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3 years ago

A coin is flipped 20 times.the results are 12 heads up and 8 tails. Determine the theoretical probability of getting heads.

Mathematics

1 answer:

natulia [17]3 years ago

3 0

Answer: I’m not sure wouldn’t it be 12 to 8 and then make that into a percentage

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Need help please I would really appreciate it

Nataly_w [17]

Answer:

The slope of line is 9

Step-by-step explanation:

We can use two pairs of input-output from the table to find the slope of the given line. Here x is input and y is output.

Slope is defined as the steepness of a line and is given by the formula:

$m = \frac{y_2-y_1}{x_2-x_1}$

Selected pairs from table are:

(-1,-18) and (0,-9)

Here

$x_1 = -1\\x_2 = 0\\y_1 = -18\\y_2 = -9$

Putting the values in the formula

$m = \frac{-9-(-18)}{0-(-1)}\\=\frac{-9+18}{0+1}\\= 9$

Hence,

The slope of line is 9

6 0

3 years ago

1) Find the Range of the following number set: (22,7, 22, 1, 7, 18, 18, 16, 6, 6} 2 points

lisabon 2012 [21]

Answer:

RANGE=21

Step-by-step explanation:

Least to greatest is KEY!

7 0

3 years ago

Find x.______________a0

velikii [3]

Answer:

$x=4$

Step-by-step explanation:

Before we find x, we need to set up this triangle a little more. We need to find the triangle's altitude before we can solve for x. We will use the heartbeat method to find the altitude.

Let altitude = y; solve for y:

$\frac{2}{y}=\frac{y}{6}$

$y^2=12$

$y=\sqrt{12}$

$y=2\sqrt{3}$

Now that we know the altitude, we can use the Pythagorean Theorem to find the hypotenuse (x).

$a^2+b^2=c^2$

$2^2+(2\sqrt{3})^2=c^2$

$4+12=c^2$

$c^2=16$

$c=4$

Since c and x are the same; c is just the hypotenuse in the Pythagorean Theorem.

$x=4$

4 0

3 years ago

A single card is selected from a deck. find the probability that it is a queen or a black card.

s2008m [1.1K]

52 cards in a deck. 4 of those are queens. 52/2=26 (total # of black cards), 2 red queens. Total + of cards you could possibly draw as the favored car = 28 out of 52...,

This is where i lose the probability. It's greater than 50%. I hope this helps.

8 0

3 years ago

Evaluate the expression 2b to the third power+ 5 when b=5

Andrej [43]

Answer:

1005

Step-by-step explanation:

10 to the third power + 5 =

1000 + 5 =

1005

Hope that helps!

7 0

3 years ago