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Sedaia [141]
2 years ago
5

Please help me I really need this

Mathematics
2 answers:
Alenkasestr [34]2 years ago
8 0

Answer:

56

Step-by-step explanation:

8C5 = 56

Serjik [45]2 years ago
7 0

Answer:

  8C5 = 56

Step-by-step explanation:

The formula for nCk is ...

  nCk = n!/(k!(n-k)!)

Then the value of 8C5 is ...

  8!/(5!(8-5)!) = 8·7·6/(3·2·1) = 8·7

  8C5 = 56

_____

<em>Additional comment</em>

The larger of the denominator factorials will cancel most of the factors of the numerator. The remaining denominator factors can be factored from the remaining numerator values to simplify the problem of doing the math by hand. Most graphing calculators and all spreadsheets can compute this function for you.

  \dfrac{8!}{5!\cdot3!}=\dfrac{8\cdot7\cdot6\cdot5\cdot4\cdot3\cdot2\cdot1}{(5\cdot4\cdot3\cdot2\cdot1)(3\cdot2\cdot1)}=\dfrac{8\cdot7\cdot6}{3\cdot2\cdot1}=\dfrac{8\cdot7\cdot6}{6}=8\cdot7

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A) A plane takes off at 50 feet below sea level and climbs 1,542 feet. At what altitude is the plant currently flying?
Marrrta [24]

Answer:

A) 1,492

B) 1,908

Step-by-step explanation:

A) The equation set up for this part is 1,542-50=1,492 We know that we're subtracting 50 from 1,542 because it say that the plane starts below sea level.

B) The equation set up for this part is 3,400-1,492=1,908 We know that we're subtracting the answer from part A from 3,400 because the plane will need to climb the difference in order to reach 3,400.

4 0
2 years ago
What is the sum of the first 10 positive integers?<br><br> A) 55<br> B) 50 <br> C) 100<br> D) 95
olga2289 [7]
The correct answer here is A) 55. This is because a positive integer is defined as any number greater than 0 and has no decimals/ fractions in it. Therefore, you would add 1+2+3+4+5+6+7+8+9+10, yielding 55 as your answer.
4 0
2 years ago
53, Margie usually drinks 12.25 liters of water in one week (7 days), 1 she continues to drink water at the same rate, what is t
Anna [14]

Using the information given in the question, the total number of liters Margie will drink in a 4 week period is 39

<u>Consider the given information:</u>

<u />

  • 12.25 liters per week
  • Continues this for 4 weeks

<u>Equation formed with said information:</u>

Liters per week  ×  The 4-week period

<u>Solving the equation</u>

12.25 × 4

= 49

Therefore, after the 4-week period Margie would of drank 49 liters

4 0
2 years ago
Please help me y’all!!!!
DerKrebs [107]

Step-by-step explanation:

a^2 + 2(b - 6) - 17. a = -7 b = 2

= (-7)^2 - 2(2 - 6) - 17

= 49 - 4 + 12 - 17

= 40

6 0
2 years ago
Can SOMEONE HELP ME with this PLEASE!!!!
makkiz [27]

Answer:

12.4

Step-by-step explanation:

The distance between (7,21) and (-5,18)

d =sqrt( (-5-7)^2 + (18-21)^2)

  = sqrt(( -12)^2 + (-3)^2)

  = sqrt(144+9)

  = sqrt(153)

  =12.36931688

To the nearest tenth

12.4

6 0
2 years ago
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