Answer:
Distance = 500 miles
Step-by-step explanation:
<u>Step 1: Write the data of speed, distance and time for aeroplane and automobile.</u>
<em>Automobile:</em>
Speed = r
Time = 10 hours (3 am till 1 pm)
Distance = SxT
Distance = r x 10 = 10r
<em>Aeroplane:</em>
Speed = 200 + r (200 mph more than automobile)
Time = 2 hours ( 11 am till 1 pm)
Distance = SxT
Distance = 2x(200+r) = 400+2r
<u>Step 2: Equate both distances to find the value of r</u>
Distance of automobile = Distance of aeroplane
10r = 400 + 2r
8r = 400
r = 50
<u>Step 3: Find the distance using any one equation</u>
Distance of automobile = 10r
r = 50
Distance = 10 x 50 = 500 miles
Therefore, the plane travels 500 miles.
!!
Answer: A. 48N
Step-by-step explanation: from Newton's third law of motion which states that action and reaction are equal and opposite. So this means that a person will get back same magnitude of force which he or she has exerted
Answer:
Step-by-step explanation:
Do you remember the formula so that you can solve this problem??
We have a property for odd functions, which is given below. Let f(x) be an odd function then it must satisfy the below - mentioned property.
Now, we have been given the function 
For this function to be odd, it must satisfy the above written property.
Replace x with -x, we get
And, we have to also find
Hence, in order to the given function to be an odd function, we must determine whether 9-4(-x)^2 is equivalent to -(9-4x^2) or not.
Therefore, C is the correct option.
