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Helga [31]
3 years ago
15

3. Use distributive property to simplify

Mathematics
1 answer:
Snezhnost [94]3 years ago
6 0

Answer:

<h2>see the answers</h2>

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>
  • PEMDAS
<h3>tips and formulas:</h3>

orders of PEMDAS:

  1. parentheses
  2. exponent
  3. multiplication or
  4. division
  5. addition or
  6. substraction
  • left to right
<h3>let's solve:</h3>

a)

  1. remove first parentheses and add: -6×[-12+26] =-6×[14]
  2. remove third parentheses and multiply:-6×14=-84

c)

  1. remove first parentheses and add:(6)×[-17+28]=6×[11]
  2. remove third parentheses and multiply: 6×11=66

e)

  1. remove first parentheses and substract:7×[-12-(6)]=7×[-12+(-6)]=7×[-18]
  2. multiply:7×[-18]=-126
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Answer:

x = 31

Step-by-step explanation:

AC=BD

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Check:

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Dennis_Churaev [7]
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3 years ago
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Kenyin is taking a short multiple choice quiz with four questions on it. If each question has four choices and Kenyin guess at a
bekas [8.4K]

Kindly note that the question says 4; maybe the final question was intended to be the probability that he gets exactly 2 of the 4 correct. However. If it is the other way round. This a e procedure used in the solution should also be followed.

Answer:

0.21

Step-by-step explanation:

Number of options = 4

One correct answer per option ; hence, the probability of success, p = 1/4 = 0.25

Using the binomial probability relation :

P(x =x) = nCx * p^x * (1 - p)^(n - x)

x = 2 ; n = 4

p = 0.25 ; 1 - p = 0.75

P(x = 2) = 4C2 * 0.25^2 * 0.75^2

P(x = 2) = 6 * 0.0625 * 0.5625

P(x = 2) = 0.2109375

P(x = 2) = 0.21 (2 decimal places)

Note : if the question was 3, then put, n = 3 instead of 4

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Answer:

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Step-by-step explanation:

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