Area of semicircle = (πr²) ÷ 2
Area of semicircle:
= (3.14)(2)² ÷ 2
= (3.14)(4) ÷ 2
= 12.56/2
= 6.28
Presumably, the coin tosses are independent of one another, so
![P(\text{exactly 4 heads}\mid\text{first flip is tails})=P(\text{exactly 4 heads})=\dfrac1{2^4}=\dfrac1{16}](https://tex.z-dn.net/?f=P%28%5Ctext%7Bexactly%204%20heads%7D%5Cmid%5Ctext%7Bfirst%20flip%20is%20tails%7D%29%3DP%28%5Ctext%7Bexactly%204%20heads%7D%29%3D%5Cdfrac1%7B2%5E4%7D%3D%5Cdfrac1%7B16%7D)
But if the coin flips are not independent, then we can't really say anything about this probability without any more information about how the flips are related...
1. Rewrite the equation in the form x2 +bx<span> = </span>c.
2. Add to both sides the term needed to complete the square.
3. Factor the perfect square trinomial.
<span>4. Solve the resulting equation by using the square root property.</span>
Answer:
20x+340
Step-by-step explanation:
20(x+17)
Using distributive property
(20×x)+(20×17)
20x+340
The A/= it means the answer is okay.