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3 years ago

Find the value. X3-4 when x=3 PLEASE HELP!!! ASAP!!!

Mathematics

2 answers:

DENIUS [597]3 years ago

7 0

Answer:

Step-by-step explanation:

Raise 3 to the power of 3

27 - 4

Subtract 4 from 27

Hope this was correct

andrew11 [14]3 years ago

4 0

Answer:

23

Explanation:

step 1 - rewrite the expression with the value of x

$x^3 - 4$

$(3)^3 - 4$

step 2 - solve the exponent

$(3)^3 - 4$

$27 - 4$

step 3 - subtract

$27 - 4$

$23$

therefore, the value of the expression is 23.

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3 years ago

Evaluate the function f(x) = –2x2 – 3x + 5 for the input value –3.

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Step-by-step explanation:

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3 years ago

Write the following number as ratios of integers

Grace [21]

We're going to "cut" the repeating part here in a few steps. First, we're going to put the number in a variable:

$x=-2.0\overline{42}$

Next, to get rid of the negative, we can multiply either side by -1 to get

$-x=2.0\overline{42}$

Now, we won't actually use this -x directly; instead, we want to create two new values, one by multiplying either side by 10:

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and the other by multiplying either side by 1000:

$-1000x=2042.\overline{42}$

Next, we can get rid of the repeated part of the number by subtracting -10x from -1000x:

$-1000x-(-10x)=2042.\overline{42}-20.\overline{42}\\ -1000x+10x=2022\\ -990x=2022$

And finally, we can divide either side of the equation by -990 to find that

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