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AlexFokin [52]
3 years ago
11

The diameter of the moon is about 3500 km. Approximate the surface area of the moon using the formula for the surface area of a

sphere, S = 4πr2. Write your answer in scientific notation.
Mathematics
1 answer:
Contact [7]3 years ago
4 0

Answer:

3.8465 *10^7 square kilometers

Step-by-step explanation:

The surface area of a sphere can be found using the formula SA=4\pi r^2. Since the diameter is 3500 km then its radius is half of this. 3500 divided in two is 1,750 units. Substitute r=1,750.

SA=4\pi r^2\\SA = 4 \pi (1750)^2\\SA = 4 \pi *3,062,500\\SA =38,465,000

The surface area of the moon is about 38,465,000 square kilometers. Write this is scientific notation using base. 3.8465 *10^7

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mojhsa [17]

Answer:

Under couch

Step-by-step explanation:

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Match each function with the correct translation of the parent function f(x) = |x|
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Answer:they are all straight across so drag each line to the one that is across from the equation

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3 years ago
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Given the points (3, 2) and (6, 4), which of the following are true about the line passing through these points? The line has a
Ad libitum [116K]

Answer:

The slope is 2/3 and the function is y=2/3x  which is a direct variation function.

Step-by-step explanation:

To find the slope of a line between two points, we use the equation

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m= (4-2)/(6-3)

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The slope of the line is 2/3

The equation of the line is

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Let x = -6

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3 0
2 years ago
Find the value of x and y.
zysi [14]

Answer:

<em>x = 9</em>

<em>y = 36</em>

Step-by-step explanation:

<u>Lines and Angles</u>

Triangle CDE is isosceles. This means the two angles of the base DE are congruent (have the same measure):

7x + 1 = 4x + 28

Subtracting 4x + 1:

3x = 27

Dividing by 3:

x = 9

Substituting in the expression for the angles:

7x + 1 = 7*9 + 1 = 64°

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This last angle is equal to the expression of y:

-2(3 - y) + 19 = 85

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2y = 72

Dividing by 2:

y = 36

Final answer:

x = 9

y = 36

8 0
3 years ago
The class sizes of the introductory psychology courses at a college are shown below 121,134,106,93,149,130,119,128 the college a
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3 years ago
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