<h2>
Answer: 25</h2>
Step-by-step explanation:
- We have, 60% × x = 15
- or, 60/100 × x = 15
- Multiplying both sides by 100 and dividing both sides by 60, then we have x = 15 * 100/60
- x = 25
- If you are using a calculator, simply enter 15×100÷60, which will give you the answer.
<em>* Hopefully this helps:) Mark me the brainliest :) !!!</em>
(a) 4
(b) y = sqrt(9 - (9/16)x^2)
The best guess to the formula using knowledge of the general formula for an ellipse is:
x^2/16 + y^2/9 = 1
(a). An ellipse is reflectively symmetrical across both the major and minor axis. So if you can get the area of the ellipse in a quadrant, then multiplying that area by 4 would give the total area of the ellipse. So the factor of 4 is correct.
(b). The general equation for an ellipse is not suitable for a general function since it returns 2 y values for every x value. But if we restrict ourselves to just the positive value of a square root, that problem is easy to solve. So let's do so:
x^2/16 + y^2/9 = 1
x^2/16 + y^2/9 - 1 = 0
x^2/16 - 1 = - y^2/9
-(9/16)x^2 + 9 = y^2
9 - (9/16)x^2 = y^2
sqrt(9 - (9/16)x^2) = y
y = sqrt(9 - (9/16)x^2)
3.3125 you can find this answer by using a calculator
Answer:
5.1505613031
Step-by-step explanation:
hope it helps!