3 years ago

Solve for x y=-1/2x=3

Mathematics

1 answer:

ANEK [815]3 years ago

5 0

Answer:

-6

Step-by-step explanation:

x=-6

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Answer:12

Step-by-step explanation:

And it will be 2 left over

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The volume of a stack of identical circular drink coasters, each 1 centimeter thick, can be found using the function v(r)=8(3.14

Vladimir79 [104]

The volume of a stack of identical circular drink coasters, each 1 centimeter thick, can be found using the function v(r)=8(3.14)(r)^2, where r is the radius of a coaster. What does the constant 8 in the function represent?

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Find the mean and the standard deviation for each set of values. Show your work. 15,17,19,20,14,23,12

vekshin1

1. Mean.

$\overline{x}=\dfrac{15+17+19+20+14+23+12}{7}=\dfrac{120}{7}\approx\boxed{17.14}$

2. <span>Standard deviation.

First we have to square each value and calculate the mean of that squares:

$\overline{x^2}=\dfrac{15^2+17^2+19^2+20^2+14^2+23^2+12^2}{7}=\boxed{\dfrac{2144}{7}}$

so the variance:

$s^2=\overline{x^2}-\overline{x}^2=\dfrac{2144}{7}-\left(\dfrac{120}{7}\right)^2\approx\boxed{12.41}$

and the standard deviation:

$s=\sqrt{s^2}=\sqrt{12.41}\approx\boxed{3.52}$
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3 years ago

Solve one third divided by six equals blank by rewriting it as the multiplication equation one third times one sixth equals blan

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18 One ninth one eightinth six eighteenths answerAnswer:

it this but do it back wods

Step-by-step explanation:

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3 years ago

PLEASE HELP ASAP I NEED IT QUICK

marishachu [46]

Answer:

C would be the answer!

Step-by-step explanation:

The line goes down so its a negative and if you count the dots it is -3/5 which double is - 6/10:)

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