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3 years ago

Need help with pre-cal please

Mathematics

1 answer:

schepotkina [342]3 years ago

3 0

Answer:

x = n² ± n√(n² + 8)

Step-by-step explanation:

x ≠ 0, n ≠ 0

4/x² + 1/x = 1/(2n²)
(x + 4)/x² = 1/(2n²)
2n²(x + 4) = x²
x² - 2n²x - 8n² = 0
D = (-2n²)² - 4(-8n²) = 4n⁴ + 32n² = 4n²(n² + 8)
x = (2n² ± 2n√(n² + 8))/2
x = n² ± n√(n² + 8)

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Really need this, click on photo if neccessary

Nikitich [7]

The answer would be D because honey sinks because it’s the densest item

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3 years ago

PLZ HURRY

Sergio039 [100]

Answer:

3.54>0.354

Step-by-step explanation:

2.80 is greater than 2.68 not less.

0.257 is greater than 0.1574 not less.

9.04 is less than 9.4 not greater.

The only correct answer is 3.54>0.354 because the 3 in 3.54 is greater than the 0 in 0.354.

5 0

3 years ago

What is the answer please.... need help

mina [271]

Answer:

$f\left(x\right)=x^3-6x^2+3x+10$ is the function of the least degree has the real coefficients and the leading coefficients of 1 and with the zeros -1, 5, and 2.

Step-by-step explanation:

Given the function

$f\left(x\right)=x^3-6x^2+3x+10$

As the highest power of the x-variable is 3 with the leading coefficients of 1.

So, it is clear that the polynomial function of the least degree has the real coefficients and the leading coefficients of 1.

solving to get the zeros

$f\left(x\right)=x^3-6x^2+3x+10$

$0=x^3-6x^2+3x+10$ ∵ $f(x)=0$

$Factor\:x^3-6x^2+3x+10\::\:\left(x+1\right)\left(x-2\right)\left(x-5\right)=0$

$\left(x+1\right)\left(x-2\right)\left(x-5\right)=0$

Using the zero factor principle

if $ab=0\:\mathrm{then}\:a=0\:\mathrm{or}\:b=0\:\left(\mathrm{or\:both}\:a=0\:\mathrm{and}\:b=0\right)$

$x+1=0\quad \mathrm{or}\quad \:x-2=0\quad \mathrm{or}\quad \:x-5=0$

$x=-1,\:x=2,\:x=5$

Therefore, the zeros of the function are:

$x=-1,\:x=2,\:x=5$

$f\left(x\right)=x^3-6x^2+3x+10$ is the function of the least degree has the real coefficients and the leading coefficients of 1 and with the zeros -1, 5, and 2.

Therefore, the last option is true.

8 0

3 years ago

Put this fractions from shortest to longest 1/2,0.4,2/3,1.04?

Anastasy [175]

0.4,1.04,1\2,2\3 that is the way to to shortest to the longest

5 0

3 years ago

60% of the students at a school walk to school. Work out the percentage of the students who do not walk

Shkiper50 [21]

Answer:

40%

Step-by-step explanation:

everything is 100% so you have to

100-60=40

40% of people do not walk to school

3 0

2 years ago