Answer:
Because it is a rectangle, the area is expressed as A = xy, or length times width.
Because it is next to the river, he only needs to fence three sides, so F = x + 2y.
Knowing the amount of fencing available is 7500m, we get:
7500 = x + 2y solve for x
x = 7500 - 2y substitute into the area equation
A = (7500 - 2y)y distribute
A = -2y2 +7500y
You can see that this is a parabola which opens down, meaning that the point of maximum area will be at the vertex, y = -b/2a = -7500/[2(-2)] = 1875
x = 7500 - 2(1875) = 3750
A = 3750(1875) = 7,031,250 m2
Step-by-step explanation:
Answer:
The possible numbers the chemistry club could rent the room is less than 6 hours(t<6)
Step-by-step explanation:
Reservation fee = 15
Additional fee of 5 per hour
If the chemistry club wants to spend less than 45 on renting the room, let the possible number of hours be t.
t = time
15 + 5t < 45
5t < 45 - 15
5t < 30
t < 30/5
t < 6 hours
Are you able to ask your teacher?
Answer:
5.73 hours
Step-by-step explanation:
70% decay means 30% remains
.3 = (1/2)^(t/3.3)
take the log of both sides
log.3 = t/3.3 * log1/2
Divide both sides by log 1/2
log.3 / log1/2 = t/3.3
use calculator
1.736965594166206 = t/3.3
multiply both sides by 3.3
5.73198646074848 = t
rounded
t = 5.73 hours
1)28
2)21
3)26
4)21
Now you have to add the ft in mi cm
