Answer:


Step-by-step explanation:
Write the system


Solve by Elimination.
multiply the second equation by -3.


Add the Equations.


Plug this back in one of the equations.


Answer: 42.21 km
Step-by-step explanation:
We can solve this using trigonometry, since we have the following data:
is the the angle of elevation
is the horizontal distance between the plane and the radar station
is the hypotenuse of the right triangle formed between the radar station and the airplane
Now, the trigonometric function that will be used is <u>cosine</u>:
because
is the adjacent side of the right triangle
Finding
:
Answer:
17.9 units is the answer
Step-by-step explanation:
points are (-7,-2) and (9,6)
Pythagorean theorem can be written as,

Rounding off,
d = 17.9 units
Answer:
Step-by-step explanation:
8,6,2, and 1
(2^6 / 8) * 1 = (64/8) * 1 = 8 * 1 = 8
Answer:
84%
Step-by-step explanation:
Joey gives 21 correct answers out of 25 questions on a quiz.
We have to calculate the percent of Joey's correct answer.
Now, percentage of x out of y is given by the simple expression
%.
Hence, the percentage of correct answer given by Joey is given by
%. ( Answer )