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1 year ago

U should donate to khan academy: )

Mathematics

1 answer:

Ulleksa [173]1 year ago

7 0

Answer:

We will be donating to Khan to help more and more students learn.

Sincerely Student team at Adams HS, MI

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grandma's cake recipe calls for 2 cups of flour and 3 ounces of oil.how many ounces of oil would be needed for 15 cups of flour?

podryga [215]

42 ounces of oil would be needed

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2 years ago

Solve for x.<br><br> −1/5 (x − 4) = −2

denpristay [2]

X=14. Hope this helped!

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3 years ago

Read 2 more answers

ALGEBRA! NEED HELP!

grigory [225]

The base's length is 8 and it's width is 7, so it's perimeter will be $2\cdot (7+8)=30$ . To find the lateral area you shoul multiply this with it's height. So, $30\cdot h=150\\ h=\frac { 150 }{ 30 } \\ h=5$ (h is height).

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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.

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3 years ago

I need help before 10:00pm tonight

Citrus2011 [14]

The answer is B. The data is similar throughout the line.

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3 years ago