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777dan777 [17]
3 years ago
12

How do I create an equivalent expression that includes parentheses so that the value of the expression is 2 for 3+8-4x2-12

Mathematics
1 answer:
natka813 [3]3 years ago
5 0
(3+8-4)×2-12
3+8=11
11-4=7
7×2=14
14-12=2
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Answer:

The answer is y=24

Step-by-step explanation:

The <u>triangle is a 30-60-90 triangle</u>, which means that the it follows the <em>respective ratio of x:x</em>\sqrt{3}<em>:2x. </em>Since we know that the 30 degree value is 8\sqrt{3}, we can establish that the 60 degree value is 8\sqrt{3}*\sqrt{3} = 24.

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Determine whether these statements are true or false. a) ∅ ∈ {∅} b) ∅ ∈ {∅,{∅}} c) {∅} ∈ {∅} d) {∅} ∈ {{∅}} e) {∅} ⊂ {∅,{∅}} f )
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Answer:

a) ∅ ∈ {∅} TRUE

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c) {∅} ∈ {∅}  FALSE

d) {∅} ∈ {{∅}} TRUE

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f ) {{∅}} ⊂ {∅,{∅}} TRUE

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c) is false because "{∅}" is not included in the set

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