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Bas_tet [7]
3 years ago
9

ind the surface area of a sphere with a radius of 12 cm. Approximate as 3.14 and round your answer to the nearest hundredth

Mathematics
1 answer:
Bezzdna [24]3 years ago
5 0
The surface area of a sphere is:

A=4πr^2, if r=12 and π is approximated as 3.14 then

A≈4(3.14)(12^2)

A≈4(3.14)(144)

A≈576(3.14)

A≈1808.64 cm^2
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Nimfa-mama [501]
The general equation of <span>an ellipse:
\frac{(x-h)^2}{a^2} + \frac{(y-k)^2}{b^2} =1&#10;

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by graphing the points ⇒⇒⇒ attached figure 1
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the minority axis is the line connecting </span><span><span>(–4, 2), and (2, 2)</span> and has a distance = 6
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∴(h,k) = (-1,2)
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</span>
\frac{(x+1)^2}{9} + \frac{(y-2)^2}{16} =1&#10;
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<span>A hyperbola with vertices (9, 3) and (5, 3) ⇒⇒⇒⇒ blue points
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8 0
3 years ago
Simplify....................
seraphim [82]

Use BEDMAS:

B - Brackets

E - Exponents

D - Division

M - Multiplication

A - Addition

S - Subtraction


\dfrac{5^2-10}{17-3\cdot4}-1=\dfrac{25-10}{17-12}-1=\dfrac{15}{5}-1=3-1=2

3 0
4 years ago
1p
goblinko [34]

Answer:

O 81 km per hour

Explanation

Given parameters:

Number of days traveled  = 3 days

Distance covered on the first day  = 1080km

Time of travel  = 10hrs

Rate of travel  = 108km/hr

Time of travel on second day = 12hrs

Rate of travel  = 90km/hr

Time of travel on third day  = 18hrs

Rate of travel  = 60km/hr

Unknown

Average speed  = ?

To find the average speed, we sum the distances and divide by the sum of the time.

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we do not know the second and third distances;

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D2  = 90 x 12 = 1080km

D3  = 60 x 18  = 1080km

    Now;

  Average speed  = \frac{1080 + 1080 + 1080 }{10 + 12 + 18 }

 

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The average speed is 81km/hr

6 0
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Answer:

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Step-by-step explanation:

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3 0
3 years ago
Read 2 more answers
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Answer:

1792

Step-by-step explanation:

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Please Mark Me Brainliest

4 0
3 years ago
Read 2 more answers
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