Answer: The expression is,
Step-by-step explanation:
Since, the sum of an A.P. is,
Where, n is the number of terms,
a is the first term of the A.P.,
is the last term of the A.P.,
Here, we have given,
a = 102, = 159, and n = 20,
Thus, the sum of the given A.P. is,
Which is the required expression.
Answer:
103.67 dollars.
The perimeter of the garden = 2 * π * 6 feet.
So the cost is 2.75 * 12π dollars.
= 103.67 dollars.
The answer is noncollinear
k = 3
Given that y and x are directly related then the equation relating them is
y = kx ← k is the constant of variation
To find k use the condition y = 81 when x = 27
k = = = 3
-w - 11 < or = w - 5
-2w - 11 < or = -5
-2w < or = -16
w > or = -8