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3 years ago

Will give 30 points and Brainliest!!!!

Mathematics

1 answer:

Sonja [21]3 years ago

7 0

Answer:

398

Step-by-step explanation:

20x19=380

20 is the 19/20 seats and the first row is 18 so you are gonna add 2 with the first row and have 20 for the rest of the rows other than the first one

19 is the 19 out of the 20 rows of seats and the last row is the one that has 18 seats

Once you get 380, you are gonna add the first row of seats which is 18 and you are gonna get 398

Hope I helped you

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siniylev [52]

Answer:

Step-by-step explanation:

answers: x = 7

x = -6

let me know if you need anymore help.

mark me brainliest please.

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3 years ago

If x and y vary directly, and x decreases, what happens to the value of y?

maw [93]

y will decrease as well

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3 years ago

Read 2 more answers

Find the mean, median, mode, and range of this data: 49, 49, 54, 55, 52, 49, 55. If necessary, round to the nearest tenth.

krok68 [10]

Answer:

Mean = 51.4.

Mode = 49.

Median = 52.

Range = 6.

Step-by-step explanation:

Mean = Sum of all observations / Number of observations.

Mean = (49+49+54+55+52+49+52)/7

Mean = 360/7

Mean = 51.4 (to the nearest tenth).

Mode = The most repeated values = 49 (repeated 3 times).

Range = Largest Value - Smallest Value = 55 - 49 = 6.

Median = The central value of the data.

First, arrange the data in the ascending order: 49, 49, 49, 52, 54, 55, 55.

It can be seen that the middle value is 52. Therefore, median = 52!!!

7 0

4 years ago

An artist cuts 4 squares with side length x ft from the corners of a 12 ft-by-18 ft rectangular piece of sheet metal. She bends

Kruka [31]

Answer:

$V=4x^3-60x^2+216x$

Step-by-step explanation:

<u>Volume And Function s</u>

Geometry can usually be joined with algebra to express volumes as a function of some variable. The volume of a parallelepiped of dimensions a,b,c is

$V=abc$

Our problem consists in computing the volume of a box made with some sheet of metal 12 ft by 18 ft. The four corners are cut by a square distance x as shown in the image below .

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$V=x(12-2x)(18-2x)$