Answer:
A. Yes.
B. Yes.
C. No.
Step-by-step explanation:
A. Yes. The sum of the series, 
is the sum of a geometric series.
The first term of the series 
= 5.
The common ration or the ratio between successive terms (r) = 
(Answer)
B. Yes. The sum of the series, 
is also the sum of a geometric series.
The first term of the series 
.
The common ration or the ratio between successive terms (r) = 
(Answer)
C. No. The sum of the series, 
is not the sum of a geometric series.
The first term of the series 
.
(Answer)
Answer:
a) 12x + 22 b) 17
- x
Step-by-step explanation:
Perimeter is the sum of the each side length.
The first example is a rectangle so the (4x+8) and the (2x+3) are doubled.
(4x+8) x 2 = 8x+16
(2x+3) x 2 = 4x + 6
12x+22
(6 - 12x) + (2 + x) + (9 + 10x)
combine like-terms.
17 - x
the area and circumference ones are correct. a quadrilateral has 4 sides, so that one is incorrect. hope this helps!
Answer:
56deg
Step-by-step explanation:
A triangle has 180deg.
180 = 68 + 56 + x >> add 68 and 56
180 = 124 + x >> subtract 124 from both sides
56 = x
The missing side is 56deg
