3 years ago

Which number is prime? A. 21 B. 23 C. 25 D. 27

Mathematics

2 answers:

Novay_Z [31]3 years ago

6 0

Answer:

Step-by-step explanation:

IceJOKER [234]3 years ago

5 0

B. 23

Hope this helps!!!!!!

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John is looking up at the top of the Empire State Building from 1 mi. away and measures the angle of elevation to be 11 degrees.

torisob [31]

Refer to the attached image.

Let the height of the Empire State Building = BC = 'x'

John is standing at distance from Empire State Building = AB = 1 mile

The angle of elevation = 11°

In triangle ABC,

Consider $\tan 11^{\circ}= \frac{Perpendicular}{Base}$

$\tan 11^{\circ}= \frac{BC}{AB}$

$\tan 11^{\circ}= \frac{x}{1}$

$0.194= \frac{x}{1}$

x = 0.194 mile

Since 1 mile =5280 feet

So, x = $0.194 \times 5280$

= 1024.32 feet.

So, the height of the Empire State Building is 1024.32 feet.

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3 years ago

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lilavasa [31]

1: -27/45. 2 : -1/2 hope this helps

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3 years ago

Find the value c that completes the square for x^2-8x+c

Blababa [14]

Answer: 16

Step-by-step explanation:

$x^2-8x+c$

Let's complete the square.

$c=(\frac{b}{2})^2$

$c=(\frac{-8}{2})^2$

$c=(-4)^2\\ c=16$

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3 years ago

PLS HELP ME 30 POINTS IN TOTAL

Soloha48 [4]

Answer:

Both of the equations are right because if you take s=4p, then reverse it, p=1/4 of s because 4 of p is equal to s so s/4 = p

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2 years ago

Of the total number of pages in a book, 62% have pictures and the rest have no pictures. There are 310 pages with pictures in th

nasty-shy [4]

Answer:

500 total pages. 190 pages with no pictures.

Step-by-step explanation:

310 is 0.62 of the total pages. 310 divided bye 0.62 is 500.

500 minus 310 is 190 pages with no pictures.

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3 years ago