 8+8+6+6+12+12=528+8+6+6+12+12=528+8+6+6+12+12=52.