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pashok25 [27]
3 years ago
6

What is 2 times 5 minus 1

Mathematics
1 answer:
s344n2d4d5 [400]3 years ago
8 0

what is 2 times 5 minus 1?

9

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Evaluate C_n.xP^xQn-x For the given n=7, x=2, p=1/2
r-ruslan [8.4K]

Answer:

The value of given expression is \frac{21}{128}.

Step-by-step explanation:

Given information: n=7, x=2, p=1/2

q=1-p=1-\frac{1}{2}=\frac{1}{2}

The given expression is

C(n,x)p^xq^{n-x}

It can be written as

^nC_xp^xq^{n-x}

Substitute n=7, x=2, p=1/2 and q=1/2 in the above formula.

^7C_2(\frac{1}{2})^2(\frac{1}{2})^{7-2}

\frac{7!}{2!(7-2)!}(\frac{1}{2})^2(\frac{1}{2})^{5}

\frac{7!}{2!5!}(\frac{1}{2})^{2+5}

\frac{7\times 6\times 5!}{2\times 5!}(\frac{1}{2})^{2+5}

21(\frac{1}{2})^{7}

\frac{21}{128}

Therefore the value of given expression is \frac{21}{128}.

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3 years ago
What is this ????><<<<<<<<<<<<<<<
Nat2105 [25]

Answer:

(x, y)

(7, 0)

Bike Trail is at 7, 0... It is 7 spots to the right (on the x axis) and 0 spots up or down (on the y axis)

Step-by-step explanation:

bike trail is the correct answer :)

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Here a brainliest if you get it right
oksian1 [2.3K]

Answer:

D.(2, 2)

Step-by-step explanation:

  • Staring point = (2, -4)
  • Since he moved 6 units up, so, there will be change in only y-coordinate of the starting point and x-coordinate will remain unchanged.
  • End point of the segment = (2, - 4 + 6) = (2, 2)
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2 years ago
Please help me with this slope question!
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The correct answer is y=2/3x

To find the slope you use rise over run so you take one dot (2,-5) and go up 2 units so that it would get one the same line as the other dot (5,-3) and then go to the right 3 units to get you to the exact spot that the dot is
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3 years ago
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Last year , Henry opened an investment account with 5800. At the end of the year ,the amount in the account had increased by 29.
joja [24]

Answer:

  • Percent increase in dollar = $1,711
  • Total in account = $7,511

Step-by-step explanation:

The money in the account had increased by 29.5%.

This increase in dollars is:

= Amount in account * percentage increase

= 5,800 * 29.5%

= 5,800 * 0.295

= $1,711

The total in his account was therefore:

= Amount invested + increase

= 5,800 + 1,711

= $7,511

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2 years ago
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