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Semenov [28]
3 years ago
7

QueSLUIT Consider the universal set U of all the integers from 2 to 20, including both 2 and 20. Let B be the set of multiples o

f 2, not counting 2 itself. Find Bº. Write your answer in standard set notation, for example {1,2,3,4,5). Do not use the notation B° = in the answer​
Mathematics
1 answer:
AfilCa [17]3 years ago
4 0

Step-by-step explanation:

{2,3,5,7,9,11,13,15,17,19}

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8.46 If 100 is decreased by a% and the result is decreased by b%, then what is the total percent decrease (in terms of a and b)?
Marysya12 [62]

Answer:

The total percent decrease is $a+b-\frac{a b}{100}$

Step-by-step explanation:

  • We are given with a word problem
  • We are asked to find the total percentage decrease
  • We can do this in two steps

         Step 1: Finding the two percentage decrease

         Step 2: Finding their difference

Step 1 of 2

Let the decrease by a% be 100-a

Then b% decrease is

$$\begin{aligned}\frac{b}{100} \times(100-a) &=\frac{100 b-a b}{100} \\\frac{100 b}{100}-\frac{a b}{100} &=b-\frac{a b}{100}\end{aligned}$$

Step 2 of 2

The percentage difference between the two percentages is,

$$\begin{aligned}&(100-a)-\left(b-\frac{a b}{100}\right)=100-a-b+\frac{a b}{100} \\&100-a-b+\frac{a b}{100}=100-\left(a+b-\frac{a b}{100}\right)\end{aligned}$$

Since 100 is the total percent $a+b-\frac{a b}{100}$ is the percentage decrease.

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2 years ago
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Mice21 [21]

Answer:

3(n+7)-6=2n+10+n

Step-by-step explanation:

5 0
3 years ago
Find -11/15 if (n) =5n +6
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F(-11/5)=5(-11/5)+6
f(-11/5) = -11+6
<span>f(-11/5) = -5
Hope this helps!</span>
6 0
4 years ago
Catherine and Joseph together bought a video game for $16.40. Joseph contributed $7.80.
Alexxandr [17]

Answer:

  • 16.40-7.80= 8.60
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Select the correct factor from the presentation and calculate how many calories used. (Round to the hundredths.) A person weighi
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Answer:

the answer is 107.25              

Step-by-step explanation:


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