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3 years ago

Alinn flipped a coin 20 times. The coin landed heads up 12 times and tails up 8 times.

Mathematics

1 answer:

Ainat [17]3 years ago

5 0

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➷ (12/20) = 0.6

(8/20) = 0.4

The experimental probability of the coin landing heads up is 0.6.

B) The theoretical would be considering it a fair coin.

1/2 = 0.5

The theoretical probability would be 0.5

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2 years ago

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2) $y=25$

Part B)

1) $k=7$

2) $y=84$

Step-by-step explanation:

Part 1) x and y vary inversely and x=50 when y=5 find y when x=10 what is k?

we know that

A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form $y*x=k$ or $y=k/x$

step 1

<u>Find the value of k</u>

x=50 when y=5

substitute the values

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The equation is equal to

$y*x=250$ or $y=250/x$

step 2

substitute the value of x in the equation and solve for y

$y*(10)=250$

$y=250/10=25$

Part B) x and y vary directly and x=6 when y=42 find k what is y when x=12

we know that

A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form $y/x=k$ or $y=kx$

step 1

<u>Find the value of k</u>

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substitute the values

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The equation is equal to

$y/x=7$ or $y=7x$

step 2

substitute the value of x in the equation and solve for y

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2 years ago