Which of the following is an equivalent form of the compound inequality −22 > −5x − 7 greater than or equal to −3?

2 answers:

6 0

"−5x − 7 < −22 and −5x − 7 greater than or equal to −3" is the one among the following choices given in the question that is an equivalent form of the compound inequality −22 > −5x − 7 greater than or equal to −3. The correct option among all the options that are given in the question is option "A" or the first option.

Zinaida [17]3 years ago

3 0

Answer:

Step-by-step explanation:

-22 > -5x -7 ≥ -3 is the same that

-22 > -5x -7 and -5x - 7 ≥ -3 and this is equivalent to

-5x -7 < -22 and -5x -7 ≥ -3.

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If f(x) = -7x + 5x2 + 10, what does f(-2) equal?

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Answer:

f(-2) = 44

Step-by-step explanation:

Hello there! Lets get started solving this function!

For a function, whenever we see f(x) = ... , the function is simply asking the value of the equation at x! So, if replace f(x) with f(-2), we simply substitute x with -2 in the equation! Lets get started!

$f(x) = -7x + 5x^{2} + 10\\f(-2) = -7(-2) + 5(-2)^{2} + 10\\f(-2) = 14 + 20 + 10\\f(-2) = 44\\$