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Ivan
3 years ago
7

Prove: For all sets AB,and CIA-B) U (A n B) = A

Mathematics
1 answer:
joja [24]3 years ago
8 0

Answer:

Step-by-step explanation:

(A-B)U (A∩B)  [   We know that difference of A and B is A∩B')

A∩B')U(A∩B)    

A∩(B'UB)      (Using Distributive law)

A∩(U)            [ Union of a set and its complement is always a universal set]

A                        Hence proved

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The number of students at Marita’s school decreased to 98% of last year’s number. Currently, there are 1,170 students. How many
77julia77 [94]

Answer:

  1194 students last year

Step-by-step explanation:

The problem statement tells us ...

  98% × (students last year) = 1170

Dividing by 98%, we get ...

  1170/0.98 = (students last year) = 1193.88 ≈ 1194

___

<em>Check</em>

1170/1194 = 0.979899... ≈ 0.98 = 98%

8 0
3 years ago
What is 4x+3=12<br> and join this padlet in the comments
aliina [53]

Answer:

x=9/4

Step-by-step explanation:

3 0
3 years ago
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MatroZZZ [7]

Answer:

100º

Step-by-step explanation:

It is across from the angle labeled 100º, therefore, it is also 100º.

Hope this helps! Have a great day!

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3 years ago
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Question 1 help pls ​
Evgesh-ka [11]

Answer:

y = - \frac{1}{2} x + 2

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (0, 2) and (x₂, y₂ ) = (4, 0) ← 2 points on the line

m = \frac{0-2}{4-0} = \frac{-2}{4} = - \frac{1}{2}

note the line crosses the y- axis at (0, 2) ⇒ c = 2

y = - \frac{1}{2} x + 2 ← equation of line

4 0
3 years ago
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VARVARA [1.3K]

Step-by-step explanation:

3 3/5 - 1 1/10

3 6/10 - 1 1/10

2 2/10= 2 1/5 is the answer

5 0
3 years ago
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