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Mathematics

1 answer:

Cloud [144]3 years ago

7 0

Answer:

17) vertical

18) vertical

19) vertical

20) adjacent

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PLZZ HELPP ASAP MATH QUESTION SIMPLIFY COMPLEX FRACTION

Ksivusya [100]

Answer:

$\large\boxed{\dfrac{x^3+6x}{80x+64}}$

Step-by-step explanation:

$\dfrac{\frac{1}{8}+\frac{x+4}{16}}{\frac{x+4}{x^2}+\frac{4}{x}}=\left(\dfrac{1\cdot2}{8\cdot2}+\dfrac{x+4}{16}\right):\left(\dfrac{x+4}{x^2}+\dfrac{4\cdot x}{x\cdot x}\right)\\\\=\left(\dfrac{2}{16}+\dfrac{x+4}{16}\right):\left(\dfrac{x+4}{x^2}+\dfrac{4x}{x^2}\right)=\dfrac{2+x+4}{16}:\dfrac{x+4+4x}{x^2}\\\\=\dfrac{x+6}{16}:\dfrac{5x+4}{x^2}=\dfrac{x+6}{16}\cdot\dfrac{x^2}{5x+4}=\dfrac{(x+6)(x^2)}{(16)(5x+4)}\\\\\text{use distributive property}\ a(b+c)=ab+ac$

$=\dfrac{(x)(x^2)+(6)(x)}{(16)(5x)+(16)(4)}=\dfrac{x^3+6x}{80x+64}$

6 0

3 years ago

Please help asap 25 pts

Ulleksa [173]

The answer is A.

First we substitute 8 into the given equation.

$s = 10 \sqrt{4(8)} +15$

Multiply 8 and 5, then find the square root of 40. Finally multiply it by 10.

$s = 10 \sqrt{40} +15$

$s = 63.245 +15$

Then add 15.

And the answer will be 78.245.

Now the question says that s is in thousands, so the real answer would be about 75,000.

4 0

3 years ago

Please help What is the value of this expression when a = 7 and b = -4? |2a| - b/ 3

belka [17]

Answer:

46/3

Step-by-step explanation:

|2a| - b/3

Plug in the values and evaluate.

|2(7)| - (-4)/3

|14| + 4/3

Apply | a | = a