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m_a_m_a [10]
3 years ago
13

If you toss three coins, what are the odds in favor of getting exactly two tails and one head?

Mathematics
1 answer:
Leni [432]3 years ago
3 0
\displaystyle
|\Omega|=2^3=8\\
|A|=3\\\\
P(A)=\dfrac{3}{8}\Rightarrow \text{A}
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if two similar rectangles have a scale factor of 5:2 and the area of the smaller rectangle is 45 cm^2, what will be the area of
Semenov [28]

Answer:

281.25 cm^2

Step-by-step explanation:

Given that,

The scale factor of Two similar triangles = 5:2

Area of the smaller rectangle = 45 cm^2

To find,

The Area of the larger rectangle = ?

Procedure:

As we know, similar triangles have similar ratios of sides. Thus, this can be written in proportion with the sides' ratio to the left while ratio of areas on the right.

(5)^2/(2)^2 = a/45

∵ The area of the larger rectangle = 25/4 * 45

= 281.25 cm^2

8 0
3 years ago
A circle has diameter 18 inches, and a chord is 14 inches long. What is the distance in inches from the chord to the center of t
Mazyrski [523]

Answer:

Let O be the center of a circle whose radius is r cm , in which AB= 14 cm long

cord is at a distanceof 24 cm from O. Draw a perpendicular OD on AB , thus ,

OD= 24 cm.

In right angled triangle. ODB

OB^2 = OD^2+ DB^2

r^2 =(24)^2+(AB/2)^2 = 576+(14/2)^2

r^2 = 576+ 49=625

r = √625. =25 cm. Answer.

7 0
2 years ago
in how many ways can a supermarket chain select 3 out of 12 possible sites for construction of a new supermarket?
denis-greek [22]

Answer:

its 220

Step-by-step explanation:

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A common flea can jump a distance of 33 cm. Suppose a flea makes five jumps of this length in the northwest direction. If the fl
7nadin3 [17]
Solution: 33*5= 165   W= sqrt (165^2 - 88^2)                                                                                                                           Solve: 165^2 = 27225    88^2 = 7744                                                                                                                                 Now, Square root 27225/√ 19481 = <span>139.574353 (139.57)                                                 So, the fleas westward displacement is 139.57 cm</span>                                                                 
5 0
3 years ago
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Which expression is equivalent to 8k - 4
Sliva [168]

Answer:

4(2k-1)

Step-by-step explanation:

5 0
3 years ago
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