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3 years ago

If x = -6, which I equality is true

Mathematics

2 answers:

skelet666 [1.2K]3 years ago

8 0

Answer:

A is true

Step-by-step explanation:

A. -5 - 3 x -6 > 10

-3 x -6 = 18 - 5 = 13

13 > 10

it's A

B. -3 - 5 x -6 < -14

-5 x -6 = 30 - 3 = 27

27 < -14

it's not B

C. 1 - 2 x -6 > 13

-2 x -6 = 12

1 + 12 = 13

it's not C

D. 2 - -6 < -3

2 -(-6) = 8

8 < -3

it's not D

Colt1911 [192]3 years ago

7 0

Answer:

Step-by-step explanation:

the answer is A use substitution method to solve

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To rationalize the denominator of 2/square 13+ squared 11 , you should multiply the expression by which fraction?

eimsori [14]

Answer:

You should multiply the expression by $\frac{\sqrt{13}-\sqrt{11}}{\sqrt{13}-\sqrt{11}}$

Explanation:

To rationalize any expression, you must multiply it by its conjugate. A conjugate is defined as a similar expression to the original one but with an opposite sign

This means that:

The conjugate of a + b would be a - b

Now, the given expression is $\frac{2}{\sqrt{13}+\sqrt{11}}$

Consider the denominator:

From the above, we can conclude that the conjugate of $\sqrt{13}+\sqrt{11}$ is $\sqrt{13}-\sqrt{11}$

And, remember that we need to keep the value of the expression unchanged. This means that we must multiply both the numerator and the denominator by the same value

Therefore:

You should multiply the expression by $\frac{\sqrt{13}-\sqrt{11}}{\sqrt{13}-\sqrt{11}}$ in order to rationalize the denominator

Hope this helps :)

5 0

2 years ago

Read 2 more answers

What is the domain of f(x)=(1/2)^x

KIM [24]

Answer:

Domain: all real numbers

Step-by-step explanation:

The domain of a function is the set of values that x can be replaced with.