Given with the function of x which is f(x)=15x² + 360, we are tasked to solve for the value of x. The solution was discussed and shown below:
Set x=0, then we have:
0=15x² + 360
Transpose 360
15x²= -360
Divide by 15
x²= -360/15
x²= - 24
x = sqrt 4*6i
Therefore, the answer is letter B.
Answer:
The distance is 9
Step-by-step explanation:
Distance formula: ![\sqrt{(x_{2}-x_{1} )^{2}+(y_{2} -y_{1})^2 }](https://tex.z-dn.net/?f=%5Csqrt%7B%28x_%7B2%7D-x_%7B1%7D%20%29%5E%7B2%7D%2B%28y_%7B2%7D%20-y_%7B1%7D%29%5E2%20%20%20%7D)
Plug in the points:
![\sqrt{(2-(-7))^{2}+(3-3)^2 } = \sqrt{(9)^{2}+(0)^2 } = \sqrt{(9)^2} = 9](https://tex.z-dn.net/?f=%5Csqrt%7B%282-%28-7%29%29%5E%7B2%7D%2B%283-3%29%5E2%20%20%20%7D%20%3D%20%5Csqrt%7B%289%29%5E%7B2%7D%2B%280%29%5E2%20%20%20%7D%20%3D%20%5Csqrt%7B%289%29%5E2%7D%20%3D%209)
The answer to this is - + 3
In dry air the sound travels with 331,2 m/s
in 3*10^10 the distance will be 3*331,2*10^10 m=9936*10^9 m=9936*10^6 km