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galben [10]
3 years ago
7

Molly wants to buy a scooter for $540. She can save $75 a week but owes her sister $60. How many weeks will it take Molly to pay

back her sister and buy the scooter?
Mathematics
1 answer:
vesna_86 [32]3 years ago
8 0

Answer:

SORRY DONT KNOW! :/

Step-by-step explanation:

:>

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You spin each spinner once. You get $50 if you spin a 2 and a vowel. You get $25 if you spin a 2 and a consonant. You get $5 if
Tom [10]

The expected value of the game is $8.75.

----------------------

  • The expected value is the <u>sum of each outcome multiplied by it's probability</u>.
  • A probability is the <u>number of desired outcomes divided by the number of total outcomes</u>.

  • The probability of spinning a 2 and a vowel is: \frac{1}{4} \times \frac{2}{8} = \frac{2}{32}.
  • Thus, \frac{2}{32} probability of getting $50.

  • The probability of spinning 2 and a consonant is: \frac{1}{4} \times \frac{6}{8} = \frac{6}{32}
  • Thus, \frac{6}{32} probability of getting $25.

  • The probability of spinning 1 and a vowel is: \frac{3}{4} \times \frac{2}{8} = \frac{6}{32}.
  • Thus, \frac{6}{32} probability of getting $5.

  • 32 - (6 + 6 + 2) = 18, thus, \frac{18}{32} probability of earning $0.

The expected value is:

E = \frac{2}{32}(50) + \frac{6}{32}(25) + \frac{6}{32}(5) + \frac{18}{32}(0)

E = \frac{100 + 150 + 30}{32}

E = \frac{280}{32}

E = 8.75

The expected value of this game is of $8.75.

A similar problem is given at brainly.com/question/24961584

8 0
3 years ago
It was estimated that 650 people would attend bowling night, but 676 people actually attended.
Cerrena [4.2K]
Simply divide 650/676=.9615 or 96.15%. So there was 3.85% error
4 0
3 years ago
11+102 +73 = 186 total killed for ivory = 186 Total killed 19 + 129 + 139 = 287. What percent of the total elephants killed does
Kaylis [27]

Answer:

64.8% of elephants were killed for ivory

Step-by-step explanation:

divide the number of elephants killed for ivory by the total number of elephants killed: 186÷287= 0.6780

multiply your answer by 100 to get a percentage: 0.6780 x 100= 67.8%

4 0
3 years ago
Alex's dog weighs 5 pounds. About how
Rina8888 [55]

Answer:

2270 grams

Step-by-step explanation:

If the dog is 5 pounds and 1 pound=454 grams, do 454x5=2270

5 0
3 years ago
Look at the picture below and answer the question that is being asked
IrinaVladis [17]

Answer:

B

Step-by-step explanation:

4 0
3 years ago
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