Answer:
Step-by-step explanation:
Let the one of the side lengths of the rectangle be 
and the other be 
.
We can write the following equations, where will be the side opposite to the wall:
From the first equation, we can isolate 
and substitute into the second equation:
Therefore, the parabola 
denotes the area of this rectangular enclosure. The maximum area possible will occur at the vertex of this parabola.
The x-coordinate of the vertex of a parabola in standard form 
is given by 
.
Therefore, the vertex is:
Plug in 
to the equation to get the y-coordinate:
Thus the vertex of the parabola is at 
. This tells us the following:
- The maximum area occurs when one side (y) of the rectangle is equal to 25
- The maximum area of the enclosure is 1,250 square meters
- The other dimension, from
, must be 
And therefore, the desired answers are:
Given:
A bricklayer is able to set 2.5 bricks in one minute.
Required:
To find the number of bricks can he set in 8 hours.
Explanation:
8 hours =480 minutes.
2.5 bricks in one minute.
So for 480 minutes,
Final Answer:
1,200 bricks can he set in 8 hours.
If we are already two thirds of the way there, there is still (one minus two thirds) one thirds of the way still to go. Providing we're moving at the same speed throughout the entire journey, we will take one third of 73/4 hours to get to Boston.
One third of 73/4 hours
=⅓ x 73/4 hours
=73/12 hours
=6 1/12 hours
Or 6 hours 1/12 of 60 minutes
=6 hours 5 minutes
Or 365 minutes to reach Boston.
Answer:
x>-5/2
Step-by-step explanation:
subtract 3 on both sides and divide the difference by -18
