Answer:
15 is the answer
Step-by-step explanation:
20×4=80
80-65=15
Answer:
X=-1
Step-by-step explanation:
Answer:
B = (x + 7)^2 + (y +3)^2 = 4
Step-by-step explanation:
Answer:
30 trees/acre
Step-by-step explanation:
Let n = the number of trees added to 1 acre
Let Y(n) = the yield in bushels/acre
Yield in bushels/acre = [bushels/tree] x [trees/acre]
Y(n) = (40-n)*(20+n)
= 800 - 20n + 40n - n^2
= n^2 + 20n + 800 ---------------------(1)
The n-value of the vertex ( which is a peak ) is given by the formula:
n(max) = -b/2a
Putting values from equation (1) gives us
n(max) = 10
The grower started with 20 tree/acre and adds 10 more for max yield, so she should plant: 30 trees/acre
and
Maximum yield is 900 bushels/acre.
6/7 in decimal form is about 0.857
1/2 in decimal form is 0.5
1 is, of course, 1
0.857 (6/7) is closer to 1 than it is closer to 0.5 (1/2)—simply subtract to see.
Hope this helps!!
