An area of a rectangle is simply the product of length and
its width. So the formula is simply:
A = l w
Given the equations of area and length, we can directly
calculate for w:
w = A / l
w = (27t^2-18t ) / 9t
<span>w = 3t - 2</span>
Thats reallly good for sidney
Answer:
M = 30t
Step-by-step explanation:
Given that a computer downloads 30 megabits per second for "t" seconds. That is, the rate at which the computer downloaded it is 30 megabits/second
Where time = t seconds
To Write anequation to represent the number of megabits, m, downloaded,
Rate = megabits/ time
Where
Rate = 30
Megabits = m
Time = t
Therefore, substitute all into the formula
30 = m/t
Make m the subject of formula
M = 30t
The equation is m = 30t
1st:
f(x) = x^2.
f(x +1): Anywhere we see x we replace it with (x+1)
f(x+1) = (x+1)^2 , Expand
(x+1)^2 = (x+1)(x+1) = x^2 + 2x + 1= C.
2nd:
Noting general equation, y = mx + c
m = slope, c = vertical intercept.
From the graph, slope = (2,0) and (0, -4)
= (-4 -0) / (0 - 2) = -4/-2 = 2.
Vertical intercept, c = -4.
y = mx + c , y = 2x + (-4), y = 2x - 4 = D.
3rd:
f(x) = x^2 - x, f(-4). we would substitute x = -4.
f(-4) = (-4)^2 - (-4) = 16 + 4 = 20 = D.
Cheers.
