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Anuta_ua [19.1K]
3 years ago
10

OMG HELP!!!!!!!!!!!!!!!!!!!!!!!!!! ME!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
jeka943 years ago
5 0
B because it’s the only one that works
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True or false? Postulates are statements that are accepted without question or justification
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<span>True, as a postulate is the assumption of existence.</span>
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Anita plans to give her husband 3 shirts for his birthday. She narrows the search to 3 shirts from a selection of 17 shirts at D
Lunna [17]

Using the combination formula, it is found that she can select the shirts in 775,200 ways.

The order in which the shirt are chosen is not important, hence, the <em>combination formula</em> is used to solve this question.

Combination formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by:

C_{n,x} = \frac{n!}{x!(n-x)!}

In this problem:

  • 3 shirts from a set of 17.
  • Then, 3 shirts from a set of 20.
  • They are independent, hence, to find the total, we multiply both combinations.

T = C_{17,3} \times C_{20,3} = \frac{17!}{3!14!} \times \frac{20!}{3!17!} = 680 \times 1140 = 775200

She can select the shirts in 775,200 ways.

To learn more about the combination formula, you can check brainly.com/question/25821700

5 0
2 years ago
Find the value of x, y, and z in the parallelogram below.
ANEK [815]

Answer:

X= 67

Y= 121

Z= 80

Step-by-step explanation:

To find Y:

(y-9) and 112 are congruent so

y-9=112

y=121

To find Z: (consecutive)

180=121+z+3

180=124+z (combine like terms)

subtract 124 to cancel and move to other side of equation

z= 80

To find X: (consecutive)

180=112+x+1

180=113+x (combine like terms)

subtract 113 to cancel out and move to their side of equation

x = 67

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2 years ago
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storchak [24]

Answer:

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Step-by-step explanation:

<u>We know that:</u>

  • 30 kilometers = 1 hour

<u>Solution:</u>

  • 30 kilometers = 1 hour
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  • => 15 x 21 kilometers = 21/2 hours
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Hence, in 21/2 hours, the cyclist rides 315 kilometers.

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The correct answer is the middle option
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3 years ago
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