Answer:
The answer is below
Step-by-step explanation:
The standard form of the equation of an ellipse with major axis on the y axis is given as:
Where (h, k) is the center of the ellipse, (h, k ± a) is the major axis, (h ± b, k) is the minor axis, (h, k ± c) is the foci and c² = a² - b²
Since the minor axis is at (37,0) and (-37,0), hence k = 0, h = 0 and b = 37
Also, the foci is at (0,5) and (0, -5), therefore c = 5
Using c² = a² - b²:
5² = a² - 37²
a² = 37² + 5² = 1369 + 25
a² = 1394
Therefore the equation of the ellipse is:
Answer:39 years ago
Step-by-step explanation:The difference between his age and his sister's is 4.So when he was 8 she 4.So you do 47-8 which is 39.
Use a calculator to get your answer
Answer:
3 cm
Step-by-step explanation:
The formula for the area of a circle is:
Where "r" represents the radius of the circle. We can substitute the given value for Area into the equation to solve for the radius.
<h3>Solve for Radius</h3>
Divide both sides by π
Take the square root of both sides
The radius of the circle is 3 cm.
A side of right triangle lying against an angle of 30 degrees is equal to half of the hypotenuse, so
s=4×2=8
Answer: s=8
