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Nonamiya [84]
2 years ago
5

Quick Math Problems Plz Help Solve For X (Show Ur Work If U Can)

Mathematics
1 answer:
VARVARA [1.3K]2 years ago
5 0

Answer:

5. 6x^2 - x - 2

6. 9x^2 - 15x + 6\frac{1}{4}

Step-by-step explanation:

5:

  • (x+ \frac{1}{2}) (6x-4)
  • (x)(6x) + (x)(-4) + (\frac{1}{2})(6x)+(\frac{1}{2})(-4)
  • 6x^2 - 4x + 3x - 2
  • 6x^2 - x - 2

6:

  • (3x-\frac{5}{2})^2
  • (3x - \frac{5}{2})(3x - \frac{5}{2})
  • (3x)(3x) + (3x)(\frac{-5}{2}) + (\frac{-5}{2})(3x) + (\frac{-5}{2})(\frac{-5}{2})
  • 9x^2 - \frac{15}{2}x - \frac{15}{2}x + \frac{25}{4}
  • 9x^2 - 15x + \frac{25}{4}
  • 9x^2 - 15x + 6\frac{1}{4}
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<img src="https://tex.z-dn.net/?f=%20%7B2%7D%5E%7Bm%7D%20%20%3D%20n%20" id="TexFormula1" title=" {2}^{m} = n " alt=" {2}^{m} =
sveta [45]

Answer:

\displaystyle n^3-\frac{1}{n^{2}}

Step-by-step explanation:

<u>Exponents Properties</u>

We need to recall the following properties of exponents:

(a^x)^y=(a^y)^x=a^{xy}

\displaystyle a^{-x}=\frac{1}{a^x}

We are given the expression:

2^m=n

We need to express the following expression in terms of n.

8^m-4^{-m}

It's necessary to modify the expression to use the given equivalence.

Recall 8=2^3 \text{ and }4 = 2^2. Thus:

(2^3)^m-(2^2)^{-m}

Applying the property:

(2^m)^3-(2^m)^{-2}

Substituting the given expression:

n^3-n^{-2}

Or, equivalently:

\mathbf{\displaystyle 8^m-4^{-m}= n^3-\frac{1}{n^{2}}}

5 0
2 years ago
Which inequality explains why these three segments cannot be used to construct a triangle?​
Anna11 [10]

Answer:

Iliana cannot construct a triangle because the sum of the two smaller sides will not be greater than the third side. Iliana cannot construct a triangle because the sum of the two smaller sides will be greater than the third side.

5 0
2 years ago
For what values of x is rational expression below undefined x-7/x^2-7x-8
Novay_Z [31]
The values are x = 8 and x = -1.

To find the undefined values, we need to know when the denominator is zero.
To do this, we need to factor it and find the value that would make either factor equal to zero.

If factors to: (x - 8)(x + 1)

Therefore, the undefined values would be at 8 and -1.
8 0
3 years ago
Luisa works at a gift shop. She receives a bonus if she sells at least 20 balloon bouquets in a month. Which graph represents th
suter [353]
Do you have an image of the graphs
5 0
3 years ago
Read 2 more answers
Please hurry I'm being timed!
rjkz [21]

Answer:

t=44

Step-by-step explanation:

19+25=44

5 0
3 years ago
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