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algol [13]
3 years ago
6

The circumference of an ellipse is approximated by…

Mathematics
1 answer:
aliya0001 [1]3 years ago
5 0

9514 1404 393

Answer:

  see attached

Step-by-step explanation:

To solve for b, undo what is done to b.

  \displaystyle C=2\pi\sqrt{\frac{a^2+b^2}{2}}\\\\\frac{C}{2\pi}=\sqrt{\frac{a^2+b^2}{2}}\\\\\left(\frac{C}{2\pi}\right)^2=\frac{a^2+b^2}{2}\\\\\frac{C^2}{2\pi^2}=a^2+b^2\\\\\frac{C^2}{2\pi^2}-a^2=b^2\\\\\boxed{b=\sqrt{\frac{C^2}{2\pi^2}-a^2}}

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Mark sold x pens for $2 each. He received less than $80 from the sale. Find the greatest possible number of pens he sold
Crank
$80-$2= $78 is the number less than $80, since the pens cost $2

78/2= 39 pens is the greatest number of pens sold

hope this helps
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3 years ago
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98 Points! Answer Quick!
timama [110]

Reason:

2. SD ⊥ HT. ∴ ∠SDH = ∠SDT =90°

3. Given (It is given in the question)

5. RHS congruence

(Here, the right angle, hypotenuse and one side of ΔSHD is congruent to that of ΔSTD).

Statement:

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(Reflexive property is used to prove congruence of triangles. This property is used when an angle or line segment is congruent to itself.)


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3 years ago
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Carmen likes to ski. The ski resort where she goes to ski got 3.2 feet of snow during a 5 day period. The average daily snowfall
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Answer:

0.64 feet or 7.68 inches of snow on average over the 5 days.

Step-by-step explanation:

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4 0
3 years ago
3x to the power of 3 + 21x squared + 36x = 0 by factoring the quadratic equation.
Diano4ka-milaya [45]

Answer:

x = 0, -4 and -3.

Step-by-step explanation:

The given expression is "3x to the power of 3 + 21x squared + 36x = 0".

We can write this expression as follows :

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Taking 3x common.

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Hence, the solution of the given quadratic equation are x = 0, -4 and -3.

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3 years ago
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Circumference of a circle is 2(pi)(r)
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