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Alona [7]
3 years ago
7

A spring has a natural length of 20 cm. If a 30-N force is required to keep it stretched to a length of 38 cm, how much work W i

s required to stretch it from 20 cm to 29 cm? (Round your answer to two decimal places.)
Mathematics
1 answer:
sergeinik [125]3 years ago
5 0
Replace your arnswer to 64
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What is the next term in the pattern? 0.2, 0.22, 0.222, . . .
quester [9]
It would be 0.2222 so it's your answer
5 0
3 years ago
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Find an expression for the nth term of the arithmetic sequence.<br><br> 2, 8, 14, 20, 26, . . .
IceJOKER [234]

Answer:

44

Step-by-step explanation:

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8 0
3 years ago
The probability of tossing heads with a standard coin is 1/2, because it is one of two possible outcomes. The probability of tos
spayn [35]

Answer:

  a) 1/64

  b) 1/4096

Step-by-step explanation:

As you can tell from the example, the exponent of 1/2 is the number of heads in a row.

a) p(6 heads in a row) = (1/2)^6 = 1/(2^6) = 1/64

b) p(12 heads in a row) = (1/2)^12 = 1/(2^12) = 1/4096

_____

<em>Additional comment</em>

The probability of a head is 1/2 because we generally are concerned with a "fair coin." That is defined as a coin in which each of the 2 possible outcomes has the same probability, 1/2. Similarly, a "fair number cube" has 6 faces, and the probability of each is defined to be the same as any other, 1/6. Loaded dice and unfair coins do sometimes show up in probability problems.

3 0
2 years ago
A line passes through the points (2,-2) and (-6,2). The point (a.-4) is also on the line. What is the value of a?
Zigmanuir [339]

Answer:

<u><em>6</em></u>

Step-by-step explanation:

Hey there) The formula of your line is:

-2=2k+b\\2=-6k+b\\=>4=-8k\\k=-0.5\\=> b=-2+1=-1\\=>y=-\dfrac{1}{2}x-1\\

If point has y=-4, then:

-4=-\dfrac{1}{2}a-1\\4=\dfrac{1}{2}a+1\\a=6

Hope this helps) Have a nice day/night :)

8 0
4 years ago
Which set is closed under the operation multiplication?
vlada-n [284]
D is under multiplication
6 0
3 years ago
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