Answer:
21600 letters
Step-by-step explanation:
There are 5400 seconds in 1.5 hr, so there are 135 40-second intervals. So, 160 messages multiplied by 135 time intervals is 21600 letters.
Answer:
D
Step-by-step explanation:
given
V =
bh
multiply both sides by 3 to eliminate the fraction
3V = bh ( divide both sides by h )
b =
→ D
General form of vertex of a parabola is
y = a(x - b)^2 + c where vertex = (b , c)
for this equation the vertex is at (-1,0).
the axis of symmetry is x = -1
Answer:

Step-by-step explanation:
The standard form of a complex number:


Answer:
Area of one face of the cube is 
Step-by-step explanation:
A cube is a three dimensional figure that has all of its sides equal.
A cube has six square faces:
Surface area of the cube = 
where 'a' is the side length of the cube:
Area of one face of a cube= 
For surface area of the whole cube: 500 square inches

Dividing by '6' both sides;


Area of one face of the cube is 