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3 years ago

PLEASE HELP WITH MATH AND BEST GETS BRAINLIEST. PLEASE SHOW WORK.

Mathematics

2 answers:

faltersainse [42]3 years ago

6 0

So you have to fine the total volume of the pool which is 1274 feet. then multiply that by 7.48 to get 9529.52. so thats how much water is held in the pool at 100%. so now you can divide 9529.52 by 10 to get you 10% of the pool which is 952.952. then multiply that by 8 to get 7623.616 gallons of water. and thats your answer.

rosijanka [135]3 years ago

6 0

The volume of the water in the pool is (24.5 x 13 x 4) cubic feet.

The number of gallons is (24.5 x 13 x 4 cubic feet) x (7.48 gal/cu-ft)

80% means 0.80 .

To fill the pool to 80% of capacity, it takes

(0.8) x (24.5 x 13 x 4 cubic feet) x (7.48 gal/cu-ft) gallons.

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If the order of selection is considered relevant, in how many ways can k objects be selected from a set of n objects?

Hoochie [10]

hi,

You have to use a formula which is known as of binomial coefficient which is :

k among n is : C ( n /k) = n! / k! ( n-k)!

! = factorial

ex : 5 object among 8 is : C ( 8/5 ) = 8 ! / 5! * ( 8-5) !

As 8! = 8*7*6*5*4*3*2*1 = 40 320

As 5! = 5*4*3*2*1 = 120

as 3 ! = 3*2*1 = 6

then : 40 320 / 120 * 6

40 320 / 720 = 56

Conclusion : there is 56 way to select 5 object among 8 of them.

ps : you can also use Pascal Triangle to do such a thing.

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2 years ago

Solve 2r ≤ 3(2r - 7)

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You have:
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3 years ago

Read 2 more answers

Plz help can anybody solve this only one question

stiks02 [169]

Step-by-step explanation:

Angle:2x+30+3x=180

Angle:2x+b+2b=180( Being in straight line)

Angle:30+3x+a=180

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3 years ago

Write an expression for the area of the shaded region in its simplest form. Show all of your steps.

patriot [66]

The area of the shaded region will be the area of the rectangle minus the area of the white square inside of it:

((x+10)(2x+5)) - ((x+1)(x+1))

First, FOIL both of the areas separately:

(2x^2 + 5x + 20x + 50) - (x^2 + x + x + 1)

Simplify within the parentheses by adding like terms:

(2x^2 + 25x + 50) - (x^2 + 2x + 1)

Now, subtract one equation from the other:

2x^2 + 25x + 50
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This will be the equation for the area.

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3 years ago

5.Find the slope of a line perpendicular to

Lemur [1.5K]

Hi there!

When the slopes of two perpendicular lines are multiplied the outcome will be -1.

The slope is the number that is positioned in front of the variable x in the formula. In this case the slope of the given line is -2/5.

Let's call the slope of the perpendicular line m and take into account the given data of the question and my earlier explanation. We then find the following:

$- \frac{2}{5} \times m = - 1$
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~ Hope this helps you!

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3 years ago