Answer:
Step-by-step explanation:
(A) Since, the velocity can be calculated from the distance time graph, and we can see from the graph that it is constant at every point, thus the graph has the constant velocity.
(B) Average velocity is given by: .
(C) The velocity reflected in the graph is positive in nature.
(D) The point will show that the car is not moving means that the car will cover no more distance in any interval of time, but from the graph we can see that the distance is being covered at equal intervals of time and no such horizontal path is followed, thus, the car is always moving.
Step-by-step explanation:
Answer:
There present ages are
Drex age = 17 years
Max age = 12 years
Step-by-step explanation:
Given as ,
The sum of age of Drex and Max = 29 years
And seven years ago Drex was twice as old as max
So , Let the Age of Drex = D and Max age = M
I.e (D - 7 ) = 2 (M - 7)
Or, D - 7 = 2M - 14
Or, 2M - D = 7
And Also D + M = 29
So , from both equations
(2M - D ) + (D + M) = 29 +7
Or, 3M = 36
I.e M = = 12 years
∴ The Age of Drex = 29 - M
The Age of Drex = 29 - 12 = 17 years
Hence there present ages are
The Age of Drex = 17 years
The Age of Max = 12 years Answer
Answer(s):
d= 4 (D=4) or 4=d (4=D)
Step-by-step explanation: <em>You can solve it in 2 ways.</em>
The way:
4d−4 = 5d−8
+4 +4
4d = 5d-4
-5d -5d
-1d = -4
/-1 /-1
d = 4
The
4d−4 = 5d−8
+8 +8
4d+4 = 5d
-4d -4d
4 = 1d
/1 /1
4 = d
Hope this helps. :)
Answer:
x = 2 and x = -2
Step-by-step explanation:
The easiest way is to guess. We know that you can't have a square root of a negative number. This constrains x between negative infinity to 2. Testing 2 and -2, we see that it satisfy the equation.
The more systematic approach is shown below
x= -2, 2