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katrin2010 [14]

3 years ago

13

Exercise on Properties/Laws of Sets Simplify each of the following identities to its simplest form, using the laws of sets; (i)

(An B) U (AU B')'
(ii) An (AUB)
(iii) (CUA N (BUA)

1 answer:

GenaCL600 [577]3 years ago

3 0

Bro wat like bro what like what what bro.

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Which of the following represents a valid first step to solving this system of equations using the substitution method?

Phoenix [80]

Answer:

2(2y - 1) - y = 7

Step-by-step explanation:

I guess the 2 equations are

2x - y = 7

x = 2y - 1

substitution message that you use one equation to express one variable by the other, and then you use that in the other equation to get one equation for one variable. then you solve for that, and use that result in the first equation to since for the second variable.

the equations are already defined that way, that the second equation directly defines x as an excision of y.

so, this needs to be used then in the first equation.

and that makes

2(2y - 1) - y = 7

the correct first step.

7 0

2 years ago

Which term of the arthemetic sequence (1, 3, 5, 7) is equal to 141

Dmitry_Shevchenko [17]

Answer:

71th term is 141

Step-by-step explanation:

$a_{1}=1\\\\common \ difference = d = second \ term - first \ term\\\\ = 3 - 1 = 2\\\\a_{n} = 141\\\\a + (n -1)*d = a_{n}$

1 + (n - 1)*2 = 141 {Use distributive property}

1 + 2n - 2 = 141

2n - 1 = 141

2n = 141 + 1

2n = 142

n = 142/2

n = 71

6 0

3 years ago

Read 2 more answers

Three machines A, B, and C produce 55%, 25% and 20% respectively. The percentages of defective output are 3.5%, 4.5% and 5.5%. I

pishuonlain [190]

We are given the following information concerning the three production machines;

$\begin{gathered} Of\text{ the total production;} \\ A=55\text{ \%}=0.55 \\ B=25\text{ \%}=0.25 \\ C=20\text{ \%}=0.20 \end{gathered}$

Also, we are given the percentage of defective output as follows;

$\begin{gathered} A=3.5\text{ \%}=0.035 \\ B=4.5\text{ \%}=0.045 \\ C=5.5\text{ \%}=0.055 \end{gathered}$

Therefore, if an item is selected randomly, the probability that the item is defective would be;

$\begin{gathered} P\lbrack defective\rbrack=(0.55\times0.035)+(0.25\times0.045)+(0.20\times0.055) \\ P\lbrack\text{defective\rbrack}=0.01925+0.01125+0.011 \\ P\lbrack\text{defective\rbrack}=0.0415 \end{gathered}$

ANSWER:

The probability that the item is defective would be 0.0415

6 0

1 year ago

PLEASE HELP !!! I WILL MARK U BRAINLY !

Ghella [55]

Answer:

30

Step-by-step explanation:

Hey There!

To find the area of a triangle we divide the product of the height and base by 2

6x10=60

60/2=30

the area of the triangle is 30 :)

5 0

3 years ago

Two numbers add up to 10 multiply together to give 22.75

Aleksandr-060686 [28]

6.5 and 3.5 add up to 10 and multiply to give 22.75.

7 0

3 years ago