All categories

4 years ago

A fair coin is tossed three times.

Mathematics

2 answers:

qaws [65]4 years ago

6 0

B 2/3
A 3/3. Hsheikdkekekekld

Aleks04 [339]4 years ago

3 0

A. Since the tosses are independent, we can just calculate the probability of obtaining one head and repeating that 3 times. Obviously, the probability of getting a head for one toss is 1/2, our answer is 1/2⋅1/2⋅1/2=1/8

B. Suppose you have a fair coin: this means it has a 50% chance of landing heads up and a 50% chance of landing tails up. Suppose you flip it three times and these flips are independent. What is the probability that it lands heads up, then tails up, then heads up? So the answer is 1/8, or 12.5%.

~*"AUBA14"*~

You might be interested in

A peer is having difficulty finding angle measures using trigonometric ratios in a right triangle. Create an example to demonstr

frosja888 [35]

Please see diagram:
A right triangle has 3 main trigonometric ratios. These ratios are the relationships between different sides of the triangle, how large one side is compared to the other side. If you have every angle, in degrees, of a triangle, then you can figure out the relation between the lengths of the three sides. Additionally, you can figure out the value of the angles, given the sides of the triangle.
In the diagram, we are interested in the trigonometric ratios with respect to angle a.

You see in the diagram that sine, cosine, and tangeant are described as their ratios: (one way to remember: SohCahToa
sine = opposite / hypotenuse
cosine = adjacent / hypotenuse
tangeant = opposite / adjacent.

cosecant, secant, and cotangents are just the reciprocals of these ratios:
cosecant = 1 / sin
secant = 1 / cosine
cotangeant = 1 / tangeant

8 0

3 years ago

A grocery store sells snacks by weight 6 ounce bag of mixed nuts cost $3.60 predict the cost of two ounce bag

VARVARA [1.3K]

Answer:

1.20

Step-by-step explanation:

you divide the orginal cost by 3

4 0

3 years ago

Read 2 more answers

An artist combines copper and other metals to make bronze. A bronze sculpture

natka813 [3]

Answer:

The dolphin statue is 86% copper, while the bird statue is 83% copper, making the dolphin sculpture more coppery.

Step-by-step explanation:

Since an artist combines copper and other metals to make bronze, and a bronze sculpture of a dolphin contains 43 g of copper for every 7 g of other metals, while a bronze sculpture of a bird contains 83 g of copper for every 17 g of other metals, to determine which sculpture is more coppery the following calculation must be performed:

Dolphin:

43 + 7 = 50

50 = 100

43 = X

43 x 100/50 = X

86 = X

Bird:

83 + 17 = 100

100 = 100

83 = X

83 x 100/100 = X

83 = X

Therefore, the dolphin statue is 86% copper, while the bird statue is 83% copper, making the dolphin sculpture more coppery.

3 0

4 years ago

An A-frame house is 45 feet high and 32 feet wide. Find the measure of the angle that the roof makes with the floor. Round to th

Flura [38]

Answer:

Angle, $\theta=70.4^{\circ}$

Step-by-step explanation:

We have, an A-frame house is 45 feet high and 32 feet wide. It is required to find the measure of the angle that the roof makes with the floor.

The attached figure shows the A frame. Let $\theta$ is the angle that the roof makes with the floor. So,

$\tan\theta=\dfrac{45}{16}\\\\\tan\theta=2.81\\\\\theta=\tan^{-1}(2.81)\\\\\theta=70.4^{\circ}$

So, the angle of 70.4 degrees is the angle that the roof makes with the floor.

4 0

3 years ago

8+ 6+ 4+ 2+ 2 ++ 6 8 -8 -6 -4 2 ܠܛ -4+ -6+ -8+ What is the equation of the line?

VMariaS [17]

The lines whose equation is x = a, are vertical lines that pass through the point (a, y) where y is any real number. Additionally, vertical lines have an indefinite slope.

You can see it in the graph of this equation:

5 0

2 years ago