The correct answers among the choices presented above are options B and D. Two ways to verify that solutions are correct are done by graphing the equations and see where they meet and by s<span>ubstitute back into both equations. The intersection of the graph signifies the solution. Also, when after substituting the solutions to both equations and they satisfy the equality then it is correct.</span>
Answer:
2 to 3 texts in one hour
Step-by-step explanation:
15 divided by 6 is 2.5
______
Answer:
22/90.
Step-by-step explanation:
0.24444... * 100 = 24.4444...
0.244444.. * 10 = 2.44444....
Subtract:
0.244444.. * 90 = 22
So the required fraction is 22/90.
Note that x is measured in radians.
The percent difference or error between sin(x) and tan(x) is calculated as

We want this percent difference to be less than 10.4%.
Because tan(x) > sin(x) for small values of x, define

From the calculator, obtain
sec⁻¹ 1.104 = 0.4375
Answer: x = 0.4375 radians