Step-by-step explanation:
The displacement of a particle d (in km) as a function of time t (in hours) is given by :
Displacement at t = 4 hours,
Velocity of particle is given by :
Velocity at t = 4 hours,
Acceleration of the particle is given by :
At t = 4 hours,
Therefore, the displacement, velocity and acceleration at t = 4 hours is 205 km, 136 km/h and 58 km/h² respectively.
Answer:
(x,y) right arrow (negative x , y)
Step-by-step explanation:
Mathematically, when we reflect a point over the x-axis; we have a result
The result is that the x- coordinate of the point reflected takes up a negative value
so what we have here is that;
(x,y) becomes (-x,y) once reflected over the y-axis
So, traditionally, we add the arrow
So our answer is thus;
(x,y) right arrow (negative x , y)
Answer:
Area = 60
Step-by-step explanation:
(h b)/2
h = 10
b = 12
12 x 10 = 120
120/2 = 60
(h = height and b = base)
Because
is singular, we have
from which it follows that either
or
.
Answer:
240naira
Step-by-step explanation:
The board measures 2½m by 1¼m
The area of the board is;
2½× 1¼ = 5/2 × 5/4 = 25/8 m²;
But 25/8 m² cost 750 naira;
Therefore 1m² cost 750 / 25/8
750 × 8/25 =
30 × 8
240naira
