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Answer:
Brad average typing rate in words per minute is 21
1260 divided by 60 = 21
(In case you meant 30 minutes)
1260 divided by 30 = 42
Step-by-step explanation:
In a typing class, the average number N of words per minute typed after t weeks of lessons is
N=157/(1+5.4e^-0.12t)
N=157/(1+5.4e
−
0.12t)
. Find the time necessary to type 75 words per minute
Answer:
96 units squared
Step-by-step explanation:
The surface area of a cube can be written as 6 * (s^2)
s is the side length.
4^2 = 16.
6 * 16 = 96.
This is because the area of a cube is s^2.
There are 6 sides to a cube, so we multiply them.
Answer:
square units [one-half x squared square units]
Step-by-step explanation:
As shown in the diagram attached to this response,
Since a square has all sides equal, let the sides of the square be each of <em>a</em> units.
The area, A, of the square = a x a = a²
i.e
A = a² --------------(i)
Now,
The diagonal is x units such that applying Pythagoras rule gives;
x² = a² + a²
x² = 2a²
a² = ----------------(ii)
Substitute the value of a² in equation (ii) into equation (i) to get;
A =
Therefore, the area of the square is square units
She can multiply 4/5 by 3/5
4 3 12
___ x ___ = ____
5 5 25