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3 years ago

Find the price after tax for a $940 iPhone with a NJ sales tax of 6.625%.

Mathematics

2 answers:

shepuryov [24]3 years ago

7 0

Answer:

1002.275

Step-by-step explanation:

Naddika [18.5K]3 years ago

4 0

Answer:

1002.275

Step-by-step explanation:

6.625 of 940 is 62.275

62.275 + 940 = 1002.275

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If you multiply just the first however many digits of the result by itself, you will never end up with a perfect 2, because the square root is irrational.

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3 years ago

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3 years ago

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3 years ago

Which of the following is an example of the difference of two squares

True [87]

Complete Question: Which of the following is an example of the difference of two squares?

A x² − 9

B x³ − 9

C (x + 9)²

D (x − 9)²

Answer:

A. $x^2 - 9$ .

Step-by-step explanation:

An easy way to spot an expression that is a difference of two squares is to note that the first term and the second term in the expression are both perfect squares. Both terms usually have the negative sign between them.

Thus, difference of two squares takes the following form: $a^2 - b^2 = (a + b)(a - b)$ .

a² and b² are perfect squares. Expanding $(a + b)(a - b)$ will give us $a^2 - b^2$ .

Therefore, an example of the difference of two squares, from the given options, is $x^2 - 9$ .

$x^2 - 9$ can be factorised as $x^2 - 3^2 = (x + 3)(x - 3)$ .

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3 years ago