3+2−16⋅9=? can you help me

Mathematics

2 answers:

wel3 years ago

7 0

-99..?? I think that’s the answer

LiRa [457]3 years ago

4 0

Answer:

-139

Step-by-step explanation:

Use Order of Operation:

1. Parentheses

2. Exponents

3. Multiplication and Division

4. Addition and Subtraction

First is parentheses but there are none so we can skip that step

Second is exponents but there are none so we can skip that step

Third is multiplication and Division which there is -16 and 9.

Multiply -16 and 9:

-144

Now the equation looks like this:

3+2-144

Since we have no other than addition and subtraction I would just solve

3+2 is 5

5-144 is

-139

Hope this helps!

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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. Observe the attached image

3) The final distance (d) is:

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