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2 years ago

PLEASE HELP OMG I DONT GET THE LESSON Find the length of side x to the nearest tenth.

Mathematics

2 answers:

givi [52]2 years ago

7 0

x=1,

since we can use the pythagorean theorem we have x and 12

12+x= 12+x/3

1/3x+4=3

x=1

krek1111 [17]2 years ago

6 0

<h2>Hello There today we will solve your problem</h2>

Since side B is $\sqrt12$ we can solve that and we get

3.4641...

now we can find side c... it's a lot

$c=\frac{b}{sin(b)}$

which equals 4

and

$a=\sqrt c^2-b^2\\=\sqrt3.9999981349996^2-3.4641^2\\2$

$\huge\red{\mid{\underline{\overline{\textbf{ANSWER}}}\mid}}$

Side C ⇒ 4
Side A ⇒2

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Prove each statement that is true and ﬁnd a counterexample for each statement that is false. Assume all sets are subsets of a un

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Answer with Step-by-step explanation:

We are given that A, B and C are subsets of universal set U.

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3 years ago

Which irrational number can be added to pi to get a sum that is rational?

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4 years ago

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3 years ago

At Hogwarts School of Witchcraft and Wizardry, Professor Snape was concerned about grade inflation, and suggested that the schoo

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Answers:

The z scores are approximately:

Care of Magical Creatures: z = 0.333
Defense Against the Dark Arts: z = 0.583
Transfiguration: z = -0.263
Potions: z = -0.533

From those scores, we can say:

Best grade = Defense Against the Dark Arts
Worst grade = Potions

=====================================================

Further Explanation:

We'll need to convert each given score to a corresponding standardized z score.

The formula to use is

z = (x - mu)/sigma

where,

x = given grade for each class
mu = mean
sigma = standard deviation

Let's find the z score for the Care of Magical Creatures class

z = (x - mu)/sigma

z = (3.80 - 3.75)/(0.15)

z = 0.333 approximately

Repeat this process for the Defense Against the Dark Arts score.

z = (x - mu)/sigma

z = (3.60 - 3.25)/(0.60)

z = 0.583 approximately

And for the Transfiguration class as well

z = (x - mu)/sigma

z = (3.10 - 3.20)/(0.38)

z = -0.263 approximately

The negative z score means his grade below the average, whereas earlier the other scores were above the average since he got positive z scores.

Now do the final class (Potions) to get this z score

z = (x - mu)/sigma

z = (2.50 - 2.90)/(0.75)

z = -0.533 approximately

This grade is below average as well.

----------------------------

To summarize, we have these z scores

Care of Magical Creatures: z = 0.333
Defense Against the Dark Arts: z = 0.583
Transfiguration: z = -0.263
Potions: z = -0.533

Harry did his best in Defense Against the Dark Arts because the z score of 0.583 (approximate) is the largest of the four z scores. On the other hand, his worst grade is in Potions because -0.533 is the lowest z score.

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2 years ago