3 years ago

Which set of angle measures could be the interior angles of a triangle?

Mathematics

2 answers:

Elan Coil [88]3 years ago

8 0

A idk if that right but I slow so

gogolik [260]3 years ago

8 0

Triangle angles add to 180 degrees. Not A, that's 270. Not B, that's 360. Not C, that's 150.

Answer: D. 15°, 30°, 135°

I'll note A and B technically aren't even sets.

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The letters of the word COMBINE are placed at random in a row. In how many ways can an arrangement occur such that all vowels ar

Oksana_A [137]

I think its 210 because there are 7 letters and 3 vowels so the permutation would be 7 P 3.

7 0

3 years ago

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:

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