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Norma-Jean [14]
3 years ago
5

Please help me answer for 29, 30, 31 please

Mathematics
1 answer:
inn [45]3 years ago
6 0

Answer:

29. f(10) = 0.0078

30. f(5)=40.5

31. f(2)=6

Step-by-step explanation:

Question 29:

Given:

f(n)=4\times (\frac{1}{2})^{n-1}

Plug in 10 for n. This gives,

f(10)=4\times (\frac{1}{2})^{10-1}\\f(10)=4\times (\frac{1}{2})^{9}=0.0078

Therefore, the tenth term is 0.0078.

Question 30:

Given:

f(n)=\frac{1}{2}\times 3^{n-1}

Plug in 5 for n. This gives,

f(5)=\frac{1}{2}\times 3^{5-1}=\frac{1}{2}\times 3^4=\frac{1}{2}\times 81=40.5

Therefore, the fifth term is 40.5.

Question 31:

Given:

f(1)=2, f(n)=f(n-1)+4

Plug in 2 for n. This gives,

f(2)=f(1) + 4\\f(2)=2+4=6

Therefore, the second term is 6.

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The angle of elevation from a soccer ball on the ground to the top of the goal is 34. If the goal is 8 ft tall, what is the dist
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