9514 1404 393
Answer:
geometric sequence
Step-by-step explanation:
The terms of the sequence have a common ratio of -12/3 = -4, so the sequence is geometric. The general term is ...
an = 3(-4)^(n-1)
so the sum can be written as ...

(Note the summation starts at n=0, corresponding to a first term of 3.)
Answer:
1. $60 2. $233.20
Step-by-step explanation:
That is the answer
Answer:


Step-by-step explanation:
Given
The attached image
Solving (a): The area (one side up)
This is calculated as:
Area= Area of semicircle + Area of rectangle
So, we have:

Where:
--- the rectangle dimension
--- the diameter of the semicircle
So, we have:





Solving (b): Area when both leaves are up.
Simply multiply the area in (a) by 2


Answer:
Step-by-step explanation:
Length of the garden = 4 - 21*x - 28*y
Width of the garden = -6*x*y
Perimeter of the garden = 2*(Length + Width)
P = 8 - 42*x - 56*y - 12*x*y
8(8x64^2-1) factorises the lhs.
how it's equal to zero is beyond me