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Leni [432]
2 years ago
9

What is the probability of tossing a penny and landing on heads three times in a row

Mathematics
2 answers:
Dahasolnce [82]2 years ago
7 0

Answer:

\boxed {\frac{1}{8}}

Keys:

• \frac{a^x}{b^x} = \frac{?}{?}

For this problem, the exponents will be 3 since the coin is being tossed 3 times, meaning we multiply the number next to the exponent by itself the number of times the exponent says to. On the other hand, we have two sides of a coin; heads and tails, so we represent heads with the fraction of one-half.

Step-by-step explanation:

\frac{1^3}{2^3} = \frac{1}{8}

lesantik [10]2 years ago
3 0

|\Omega|=2^3=8\\|A|=1\\\\P(A)=\dfrac{1}{8}=12.5\%

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PLEASE HELP ME PLEASE PLEASE
mezya [45]
1)

Break up the irregular shape into two rectangles

12 * 4.5 = 54
2 * 5 = 10
54 + 10 = 64 cm^2

2)

Break up the irregular shape into a triangle and rectangle

24 * 8 = 192

To get the base of the triangle:
24 - 6 - 6 = 12
To get the height of the triangle:
16 - 8 = 8

1/2(12 * 8) = 48

192 + 48 = 240 yd^2

3)

Separate into triangle and semi circle

To get the base: 8 * 2 = 16

1/2(15 * 16) = 120

(pi (8)^2)/2 = 100.5

120 + 100.5 = 220.5 cm^2

4)

Separate half circle from rectangle

(pi (7.5)^2)/2 = 88.4

7 * 15 = 105

88.4 + 105 = 193.4 m^2

5)

Separate triangle from trapezoid

2.8 * 7 = 19.6

(7+9/2)(3.6) = 28.8

19.6 + 28.8 = 48.4 ft^2

6)

Separate semi circle from trapezoid

(pi(3)^2)/2 = 6.3

(6+10/2)(8) = 64

6.3 + 64 = 70.3 yd^2

8 0
2 years ago
Solve<br> 2(2x + 1) = 3(x - 4)
k0ka [10]

Step-by-step explanation:

2(2x + 1) = 3(x - 4)

4x+2=3x-12

4x-3x=--12-2

x=14

6 0
2 years ago
1. Which number is a perfect square?<br> A 4<br> B 6<br> C 8<br> D 10
Vladimir [108]

Answer:

4

Step-by-step explanation:

when you multiply a number by itself, therefore you have to multiple 2twice

5 0
3 years ago
Plane AXS intersects with which planes? More than 1 answer.
Nata [24]

Answer:

Options A and Option B

Step-by-step explanation:

All four sides AX, IX, IS and AS of the base are common in the four side walls of the prism.

In other words, edge AX is common in planes AXU and AXS,

Edge XI is common in planes XIB and AXS,

Edge SI is common in planes EBS and AXS,

Edge AS is common in planes CEA and AXS.

Therefore, plane AXS is intersecting planes AXU and EBS.

Options A and Option B are the correct options.

8 0
3 years ago
A backpack that normally sells for $40 is on sale for $30. Find the percent decrease​
pochemuha
It would be 40•.25=10 which means 40-10=30 so it’d be .25 and you’d move the decimal over 2 spots so it’d be 25% off
8 0
3 years ago
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