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Taya2010 [7]
3 years ago
14

Find the sum of the geometric sequence. (1 point) 1, one divided by two, one divided by four, one divided by eight, one divided

by sixteen
Mathematics
2 answers:
Firlakuza [10]3 years ago
6 0
GP = 1/2 , 1/4 , 1/8 , 1/16
1st) the common ratio is (1/4 : 1/2 ) = 1/2, so r =1/2
2nd) the sum of a GP is:

S= a(1-rⁿ)/(1-r)

S=(1/2).[1-(1/2)⁴]/(1-1/2) = 15/16

Vinvika [58]3 years ago
4 0

Answer:

31/16

Step-by-step explanation:

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Step-by-step explanation:

What is the sum of the series 5^n from n=1 to 4.

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3 years ago
A local high school has both male and female students.
Kitty [74]

Answer:

a. P(male) = 0.4

b. P(no sport and male) = 0.1

c. Unclear question (isn't it the same as b.?)

Step-by-step explanation:

The data below is what I've worked according to, which isn't very clear from the question so the answers are only correct if this is the correct table of data;

\left[\begin{array}{ccc}&No \ Sports&Sports\\Female&10&32\\Male&7&21\end {array}\right]

a.

P(male) = \frac{7 + 21}{70} \\\\ = \frac{28}{70} \\\\ = \frac{2}{5}

b.

Using the tree diagram in the picture;

P(no \ sport \ and \ male) = \frac{2}{5} * \frac{1}{4} \\\\ = \frac{1}{10}

8 0
2 years ago
A jacket that cost a store $120 was marked up to $168. What percent was the mark up?
german

Answer:

48%

Step-by-step explanation:

you have to subtract 168 and 120

8 0
3 years ago
Read 2 more answers
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