Answer:
1. -3 - 7x 2. - 13x
Step-by-step explanation:
1.
x+5-8x-8
-3 - 7x
2.
6y-6x-7x-6y
-13x
Answer:
its right
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Answer:
Step-by-step explanation:
Answer:
6.7 /s.
Step-by-step explanation:
Initial velocity = u m/s
From the question, final velocity, v = - 2u m/s
Note - (the minus sign indicates that the direction was reversed and doubled)
t = 0.45
From equation of motion,
v = u + at
Acceleration, a = (v - u)/t
= (-2u - u)/0.45
= - 3u/0.45
Acceleration, a/Original speed, u = 3/0.45
= 6.7 /s
Answer:
Step-by-step explanation:
we know that
The equation of a vertical parabola into vertex form is equal to
where (h,k) is the vertex of the parabola
The axis of symmetry is equal to
In this problem the parabola open upward
so
the coefficient a is positive
The coordinates of the vertex will be 
(the y-coordinate is negative)
so
the equation will be of the form
