3 years ago

The perimeter of a rectangle is 30 cm. The width of the rectangle is 7 cm.

Mathematics

1 answer:

kolezko [41]3 years ago

4 0

Answer:

area is 56

Step-by-step explanation:

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What is the volume of this sphere?

Natasha_Volkova [10]

Answer:

Option c. 11,488.21 cm3

Step-by-step explanation:

The picture of the question in the attached figure

we know that

The volume of the sphere is equal to

$V=\frac{4}{3}\pi r^{3}$

we have

$r=28/2=14\ cm$ ---> the radius is half the diameter

$\pi =3.14$

substitute

$V=\frac{4}{3}(3.14)(14)^{3}$

$V=11,488.21\ cm^3$

3 0

2 years ago

How do you know (2,1) is a solution to 4x +y=9

VARVARA [1.3K]

4x+y=9

4(2)+(1)=9

8+1=9

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It is a solution

8 0

3 years ago

Read 2 more answers

I need help with a math equation, it’s due by 3:00.

Vilka [71]

Answer:

2x -7

2x 4x² -14x

-1 -2x +7

Step-by-step explanation:

4x²-16x+7 factors as

(2x-7)(2x-1)

So the grid would be:

2x -7

2x 4x² -14x

-1 -2x +7

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2 years ago

The exterior angles of a hexagon are 56º, 730, 2xº, 3x°, 4x° and 5xº. Find the value of x.

Nookie1986 [14]

Answer:

x = 16.5

Step-by-step explanation:

im assuming you meant 73 degrees instead of 730.

56+73 = 129

2x+3x+4x+5x = 14x

360-129 = 231

231 = 14x

231/14 = 16.5

x = 16.5

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3 years ago

-1 whole 1/2 + (-1 whole 1/2)

OLEGan [10]

Answer:

-3

Step-by-step explanation:

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2 years ago