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spin [16.1K]
3 years ago
9

Classify each number as rational or irrational

Mathematics
2 answers:
padilas [110]3 years ago
5 0
1. R
2. Ir
3. R
4. R
5. R
6. Ir
7. R
8. Ir
Keith_Richards [23]3 years ago
4 0
11/3....this is rational because it is a fraction
sqrt 48.....irrrational because it cant be made into a fraction
6.25....rational
0.01045....if this terminates(ends), it is rational
sqrt 16/81....rational because it equals 4/9
sqrt 3/16....irrational
0.42...rational
16pi....irrational
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<span>We have to use PEMDAS for this expression.

Parentheses
Exponents
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</span>(2x^2 - 5x + 4)                    Original Mathematical Expression

[2(7)^2 - 5(7) + 4]                 Plugging the value of x, 7 into expression.

There are parentheses, so that means we have to work in them.

There are exponents, so we have to do those first.

[2(49) - 5(7) +4]                    Exponents.

There is multiplication, that we can do, so we do that left to right.

[98 - 35 + 4]                         Multiplication.

There is no division.

There is addition and subtraction, so we do those left to right.

[63 + 4]                                Subtraction.

67                                        Addition.

Final Answer: 67

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