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malfutka [58]
3 years ago
6

How do you solve an absolute value equation?

Mathematics
1 answer:
Mkey [24]3 years ago
6 0

The distance between two real numbers x,y is the absolute value of their difference, |x-y|. So the statement "all x that are 1/4 away from -6" is captured in the equation

|x-(-6)|=\dfrac14

or

|x+6|=\dfrac14

To solve, you can use the definition of absolute value: if x is not negative, then |x|=x; otherwise, |x|=-x.

So there are two cases to consider:

1. Suppose x+6\ge0. Then |x+6|=x+6, and the equation reduces to

x+6=\dfrac14\implies x=-\dfrac{23}4

2. Suppose x+6. Then |x+6|=-(x+6)=-x-6 and

-x-6=\dfrac14\implies x=-\dfrac{25}4

-6=-\dfrac{24}4, so the two solutions we found are correct because both -\dfrac{23}4 and -\dfrac{25}4 are indeed 1/4 away from -6.

- - -

For the question regarding inequality, you know that the absolute value must return a non-negative number. In other words, there is no x such that |x|.

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In the problem, how do you get 6,300,000 using the digits 1-7 to create a seven-digit number that can be rounded to 6,300,000. We can use the numbers according to the rule of rounding values, 0-4 and 5-9. Hence the numbers are:
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6 0
3 years ago
WILL GIVE BRAINLIEST !! I NEED HELP ASAP
Ivan

Answer:

Below in bold.

Step-by-step explanation:

1) as ABCD is a rhombuc AC bisects < BAD and < BCD .

Therefore < CAD = 1/2 * 104 = 52 degrees.

2) < ACG  = < ADC +  < CAD  ( External angle of triangle theorem)

Therfore  < ACG = 76 + 52 = 128 degrees.

4 0
2 years ago
Rearrange e = 2f to make fthe subject.<br> =
GrogVix [38]

Answer:

f = e/2

Step-by-step explanation:

e = 2f

Switch sides.

2f = e

Divide both sides by 2.

f = e/2

6 0
3 years ago
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How do you convert 5/8 into a decimal?
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0.625 would be 5/8 as a decimal
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Help asap please and thanks
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He can only go as low as $500


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