Answer:
aₙ = -2ⁿ⁻¹
Step-by-step explanation:
Your geometric series is
-1,-2,-4, …
The first term (a₁) is -1, and each successive term is twice the one before it (the common ratio, r)
The formula for the nth term of a geometric series is
aₙ = a₁rⁿ⁻¹
The general formula for your series is then
aₙ = -2ⁿ⁻¹
Answer:
12 square units
Step-by-step explanation:
The answer might be a little easier to see if we slide that triangle on the left over to turn this shape into a rectangle! This is a technique you can apply to any parallelogram. Looking at the newly constructed rectangle, we can find its area by multiplying its length (2) and width (6) for an area of 2 · 6 = 12 square units.
Answer:
a.) 10% is correct. If you add them all together it's 50 pennies. Lincoln and steel pennies equal 10 and 10 of 50 is 10%
Answer:
x = 1 and y = 2
Step-by-step explanation:
because 100(1) + 50(2) = 100 + 100 = 200