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2 years ago

HURYY PLEASE EXPLAIN ASAP!!!

Mathematics

2 answers:

Wittaler [7]2 years ago

5 0

Answer:

The answer is 527.5km^3 .

Step-by-step explanation:

The formula for cylinders is πr2h. (pie times twice the height)

3.14(12)(2)(7) = 527.52

navik [9.2K]2 years ago

4 0

$1010\pi \: {km}^{3}$

Step-by-step explanation:

The explanation is in the picture!

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Please help with a math problem :/ Please show steps...<br><br> x^2 -13x = -36

Marianna [84]

X^2 - 13 x = -36
add 36 to both sides

x^2 - 13x +36 = 0
figure out the factor
(x-4)(x-9) = 0
so (x-4) or (x-9) equals 0
so solution is
x-4=0 add 4 to both sides and get x = 4
x-9=0 add 9 to both sides and get x=9
x={ 4, 9}

4 0

3 years ago

A box has a volume of 192 cubic inches, a length that is twice as long as its width, and a height that is 2 inches greater than

ruslelena [56]

Answer:

Therefore the dimension of the cuboid is 8 inches×4 inches ×6 inches.

Step-by-step explanation:

Cuboid : A cuboid is a three dimension shape. The length ,breadth and height of a cuboid are not same.

A cuboid has 6 faces.
A cuboid contains 8 vertices.
A cuboid contains 12 edges .
The total surface area of a cuboid is

= 2(length×breadth+breadth×height+length×height) square units

The dimension of a cuboid is written as length×breadth×height.

The volume is( length×breadth×height) cubic units

Given that the volume of the box is 192 cubic inches.

Let x inches be the width of the cuboid.

Since the length is twice as long as its width.

Then length = 2x inches

Again height is 2 inches longer than width.

Then height = (x+2) inches.

Therefore the volume of the cuboid is

$=[x\times 2x\times (x+2)]$ cubic inches

$=[2x^2(x+2)]$ cubic inches

$=(2x^3+4x^2)$ cubic inches

According to the problem,

$2x^3+4x^2=192$

$\Rightarrow 2x^3+4x^2-192=0$

$\Rightarrow 2(x^3+2x^2-96)=0$

$\Rightarrow (x^3+2x^2-96)=0$

$\Rightarrow x^3-4x^2+6x^2-24x+24x-96=0$

$\Rightarrow x^2(x-4) +6x(x-4)+24(x-4)=0$

$\Rightarrow (x-4)(x^2+6x+24)=0$

Therefore x=4

Since the all zeros of x²+6x+24 =0 is negative.

Therefore breadth = 4 inches

length=(2×4) inches=8 inches

and height = (4+2)inches = 6 inches.

Therefore the dimension of the cuboid is 8 inches×4 inches ×6 inches.

8 0

3 years ago

The school sold 200 tickets to play. Student tickets are $4 and adult tickets are $6. If they made a total $930 how many of each

r-ruslan [8.4K]

$200 + \div 4 =$
$50$
$200 \div 6 =$
$33 \infty$
There was 50 student tickets sold for the play.
There was 33 infinity adult tickets sold for the play

5 0

3 years ago

58, 72, 74, 92, 84, 40, 74, 81, 76, 83 What was the maximum score earned on Mr. Hill's final exam

alexandr402 [8]

Answer:

Step-by-step explanation:

Max= biggest number, surely?

4 0

3 years ago

Altitudes are congruent segments true or false

Snezhnost [94]

Not true, at least not always. When we are talking about an isosceles triangle there will be two equal altitudes and one is different. In case of a regular triangle all the other three altitudes have equal length! :)

6 0

3 years ago