21/12 is equal to 1 3/4 hope this helps!
Answer:
To lift an object, you must pull upward on the object with a force greater than the object’s weight.
Answer:
S₁₀ = 241.5837 m
Explanation:
If
h₁ = 2*32 in = 64 in
h₂ = 0.75*h₁ = (0.75)*64 in = 48 in
h₃ = 0.75*h₂ = 0.75*(0.75*h₁) = (0.75)²*h₁ = (0.75)²*64 in = 36 in
h₄ = 0.75*h₃ = 0.75*(0.75*h₁) = (0.75)³*h₁ = (0.75)³*64 in = 27 in
...
h₁₀ = 0.75*h₉ = (0.75)⁹*h₁ = (0.75)⁹*64 in = 4.8054 in
It is a geometric sequence (geometric progression) where the common ratio is
r = 0.75
Finding the sum of terms in a geometric progression is easily obtained by applying the formulas:
10<em>th</em> partial sum of a geometric sequence
S₁₀ = h₁*(1 - r¹⁰) / (1 - r)
⇒ S₁₀ = 64*(1 - 0.75¹⁰) / (1 - 0.75)
⇒ S₁₀ = 241.5837 m
