1 year ago

1. the sum of five times a number and -2, added to seven times the number

Mathematics

1 answer:

emmasim [6.3K]1 year ago

7 0

1. (5x - 2) + 7x = 12x - 2

2. 6(x - 5) > 22
6x - 30 > 22
6x > 52
x > 52/6
x > 26/3

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sesenic [268]

Answer:

The correct option is D.

Step-by-step explanation:

The given expression is

$(4-\sqrt{7})(4+\sqrt{7})$

Difference of two squares property:

$a^2-b^2=(a+b)(a-b)$

Using the above property, the given expression can be written as

$(4)^2-(\sqrt{7})^2$

Applying square we get

$16-7$

$9$

Therefore the correct option is D.

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3 years ago

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igor_vitrenko [27]

Answer:

$(m−15)(m+2)$

Step-by-step explanation:

$m² - 13m - 30?$

Formula :

${x}^{2} +bx+c$

$(m−15)(m+2)$

<h3>Hope it is helpful...</h3>

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AlekseyPX

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Monica [59]

If (a, b) is on the graph of f(x), then the point (b, a) must be on the graph of the inverse function f^-1(x).

<h3>Therefore your answer is d. (-2, 8).</h3>

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3 years ago