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3 years ago

12

A surveying instrument is 5 feet from the ground, 22 feet from the base of a building. The angle of elevation from the top of th

e building is 60 degrees. How tall is the building?

2 answers:

g100num [7]3 years ago

8 0

Answer:

$\frac{\left(22\cdot \sin \left(60\right)\right)}{\sin \left(30\right)} +5$

43.1 ft

Step-by-step explanation:

dimaraw [331]3 years ago

5 0

43.1 ft is the correct answer.

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3 years ago

Write a 1/4 as an equivalent fraction of 360 in the denominator

Karo-lina-s [1.5K]

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3 years ago

My little brother spent $5 on comic books and magazines. He bought 4 items. If comic books

Eva8 [605]

Answer: He bought 1 magazine and 3 comic books.

Step-by-step explanation: If comic books cost $1 and magazines cost $3, the equation for the problem should look like this: 2(m) + 1(c) = 5, since you know that the brother spent $5 in total. "m" represents the number of magazines purchased while "c" represents the number of comic books purchased. If you plug in 1 for "m" and 3 for "c", the equation would be true and would equal a total of $5. Also, 1 magazine and 3 comic books would mean that the little brother did, in fact, purchase 4 items.

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3 years ago

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Organisms are present in ballast water discharged from a ship according to a Poisson process with a concentration of 10 organism

mash [69]

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3 years ago

. What are the exact solutions of x2 - x - 4 = 0?

Dimas [21]

X ² - x - 4 = 0
$x_{1} = \frac{1+ \sqrt{1+16} }{2}= \frac{1+ \sqrt{17} }{2} = 2.56$
$x_{2} = \frac{1- \sqrt{17} }{2}= - 1.56$
Exact values are x 1 = 2.56 and x 2 = -1.56

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3 years ago

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