(70 points) please answer this question and explain how you get the answer!!

Mathematics

2 answers:

musickatia [10]3 years ago

3 0

Answer: -0.10

Step-by-step explanation:

there is a pattern because 2014 0.45, 2015 0.20, 2016 0.35, 2016 0.10.

Radda [10]3 years ago

3 0

Answer: -0.10

Step-by-step explanation:

because of the down fall

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If 18 , x , y , -3 are in A.P then find x + y.

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Answer:

Step-by-step explanation:

If this is an arithmetic progression, then there is a common difference.

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18 - 7 = x

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A stereo system is being installed in a room with a rectangular floor measuring 19 feet by 12 feet and a 7-foot ceiling. The st

krek1111 [17]

Answer:

The shortest length of wire that can be used is 29.47 ft.

Step-by-step explanation:

To solve this problem we can follow the following steps:

1) We have the dimensions of the floor of the room. The shortest distance between its opposite corners is the diagonal. We calculate the diagonal using the Pythagorean theorem.

$L = \sqrt{12^2 + 19^2}\\\\L= 22.47\ ft$

2) Since the speaker is on the ceiling, and the amplifier is on the floor, then 7 more feet of wire is needed to reach the speaker. <em>Observe the attached image</em>

3) The final distance (d) is:

$d = 22.47\ ft + 7\ ft\\\\d = 29.47\ ft$