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3 years ago

Is the square root of 1/9 rational or irrational

Mathematics

2 answers:

Naya [18.7K]3 years ago

8 0

Answer:

Rational

Step-by-step explanation:

A rational number can be expressed in the form

$\frac{a}{b}$ , where a and b are integers

$\sqrt{\frac{1}{9} }$ = ± $\frac{1}{3}$ ← rational numbers

lyudmila [28]3 years ago

5 0

The square root of 1/9 is 1/3 and it is a Rational Number.

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At the banquet 450 people had chicken and 150 had pasta. What percent of people has pasta?

Liono4ka [1.6K]

25 percent of people had pasta.

First add 450 and 150 (which equals 600)

Next divide 600 by 150 (which equals 4)

Which means 150 is a fourth of six hundred, and a fourth is 25 percent.

Which leads to my answer of 25 percent

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3 years ago

Which of the following equations describes the line shown below? Check all

larisa [96]

Answer: A&D

Step-by-step explanation:

because the first point is (x is 1,y is 13) and it fits with what your given then you move on to the next problem is (x is -2, y is 4) and it fits with what your given.

All your doing is finding the same point

p.s. sorry if i wrong

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3 years ago

8x-10+75=15x-5 find the measure of the angle indicate

Lorico [155]

Step-by-step explanation:

15x -8x = 70

7x =70

x=10

answer is 10

4 0

4 years ago

The following table contains the probability distribution for the number of traffic accidents daily in a small city:

8_murik_8 [283]

Answer:

a) 2 accidents per day

b) .7071 accidents

Step-by-step explanation:

a) The mean is the sum of each possible number of accidents multiplied by its respective probability. So,

E(x) = (0)(.1) + (1)(.2) + (2)(.45) + (3)(.15) + (4)(.05) + (5)(.05) = 2

b) The variance V(x) = E(x^2) - E(x)^2, and the standard deviation is the square root of the variance. So,

V(x) = E(x^2) - (2)^2

= (0)(.1) + (1)(.2) + (4)(.45) + (9)(105) + (16)(.05) + (25)(.05) - 4 = 0.5

sqrt(0.5) = .7071

8 0

3 years ago

Please help thank you very much and show all work

Furkat [3]

Question 1:

Angle D and angle E are congruent because they are alternate interior angles. Let's make an equation.

$5(x-2)=x+14$

Use the distributive property

$5x-10=x+14$

Add both sides by 10 and subtract both sides by x

$4x=24$
$x=6$

Plus this in and you get 20 for both of them (they're supposed to be congruent).

Your answer is the first choice.

Question 2:

Use the sine. The sine is the opposite leg divided by the hypotenuse. Divide the sine from 400 to get our answer.

$\dfrac {400}{sin(7)} \approx 3282$

Your answer is the third choice.

Question 3:

Use the tangent. The tangent is the opposite side divided by the adjacent. Divide 203 by the tangent of 22 degrees.

$\dfrac{203}{\tan(22)} \approx 502.4$

Your answer is the third choice. I hope this helps! :)

4 0

3 years ago