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alisha [4.7K]
3 years ago
12

Help please...whats an explicit equation?

Mathematics
1 answer:
Vedmedyk [2.9K]3 years ago
4 0
We represent a sequence with a formula that lets us find any term in the sequence without knowing any other terms, we are representing the sequence explicitly.
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What is something you learned about in math this week need it for survey
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A teacher writes the name of each of her 25 students on a slip of paper and places the papers in a box. To call on a student, sh
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The median of the marks 10, 13, 3x-1, 3x+1, 18, 18 arranged in ascending order is
Lorico [155]

Answer:

a. Marks = 10, 13, 14, 16, 18, 18

b. mode = 18

c. Range = 8

Step-by-step explanation:

==>Given the following data set arranged in ascending order:

10, 13, 3x-1, 3x+1, 18, 18

Median = 15

==>Required:

a. Marks:

To get each marks, let's find the value of x since we know median to be 15.

10, 13, [3x-1, 3x+1], 18, 18

Our median in this even number of data set would be the average of the 2 middle values which would give us 15.

Thus, we have:

[(3x-1) + (3x+1)] ÷ 2 = 15

[3x-1 + 3x+1] ÷ 2 = 15

[3x+3x-1+1] ÷ 2 = 15

6x/2 = 15

Multiply 2 by both sides

6x = 30

Divide 6 by both sides

x = 5

Now let's plug in the value of x to get out marks:

10, 13, 3(5)-1, 3(5)+1, 18, 18

10, 13, 14, 16, 18, 18

b. Mode is the most appeared data value, which is 18

c. Range is the difference between the highest and lowest value = 18 - 10 = 8

5 0
2 years ago
Susan purchased n notebooks. They were 4 dollars each. Write an equation to represent the total cost c that Susan paid
Monica [59]
N4=c

n times 4, n being a number of notebooks, would equal c, or the overall cost.
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2 years ago
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