Las funciones trigonométricas se utilizan fundamentalmente en la solución de triángulos
rectángulos, recordando que todo triángulo rectángulo tiene un ángulo de 90° y sus ángulos
interiores suman 180°. La notación que se acostumbra es la siguiente.
Answer:
B) The sample size was 100
Step-by-step explanation:
Number of sample size in January = 100
Number of sample size in March = 100
Number of sample size in June = 100
Number of sample size in September = 100
The average sample size for the study = (100 +100+100+100)/4
= 400/4
= 100
So the average sample size for the study is 100 women between 18 to 21 years.
Answer:
x=47is your answer
3x-11=130(alternate angle)
3x=130+11
x=141/3=47
Answer: 9 and 16
Step-by-step explanation:
Say one of the numbers is x and the other is y.
Set up a system of equations:

Move around the first equation so that you can plug it in to the second equation.

Plug it into the second equation.

Solve it out.



Use the quadratic formula to solve for y.

Now plug it in and test out the values of each.
Let's do the first one first.

Wow! We can see that it is equal to the 2nd y value we produced.
But let's double check.

We are correct. The order of x and y doesn't matter because we can see that the two numbers are 9 and 16. Hope that helps.