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11Alexandr11 [23.1K]
3 years ago
8

A 20 foot extension ladder is placed in a wall making an angle of elevation for 85 degrees with the ground. If a person at the t

op of the ladder leaned back, rotating the ladder away from the wall, how far to the nearest foot would the person fall before hitting the ground?
Mathematics
1 answer:
snow_tiger [21]3 years ago
8 0

Answer:

21.74 ft

Step-by-step explanation:

We use Cosine because we are dealing with the Adj and Hyp

Cos 85 = x/20

x = 20 Cos 85

x = 1.74 feet away from the base of the wall.

Since the ladder is 20 foot long, the total distance will be 1.74 + 20 = 21.74 ft

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A Family purchased tickets to the movies in spent a total of $40.75. The family purchase five tickets there was a $.90 processi
muminat

Answer:

$7.25

Step-by-step explanation:

Total amount spent on the ticket   = $40.75

Number of ticket purchased  = 5

Processing fee per ticket  = $0.90

Unknown:

Cost of each ticket = ?

Solution:

To solve this problem, we need to find the processing fee for the 5 tickets purchase;

      Processing fee = number ticket x processing fee per ticket

      Processing fee  = 5 x 0.9  = $4.5

Now, the real cost a ticket = $40.75  - $4.5  = $36.25

So, cost per ticket is;

        Cost  = \frac{36.25}{5}   = $7.25

7 0
3 years ago
When solving the system using the additional/elimination method, which variables will cancel?
iogann1982 [59]

Answer:

the x terms

Step-by-step explanation:

there is a +x and a -x.

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x will cancel out

6 0
3 years ago
3 erasers cost $4.41. Write a proportion that would solve for the cost of 4 erasers.
Bess [88]

Answer:

$5.88

Step-by-step explanation:

3 erasers ⇒ $4,41

4 erasers ⇒ $A

A = 4 erasers * $4.41 / 3 erasers

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7 0
2 years ago
Read 2 more answers
Which of the following could not be the side lengths of a right triangle?
omeli [17]

Answer:

pls show what is the following

Step-by-step explanation:

how to find it by yourself:

The Triangle Inequality Theorem states that the sum of any 2 sides of a triangle must be greater than the measure of the third side. ... In other words, as soon as you know that the sum of 2 sides is less than (or equal to) the measure of a third side, then you know that the sides do not make up a triangle.

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solniwko [45]

Answer:

D

Explanation:

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4 years ago
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