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Sophie [7]
3 years ago
10

11. Translate the sentence: “Twice x is 5” to an equation

Mathematics
2 answers:
Natalija [7]3 years ago
5 0
Twice x is 2x. It says twice x equals 5. 
 The answer would be 2x=5
  x would then be 5/2 which is 2.5
Olegator [25]3 years ago
4 0
Twice x = 2x so the entire statement is

2x = 5
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If set A contains seven distinct numbers and set B contains three distinct letters, how many elements are in (A U B)?​
Ira Lisetskai [31]
<h3>Answer:  10 elements</h3>

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Explanation:

Let's use an example to see why this is

A = {1,2,3,4,5,6,7}

B = {x,y,z}

A U B = {1,2,3,4,5,6,7, x,y,z}

We simply glue the two sets together to form one single big set. Because sets A and B have no overlap, this means we dont have to worry about tossing out duplicates (since there aren't any).

There are 7 items in set A, and 3 items in set B.

Therefore, we have 7+3 = <u>10 items in set A U B</u>

The symbol U refers to the set union operator.

If you wanted to make a Venn Diagram, then you'd have two circles overlapping. In circle A will be the numbers 1 through 7. These values are not in the overlapped region. For circle B, the letters x,y,z are inside but not in the overlapped region. The overlapped region remains empty.

The set A U B talks about the collection of everything mentioned. It's the set of stuff in set A or in set B or in both sets.

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If you want a formula to write down on a notecard or reference sheet, then it would be

n(A U B) = n(A)+n(B)

where A and B are mutually exclusive, aka disjoint. This means they have nothing in the overlapped region

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2 years ago
If y= (2x^2+x)^3 +(x-1) /(1-x). find dy dx​
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Answer:

Step-by-step explanation:

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dy/dx=3(2x²+x)(4x+1)-0

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Let's check

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Now

let f(x) be y

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\\ \sf\longmapsto y=\dfrac{1}{3}x+3=f(x)\checkmark

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The coordinate grid shows the graph of four equations:
Art [367]

Answer:

its A and C

Step-by-step explanation:

hope this helps and mark me brainliest

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