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3 years ago

John flips 10 coins and lays them out in a straight line.

Mathematics

1 answer:

belka [17]3 years ago

3 0

For every coin, two options are possible. The formula for calculting all possibilities is $p^{t}$ where p is possibilities per time and t is times.

Therefore, there are $2^{10}$ which is 1024 combinations.

The formula for calculating probability is $\frac{w}{t}$ where w is the ways to achieve the desired outcome, and t is the total outcomes possible.

Therefore, there is a $\frac{1}{1024}$ chance of flipping ten tails.

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Heather, Eric, and Chang sent a total of 116 text messages over their cell phones during the weekend. Chang sent 3 times as many

notka56 [123]

Answer:

Step-by-step explanation:

Declaration

Let Heather's number of messages = x

Let Eric's number of messages = x + 9

Let Chang's number of messages = 3(x +9)

Equation

x + x + 9 + 3(x + 9) = 116

Solution

x + x + 9 + 3(x + 9) = 116 Remove the brackets

x + x + 9 + 3x + 27 = 116 Combine like terms

x + x + 3x + 9 + 27 = 116

5x + 36 = 116 Subtract 36 from both sides

5x + 36 - 36 = 116 - 36 Combine

5x = 80 Divide both sides by 5

5x/5 = 80/5

x = 16

Answer

Heather = 16

Eric = 16 + 9 = 25

Chang = 3*25 = 75

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2 years ago

Bob is throwing a party. He had 22 pints of soda. At the end of the party, there are 8 pints of soda. How many cups of soda were

Ksivusya [100]

Answer:

14 pints were drank

Step-by-step explanation:

22 pints - 8 pints =

7 0

2 years ago

Heather purchased a new $1,500 laptop by using a credit card with a 17% interest rate. She will pay off the balance in 2 years b

olga2289 [7]

Answer:

1779.84

Step-by-step explanation:

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3 years ago

tom ate 1/4 of a pizza. He divided the leftover pizza into pieces each equal to 1/12 of the Original Pizza. After he gave some f

Bezzdna [24]

To make this easy let covert everything using a LCD.

The LCD of 1/4 1/12 and 1/6 is 12. This becomes...

Tom ate 3/12 of the pizza.
Leftover pizza = 9/12.
Slices were 1/12.
X friends got pizza.
Remaining pizza is 2/12.

if each friend got 1 piece(1/12)....
9/12(Leftovers) - 2/12(remaining) = 7/12

So 7 friends got pizza.

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3 years ago

Cameron read

Brut [27]

That doesn’t make any sense to me sorry

4 0

3 years ago