Answer:
x = 7, y = 6
Step-by-step explanation:
solve for y for the first equation
2x + y = 20
-2x -2x , eliminate 2x
y = 20-2x
now that we have found y, substitute the y in for the second equation
-5y = -6x + 12
-5(20-2x) = -6x + 12, we just changed y into 20-2x. remember that we are multiplying all of 20 - 2x by -5
-100+10x = -6x + 12, we multiplied everything from the parathesis by -5
+100 + 100, eliminate -100
10x = -6x + 112
+6x +6x , eliminate 6x
16x = 112 , solve for x
x = 7
then y = 20 - 2x = 20 - 2*7 = 6
check:
2 * 7 + 6 = 20
20 = 20
-5 * 6 = -6 * 7 + 12
-30 = -42 + 12
-30 = -30
Given :
The angle of depression is 30 degrees from the bottom of the boat to a
deep sea diver a the depth of 120 ft.
To Find :
The distance x the diver must swim up to the boat to the nearest foot.
Solution :
Let, distance between diver and boat is x.
So,
Therefore, distance the diver must swim up to the boat to the nearest foot is 240 foot.
Hence, this is the required solution.
Hdkdfddt is my birthday and my mama and I wanna go play basketball season and get a free ride home and I can get them out and come get back with us to
Answer:
f(x) = 5x
f(-1) = 5(-1)
f(x) = -5
answer: <em>f(x) = -5</em>