3 years ago

Why do you switch the inequality sign when multiplying or dividing by a negative?

1 answer:

5 0

If we multiply or divide both sides of an inequality by a negative number, you have to flip the inequality. Hope this helps :)

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If the mean of a given data set is 56 and the standard deviation is 10

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5.6 divided by 10

=5.6

Step-by-step explanation:

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vova2212 [387]

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3 years ago

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Evaluate 3x for x = −2, x = 1, and x = 3. Question 18 options: A) 1∕3, 0, 9 B) 1∕9, 3, 27 C) 9, 3, 27 D) 1∕9, 9, 27

icang [17]

Answer: B) 1/9, 3, 27

Step-by-step explanation:

Here, we need to evaluate $3^x$ for $x = -2, x = 1, \text{ and } x = 3.$

So, we substitute values of x in the given function.

At x= -2, we have

$3^{-2}=\dfrac{1}{3^2}=\dfrac{1}{9}\ \ \ [\because\ a^{-n}=\dfrac{1}{a^n}]$

At x= 1, we have

$3^1=3$

At x= 3

$3^3=3\times3\times3=27$

So, the values of $3^x$ for

Thus, the correct answer is B) 1/9, 3, 27

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3 years ago