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Pepsi [2]
2 years ago
5

You are dealt one card from a satndard 52-card deck. Find the probability of being dealt an ace or a 7

Mathematics
1 answer:
ruslelena [56]2 years ago
3 0

Answer:

2/13    or  15.38%

Step-by-step explanation:

Number of Aces in a deck = 4

Number of 7s in a deck = 4

Number of cards in a deck = 52

Probability of A or 7 = (4 Aces + 4 Sevens) / 52 cards                                          8 cards / 52 cards

This simplifies to                           2/13    or  15.38%

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Approximately 9 out of every 50 people who saw a movie this week say they watched it on Netflix. Suppose we want to find the pro
uysha [10]

Answer:

<u></u>

  • <u>1. As a fraction: 9/50</u>
  • <u>2. As a proportion: x/1 = 9/50</u>
  • <u>3. As a percentage: 18%</u>

<u></u>

Explanation:

<u>1. As a fraction:</u>

Depart from the definition of probability: probability is the number of favoragle outcomes divided by the total number of possible outcomes:

  • Probability = number of movie-goers who say they watched a movie on Netflix this week / number of movie-goers that saw a movie this week

  • Probability = 9 / 50

<u>2. As a proportion:</u>

A proportion is the equality of two ratios. In this case you must set the ratio of people who say they watched it on Netflx, x, per every people who saw a movie this week, 1, equal to the ration 9 /50.

Hence, the proportion that shows the probability is:

  • x / 1 = 9 / 50

Where x is the probability.

<u>3. As a percentage</u>

You just have to multiply the probability by 100:

  • (9/50) × 100 = 18%
6 0
2 years ago
Which expressions are equivalent to 9b?
djverab [1.8K]

Answer:

A. b+2(b+2b)

b + 2b + 4b = 7b

B. 3b + b = 4b

C. 2(2b) = 4b

None of them are equal to 9b

6 0
2 years ago
Read 2 more answers
Please complete the system of equations.
kogti [31]

Answer:

x=-1,y=0

Step-by-step explanation:

-10y+9x=-9

10y+5x=-5

14x=-14

x=-1

-10y-9=-9

y=0

8 0
2 years ago
HELP ME WHAT THE ANSERW Lisa has a scholarship for all four years she attends collage what is the total amount of the scholarshi
krok68 [10]
12,000 × .75= 9,000 then multiply by 4. Your total is 36,000
8 0
3 years ago
Eight less than a number is seventy-five. What is the number? -67 67 83
frozen [14]

8-75 = x

x=8+75

x= 83

 the number is 83

5 0
3 years ago
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