Answer:
17
Step-by-step explanation:
Assuming the field is a rectangle, the perimeter is found through the equation:

Since we know the perimeter and width, we can substitute and solve for the length.

Using the length and width, we can find the area.

The area is 2976 squared meters. We divide by the area a bag of canola seed can cover and round up if necessary to find the total number of bags.

Because we need a whole bag in order to cover for the decimal area, we round up to 17 bags.
Answer:
2.0
Step-by-step explanation:
Couldn't really understnd what you wrote but I'll assume it's the standard deviation of a fair, 7-sided die
The standard deviation is just the square root of the variance (which is just the second moment minus the first moment squared)
The first moment (AKA the average is..)

The second moment is..


Second one
<span>7/21
Hope it helps
</span>
Answer:
The answer is 8 : 22, 12:33 as they are two equelivant ratios 11 and 4
Answer:
a) 
b) 
c) term number 17 is the one that gives a value of 40
Step-by-step explanation:
a)
The sequence seems to be arithmetic, and with common difference d = 3.
Notice that when you add 3 units to the first term (-80, you get :
-8 + 3 = -5
and then -5 + 3 = -2 which is the third term.
Then, we can use the general form for the nth term of an arithmetic sequence to find its simplified form:

That in our case would give:

b)
Therefore, the term number 20 can be calculated from it:

c) in order to find which term renders 20, we use the general form we found in step a):

so term number 17 is the one that renders a value of 40