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storchak [24]
3 years ago
9

*13 points* HELP FIND THE AREA OF THE SPHERE

Mathematics
1 answer:
ANTONII [103]3 years ago
8 0

Answer:

3054  cm³

Step-by-step explanation:

recall that the volume of a sphere is given by

V = (4/3)πr³

where

r = radius

π = 3.14

We are given the diameter = 18 cm,

hence the radius = 18/2 = 9 cm

substituting this into the above equation,

V = (4/3)πr³

= (4/3)(3.14)(9³)

= 3053.63 cm³

= 3054  cm³ (to nearest cubic unit)

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if your bicycle tire has a diameter of 9 inches. how many rotations does each tire make if you travel 300 feet?
Vesnalui [34]
Step One
Calculate the number of feet traveled in 1 rotation.

Formula
C = π*d
P = 3.14
d = 9 inches = 9/12 feet = 3/4 of a foot.

C = 3.14 * 3/4 = 2.355 So that means that every time the tire turns around 1 complete turn, the distance traveled on the ground is 2.355 feet.
 
Step Two
Figure out the number of revolutions.
1 revolution = 2.355 feet
x revolutions = 300 feet.

1/x = 2.355/ 300  Cross multiply
2.355 feet * x = 1 rev * 300 feet
2.355 x = 300 rev Divide by 2.355
x = 300 / 2.355 
x = 127.39 revolutions. <<<< Answer

8 0
4 years ago
What set of reflections would carry hexagon ABCDEF onto itself?
k0ka [10]

Answer:

Took FLVS test and got it right

A. y=x, x-axis, y=x, y-axis.

Step-by-step explanation:

Took FLVS test and got it right

A. y=x, x-axis, y=x, y-axis.

8 0
3 years ago
Which graph represents an exponential function?
schepotkina [342]

Answer:

Presumably the first graph solely based on its shape.

8 0
3 years ago
Find the coordinates of the reflection: B (8,-1) is reflected over the y-axis
Stolb23 [73]

Answer:

good for u

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
PLEASE I NEED HELP!!!!!!!!
Yanka [14]

Answer:

1) x= 3i, x= - 3i

2) x= +i\sqrt{7}, x = - i

Step-by-step explanation:

1) x^2+9=0

(x+3i)(x-3i)=0

x= 3i, x=-3i

2) x^2-4=-11

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x= ±i\sqrt{7}

x= +i\sqrt{7}, x = - i

hope this helps!! :))

7 0
3 years ago
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