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Dmitriy789 [7]
3 years ago
14

A coin is tossed 20 times. It lands on heads 9 times. What is the P(H) according to your experiment? Write your answer as a frac

tion, decimal, and percent.
Mathematics
1 answer:
Mama L [17]3 years ago
8 0

Answer:

\frac{9}{20}=0.45=45%

Step-by-step explanation:

Probability is found by first forming a fraction where the numerator represents the number of desired outcomes and the denominator represents the total number of outcomes.  In this case, the desired outcomes is the amount of times the coin lands on heads (9) and the total outcomes is the number of times the coin is tossed (20):

\frac{9}{20}

Divide numerator by denominator to get a decimal: 9÷20= 0.45

Multiply the decimal by 100 to get a percent: 0.45 x 100 = 45%

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Peter scored 30 goals at soccer practice. His ratio of goals to misses was 6:7. How many times did he miss?
Fiesta28 [93]
Goals=30
the ratio is 6 units to 7 units
goals=6 units
goals=30
30=6 uints
divide by 6
5=1 unit
so miss=7 units
5 per unit times 7 units=35
answer is 35 miss
6 0
2 years ago
Read 2 more answers
Plz help meeeeeeeeeee
PSYCHO15rus [73]

Answer:

Please check the explanation.

Step-by-step explanation:

We know the equation

y = kx

k = y/x

where k is the proportionality constant

so,

First ratio can be calculated as

Miles = 45

Hours = 3/4

The ratio = 45 / (3/4)

                = (45 × 4) / 3

                = 180/3

                = 60

Thus, the proportionality constant = 60

Thus, the remaining ratios can be calculated as:

The Pair (135, Hours)

135/Hours = 60

Hours = 135 / 60

           = 27/12

           = 9/4

           = 2.25

Thus, the pair is (135, 2.25)

The Pair (Miles, 3)

Miles/3 = 60

Miles = 60×3

         = 180

The Pair (90, Hours)

90/Hours = 60

Hours = 90 / 60

          = 3/2

          = 1.5

Thus, the complete table:

Miles           45           135           180             90

Hours           3/4          9/4           3                 3/2

Verification:

Miles / Hour =  45/(3/4) = 60

Miles / Hour = 135 / 2.25 =  60

Miles / Hour = 180 / 3 = 60

Miles / Hour  = 90 / 1.5 =  60      

8 0
2 years ago
Jack Purchased a new iPhone for $300. It is expected to lose 25% of its value each
asambeis [7]

Answer:

94.92

Step-by-step explanation:

300*(75/100)^4=94.92

8 0
3 years ago
keeping in mind the role the order of precedence plays in equations, what would excel display as the result of the following equ
Alex73 [517]
The answer to youre question is 5.5
8 0
3 years ago
Simplify the numerical expression. 125.7 - (-1.82).
sergey [27]
125.7 - ( - 1.82 )
125.7 + 1.82 
127.52
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3 years ago
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