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Zigmanuir [339]
3 years ago
8

Find all solutions to the equation. cos x = - 1/2

Mathematics
1 answer:
madam [21]3 years ago
4 0

Answer:

x = 2\pi /3 + 2\pi n\\x= 4\pi /3 + 2\pi n

Step-by-step explanation:

Radian: x = 2\pi /3 + 2\pi n\\x= 4\pi /3 + 2\pi n

Degree:  x = 120 + 360n , x = 240 + 360n

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Answer pls and thank u !
deff fn [24]
It would be -3 heehehe
3 0
3 years ago
45% of the student body at a local high school work part-time. 80% of the students who do not part-time love math whereas only 6
Mama L [17]

Answer:

71%

Step-by-step explanation:

I think the easiest way to think of this is to pretend that there are a total of 100 students at the high school, so that means the amount of people who work part time is 45% of 100 = 45 people. If 60% of those students love math, you do 0.6 * 45 = 27 people.

Next, 80% of the students who do not have a part time job (100 - 45 = 55) love math, so 0.8 * 55 = 44 people.

44 + 27 = 71, so the percent is 71/100 = 71%.

let me know if any part of that doesn't make sense

3 0
3 years ago
Mr mogi barrowed $9,000 for 10 years to make home improvements if he paid a total of $11,000 in interest in interest at what I t
jonny [76]

Answer:

Step-by-step explanation:

5 0
3 years ago
Why is this number not in scientific<br> notation?<br> 36.5 x 10^6<br> please help
andrew11 [14]

Answer:

The first number should be a number between 1 and 10 (see explanation)

Step-by-step explanation:

For a number to be in scientific notation, a number between 1 and 10 has to be multiplied by a power of 10.

36.5 is not between 1 and 10, alternatively, you can rearrange it:

3.65 x 10^7      <----This would be the correct scientific notation

3 0
2 years ago
This is for my math review due tomorrow I need help!!
Snowcat [4.5K]
Z is greater than or equal to 7.

you would put a 7 near the front of the number line and put a colored in circle above it. then you would draw a line from the circle to the other end of the line
6 0
4 years ago
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