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Volgvan
3 years ago
7

What is absolute value? can you solve problems using the absolute value?

Mathematics
2 answers:
timofeeve [1]3 years ago
4 0

Answer:

Absolute value is a numbers distance from zero. It keeps positive numbers and turns negative numbers positive.

Yes, you can solve problems using the absolute value. For example,

|4| - |1| = 4-1 = 3

vesna_86 [32]3 years ago
3 0
An absolute value is positive value of any value. So the abs value of -28 is 28. The abs value of 67 is 67. Makes sense?

If it were |27-3| for example, treat the inside of a abs as parenthesis, so you must complete PEMDAS inside of it to reduce the equation to |24|, unless you wanted it to become |27| - |3|.

For functions, this becomes slightly different and more difficult, especially when adding a variable such as x. Look below for a sample equation.

|2x-3|=1

This equation will actually have (and most others) 2 solutions for x. To find these, you’ll need to multiply the inside of the abs by -1 for one equation, and leave it as it is for the other!

2x-3=1 -(2x-3)=1

Now you have to solve BOTH equations to get your correct x-value answers.

For the first listed equation:

2x=4

x=2

For the second listed equation:

-2x+3=1

-2x=-2

x=-1

So you get the x-values -1 and 2 which both make the parent function true!
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Use the distributive property of multiplication to find 5×45.<br> Hint: 45=5+40.
alexgriva [62]

Answer:

Step-by-step explanation:

Distributive property: a(b +c) = (a*b) + (a*c)

45 = 40 + 5

5* 45 = 5* (40 + 5)

         = 5*40 + 5*5

         = 200 + 25

         = 225

8 0
2 years ago
Simplify the trigonometric expression.
Natasha_Volkova [10]
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(1+sin \alpha )(1-sin \alpha )=1-sin^2 \alpha

Now we can rewrite our expression using the common denominator:
\frac{1-sin \alpha }{1-sin^2 \alpha } + \frac{1+sin \alpha }{1-sin^2 \alpha} = \frac{2}{1-sin^2 \alpha}

Finally, we can use the trig identities: 1-sin^2 \alpha =cos^2 \alpha and sec \alpha = \frac{1}{cos \alpha } to simplify our trig expression:
\frac{2}{cos^2\alpha}=2sec^2 \alpha

We can conclude that the correct answer is the fourth one.
5 0
3 years ago
Read 2 more answers
Sweets cost 6p how much would 43 sweets cost?
SCORPION-xisa [38]
The answer is 258 pennies
7 0
3 years ago
What is the volume of a cone with a diameter of 30 feet and a height of 600 feet? Use 3.14 for tt
Tomtit [17]

Answer:

the volume is about 1884

Step-by-step explanation:

v of cone= 1/3(pi)r^2h

diameter to radius is 30=5.477225575051661

so 1/3(3.14)5.477225575051661^2(60)

=1/3(3.14)30(60)

=1/3(5652)

=1884

hope this helps

7 0
2 years ago
At the beginning of each year for 14 years, Sherry Kardell invested $400 that earns 10% annually. What is the future value of Sh
Naddik [55]
Hmm if I'm not mistaken, is just an "ordinary" annuity, thus 

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3 0
3 years ago
Read 2 more answers
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