3x+8x=3333
11x=3333
X= 303
Boys 3x,so 3*303=909
Answer: about 14pi inches
Explanation:
7 * 6.28319 = 43.9823
43.9823 / 3.14159 = 14.0000127324
Answer:
The first submarine needs to travel at a rate of [-180 – (-1,320)] ÷ 60 = 19 feet per minute.
The second submarine needs to travel at a rate of [-180 – (-1,440)] ÷ 60 = 21 feet per minute.
21 – 19 = 2, so the second submarine must travel 2 feet per minute faster than the first sub.
For this case suppose that we have a quadratic equation of the form:
![ax ^ 2 + bx + c ](https://tex.z-dn.net/?f=ax%20%5E%202%20%2B%20bx%20%2B%20c%0A)
The solution to the quadratic recuacion is given by:
![x = \frac{-b +/- \sqrt{b^2 - 4ac}}{2a}](https://tex.z-dn.net/?f=x%20%3D%20%20%5Cfrac%7B-b%20%2B%2F-%20%20%5Csqrt%7Bb%5E2%20-%204ac%7D%7D%7B2a%7D%20)
Where,
The discriminant is:
![b ^ 2 - 4ac ](https://tex.z-dn.net/?f=b%20%5E%202%20-%204ac%0A)
When the discriminant is greater than zero, then the root is positive, and therefore, we have two positive real solutions.
Answer:
B. it has two real solutions