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Vaselesa [24]
3 years ago
5

Let U = {1, 2, 3, 4, 5, 6, 7), A = {2, 4, 6, 7), and B = {1, 4, 7}. Find the set (A U B)'.​

Mathematics
1 answer:
den301095 [7]3 years ago
3 0

Step-by-step explanation:

(A U B) = {1,2, 4, 6, 7}

(A U B)'= U- (A U B) = { 3,5}<------- Answer

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The sales tax rate is 8.5%. What is the total cost, including tax, of an item priced at $40.50
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The answer for this is $43.9425
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in 2.5 hours, Mr. Castelli drives a distance of 125 miles. He wants to know his average driving speed in the meters per minute.
Ulleksa [173]

Answer:

1,350 meters per min

Step-by-step explanation:

Given that Mr. Castelli covers 125 miles in 2.5 hours, the average speed = \frac{distance}{time}.

In miles per hr, average speed = \frac{125}{2.5} = 50 miles/hr.

Converting 50 miles/hr to km per hr:

If 1 miles = 1.62 km (unit conversion)

50 miles = 50*1.62 = 81 km/hr

Converting 81 km/hr to meters per hr:

1 km = 1,000 m (unit conversion)

81 km = 81*1,000 = 81,000 m/hr

Converting 81,000 m/hr to meters per minutes:

60 mins = 1 hr

Therefore, average speed = \frac{81,000}{60} = 1,350 meters/min

Average driving speed of Mr Castelli in meters per minute = 1,350 meters per minute.

4 0
3 years ago
Janet wanted to understand whether grade level had any relationship to their opinion on extending the school day. She surveyed s
konstantin123 [22]
Grade       In Favor     Opposed     Undecided          Total
9                 4                   2                    8                   14
10               7                  11                   8                    26
11               14                 15                  9                    38
12               11                 5                    10                  26
Total           36                 33                   35                 104

Above is a partial sum chart that will help us in our quest.

P(Grade 9 | opposed)
The probability of Grade 9, given opposed, is the portion of opposed students that are in grade 9. 
Total number opposed: 33
Number opposed in Grade 9: 2
P(Grade 9 | opposed) = 2 / 33 = 0.06

P(opposed | Grade 9)
Total Number Grade 9: 14
Number opposed in Grade 9: 2
P(opposed | Grade 9) = 2 / 14 = 0.14
6 0
3 years ago
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Olenka [21]

Answer:

y=3x+2

Step-by-step explanation:

y=mx+b

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plug in

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scoundrel [369]

Answer:

<h2>No,they are not</h2>

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An algebraic expression must contain and unknown value to solve for.

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