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3 years ago

PLEASE HELP ME 20 POINTS!! Which lines are perpendicular to 6x + 18y = 5? Select all that apply.

Mathematics

1 answer:

zloy xaker [14]3 years ago

5 0

Answer:

y=3x-10

y + 6 = 3(x − 15)

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0.6 of the Chang family expenses are for internet service what fraction of the family's expenses is for internet service put the

sattari [20]

0.6=6/10 so after simplifying you get 3/5, hope it helps !!

4 0

4 years ago

The weekly earnings of students in one age group are normally distributed with a standard deviation of 47 dollars. A researcher

ELEN [110]

Answer:

Option D) 340

Step-by-step explanation:

We are given the following in the question:

Alpha, α = 0.05

Population standard deviation, σ = $47

Margin of error = 5

95% Confidence Interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

$\text{Margin of error} = z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

$5 = 1.96(\dfrac{47}{\sqrt{n}} )\\\\\sqrt{n} = \dfrac{47\times 1.96}{5}\\\\n = 339.443776\\\Rightarrow n \approx 340$

Thus, the correct answer is

Option D) 340

7 0

3 years ago

How do I find the area for this?

Olegator [25]

Answer: when u doing area know you are multiplying hope i help

Step-by-step explanation:

3 0

3 years ago

A right triangle has a hypotenuse length of 12, and one side length of 9. find the missing side length. do the side lengths form

Rina8888 [55]

Use the Pythagorean theorem:

$a^2+b^2=c^2$

c - a hypotenuse

a, b - legs

We have: a = 9 and c = 12. Substitute:

$9^2+b^2=12^2$

$81+b^2=144$ <em>subtract 81 from both sides</em>

$b^2=63\to b=\sqrt{63}\\\\b=\sqrt{9\cdot7}\\\\b=\sqrt9\cdot\sqrt7\\\\ \boxed{b=3\sqrt{7}}$

A Pythagorean triple consists of three positive integers a, b and c, such that

$a^2+b^2=c^2$ .

$b=3\sqrt{7}$ is not positive integer.

<h3>The sides of the triangle do not form a pythagorean triple.</h3>

5 0

4 years ago

I NEED HELP ASAP IM ON A TEST ABOUT PROPORTIONAL RELATIONSHIP WILL GIVE POINTS AND BRAINLIST

JulijaS [17]

Answer:

12/1

Step-by-step explanation:

k = y/x, where y and x is how much is added to the respective variables each point.

8 0

2 years ago