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3 years ago

Is -2/5 irrational or rational and why???

Mathematics

1 answer:

Levart [38]3 years ago

4 0

Answer:

Rational

Step-by-step explanation:

A rational number is a number expressed as a fraction. So the number could be a decimal or percent.

Hope This Helps :)

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Vitek1552 [10]

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3 years ago

What is the slope of a line that goes through the points (2, 5) and (8, 6) ?

jenyasd209 [6]

Answer:

m = 1 / 6

Step-by-step explanation:

Use this formula y2 - y1 / x2 -x1 to find the slope.

6 - 5 / 8 -2 = 1/6

8 0

3 years ago

F(x)=X over x^3-2x^2+5x why will this have no zeros

Mumz [18]

If you evaluate directly this function at x=0, you'll see that you have a zero denominator.

Nevertheless, the only way for a fraction to equal zero is to have a zero numerator, i.e.

$\dfrac{x}{x^3-2x^2+5x}=0\iff x=0$

So, this function can't have zeroes, because the only point that would annihilate the numerator would annihilate the denominator as well.

Moreover, we have

$\displaystyle \lim_{x\to 0} \dfrac{x}{x^3-2x^2+5x} = \lim_{x\to 0} \dfrac{x}{x(x^2-2x+5)} = \lim_{x\to 0} \dfrac{1}{x^2-2x+5} = \dfrac{1}{5}$

So, we can't even extend with continuity this function in such a way that $f(0)=0$

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3 years ago

45 miles per hour<br><br> ? miles per minute

hjlf

if its 45 miles per hour then, 0.75 mile/minute.

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2 years ago

Read 2 more answers

Solve: −8x−7/ 3 =11

VladimirAG [237]

Answer: $x=-\frac{5}{3}$

Step-by-step explanation:

Given the equation $-8x-\frac{7}{3}=11$ , you need find the value of the variable x.

Then, you have to solve for x:

Add $\frac{7}{3}$ to both sides of the equation.

Divide by -8 to both sides of the equation.

Once you do this proccedure, you will get the value of the variable x.

Then:

$-8x-\frac{7}{3}+\frac{7}{3}=11+\frac{7}{3}$

$-8x=\frac{40}{3}\\\\\frac{-8x}{-8}=\frac{\frac{40}{3}}{-8}\\\\x=-\frac{5}{3}$

8 0

3 years ago