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2 years ago

Brainliest if all answers are correct! part a, b and c in pictures

Mathematics

2 answers:

Gennadij [26K]2 years ago

8 0

Im sorry but i only know part b
10/12 - 3/8
Find the lcd which is 24
10/12 = 20/24
3/8 = 9/24
20/24 - 9/24 = 11/24

podryga [215]2 years ago

8 0

Regarding Part A, I believe it is asking for you to just follow what the previous problem solver did, except put it into decimal form, allowing for you to estimate :)

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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

Mama L [17]

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):

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4 years ago

Students are given 3 minutes to complete each multiple-choice question on a test and 8 minutes for each free-response question.

weqwewe [10]

Answer:

8(15-m)

Step-by-step explanation:

By looking at the options, we can understand that the right one is 8(15-m), since we need to multiply the time by the number of question.

Also, we can check that result by arranging an equations usint the total time.

55 = 3m - 8(15-m)

55 = 3m - 120 + 8m

55 = 11m - 120

55 + 120 = 11m

175 = 11m

m = 175/11 = 15.91

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3 years ago