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Sauron [17]
2 years ago
13

Need the answer quick!

Mathematics
1 answer:
elena-s [515]2 years ago
5 0
I think your answer is B. Tell me if its wrong :)
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A lottery game has balls numbered 1 through 15. What is the probability of selecting an even numbered ball or a 13?
LiRa [457]

Answer:

8 / 15

Step-by-step explanation:

Sample space = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}

Required outcome :

Even numbers = (2, 4, 6, 8, 10, 12, 14) or 13

Total required outcomes = 8

Probability = required outcome / Total possible outcomes

P(even number or 13) = 8 / 15

4 0
2 years ago
How do you rearrange the formula for the variable indicated:
PSYCHO15rus [73]

Watch closely.  I'll try to go slow:

You said                                      <u>v² = 2 g t</u>

Divide each side by  2g :    <em>v² / 2g  =       t</em>

Did you follow that ?

6 0
3 years ago
Laura's piano teacher estimated that her monthly piano practice should take her 4 3/4 hours per week. Laura said that last week
GREYUIT [131]

Answer:

432

Step-by-step explanation:

60 minutes is one hour

60 times 4=240

=240+192=432

5 0
2 years ago
Read 2 more answers
A circular running track is 1/2 mile long. Elena runs on this track, completing each lap in 1/10 of an
fomenos
The answer might be wrong but
3 0
2 years ago
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The sum of an infinite geometric series is three times the first term. Find the common ratio of this series.
adelina 88 [10]

Answer:

\frac{2}{3}

Step-by-step explanation:

The sum of an  infinite geometric series is expressed according to the formula;

S_\infty = \dfrac{a}{1-r} where;

a is the first term of the series

r is the common ratio

If the sum of an infinite geometric series is three times the first term, this is expressed as S_\infty = 3a

Substitute S_\infty = 3a into the formula above to get the common ratio r;

3a = \dfrac{a}{1-r} \\\\

cross \ multiply\\\\3a(1-r) = a\\\\3(1-r) = 1\\

open the parenthesis

3 - 3r = 1\\\\

subtract 3 from both sides

3 - 3r -3= 1-3\\\\-3r = -2\\\\r = \frac{2}{3}

<em>Hence the common ratio of this series is </em>\frac{2}{3}<em></em>

3 0
3 years ago
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