Help me plz i have 3 question 30 points

Mathematics

1 answer:

Vlad1618 [11]4 years ago

3 0

Here're the answers!!! Good luck!!
1) a = -7 (The first picture -Left to right)
2) x = -39
3) a = -2.1 (The last picture left to right)

Hoping this helped you out!! If my answer best helped you, please mark Brainliest! ;)

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Three consecutive integers are n, n + 1, and n+ 2. Four time s the sun of the least and greatest integers is 12 less than three

Svetradugi [14.3K]

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12 less than three times the least integer ⇒ 3n - 12

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3 years ago

A ladder leans against the side of a house. The angle of elevation of the ladder is 71 degrees, and the top of the ladder is 13f

Oksana_A [137]

Answer:

4.47 feet

Step-by-step explanation:

Given that,

The angle of elevation of the ladder is 71 degrees.

The top of the ladder is 13ft above the ground.

We need to find the distance from the bottom of the ladder to the side of the house. Let the distance is x. We can find it using trigonometry as follows :

$\tan\theta=\dfrac{P}{B}\\\\\tan(71)=\dfrac{13}{x}\\\\x=\dfrac{13}{\tan(71)}\\\\x=4.47\ ft$