(2x -5y) + (x+y) =
2x - 5y +x + y =
3x -4y
Answer:
The Answers are
Step-by-step explanation:
Let we Know some Identities
cosec (-θ) = - cosec (θ)
sec (-θ) = sec (θ)
cot (-θ) = - cot (θ)
Also,
Therefore,
Answer:
a) The height of the image = 11.2 millimeters
b) The distance between the camera and her friend = 2.24 meters
Step-by-step explanation:
<u>Part A: find the height of the image:</u>
distance from the lens to the film = 24 millimeters
distance from the lens to the her friend = 3 meters = 3000 millimeters
height of her friend = 140 centimeters = 1400 mm
the height of the image = x
Using the similarity :
<u>Part B: find the distance between the camera and her friend</u>
If the height of the image on the film of her friend is 15 millimeters.
Let the the distance between the camera and her friend = y
Answer:
integers are { 3 , 4 , 5 }
Step-by-step explanation:
- 1 < 2x - 5 ≤ 5
- 1 + 5 < 2x - 5 + 5 ≤ 5 + 5 [ adding by 5 ]
4 < 2x + 0 ≤ 10
4 < 2x ≤ 10
2 < x ≤ 5 { divide by 2 ]
Therefore, integers are { 3 , 4 , 5 }
Answer:
Step-by-step explanation:
The position function is
and if we are looking for the time t it takes for the ball to hit the ground, we are looking for the height of the ball when it is on the ground. Of course the height of anything on the ground is 0, so if we set s(t) = 0 and solve for t, we will find our answer.
and factor that however you are currently factoring in class to get that
t = -.71428 seconds or
t = 1.42857 seconds (neither one of those is rational so they can't be expressed as fractions).
We all know that time will never be a negative value, so the time it takes this ball to hit the ground is
1.42857 seconds (round how you need to).