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2 years ago

Trigonometry: find H

Mathematics

1 answer:

Ainat [17]2 years ago

6 0

h=opposite

7.01=adjacent

note:7.01 was gotten by 20-12.99

$from \: sohcahtoa \\tan \alpha = \frac{ |o| }{|a|} \\ tan46 = \frac{ |h| }{ |7.01| } \\ 0.2086 = \frac{ |h| }{ |7.01| } \\ h = 0.2086 \times 7.01 \\ h = 1.462m$

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The distribution of the number of occurrences of the letter t on the pages of a book is found to be a normal distribution with a

Leno4ka [110]

The distribution of the number of occurrences of the letter t on the pages of a book is found to be a normal distribution with a mean of 44 and a standard deviation of 18. If there are 500 pages in the book, which sentence most closely summarizes the data?

A. The letter t occurs less than 26 times on approximately 170 of these pages.

B. The letter t occurs less than 26 times on approximately 15 of these pages.

C. The letter t occurs more than 26 times on approximately 420 of these pages.

D. The letter t occurs more than 26 times on approximately 80 of these pages.

.Answer:
mean = 44 
sd = 18 
that means that "26" is 1 s.d. down, or at the 16th %ile 

so, there is a .16 chance that "t" will occur less than 26 times on any single page. 
consequently, there is a .84 chance that it will occur more than 26 times on any single page. 

Using that information, and knowing that 16% of 500 is 80, and 84% of 500 is 420, can you see where "C" is correct?

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3 years ago

Read 2 more answers

Using this formula l=A 1/2 what is the length of one side of a square with an area of 1,936 square kilometers? (A is the area of

Vera_Pavlovna [14]

c.)44 kilometers

Answer:

Solution given:

let

length =L

and

Area =A

Now

we have

Area [A]=1936 square kilometers

now

As we know that

Area of square :length *length

A=l*l

A=l²

Substituting value of A

1936=l²

doing square root on both side

$\sqrt{1936}=\sqrt{l²}$

we get

l= $\sqrt{2*2*2*2*11*11}$

l=2*2*11

l=44 kilometers

the length of one side of a square is 44 kilometers.

6 0

2 years ago

Find the rate, or percent, for each of the following items. Round your answers to the nearest 0.1%.

Sonja [21]

Answer:

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3 years ago

Write an equation for the line that contains the given point and that has the given slope m. (-8, -11) and slope undefined.

trapecia [35]

Answer:

x = -8 or x + 8 = 0

Step-by-step explanation:

As the slope is undefined, the line is parallel to y-axis

The equation of the line : x = -8

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2 years ago

ILL MARK AS BRAIN LEIST!

zheka24 [161]

Answer:

B. 1728 cm²

Step-by-step explanation:

You have to find the area of each side:

Top side: 32*20=640

Bottom side: 16*32=512

Triangle sides: 1/2*12*16=96*2=192

Back side: 12*32=384

add all these up and you get 1728

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2 years ago