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Galina-37 [17]
3 years ago
9

Cos(x)^3-cos(2*x)+cos(x) = 0

Mathematics
1 answer:
Viktor [21]3 years ago
6 0

Step-by-step explanation:

  1. fhfhcbfhffy and technology and technology and technology and technology and technology is a little bit and technology and technology
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Need answer ASAP ASAP please ASAP ASAP thank you:)
Paha777 [63]

Answer:

42°

Step-by-step explanation:

3x + 54° = 180° [Supplementary angles]

=> 3x = 180 - 54

=> 3x = 126

=  > x =  \frac{126}{3}

=> <u>x = 42</u><u>°</u><u> </u><u>(Ans)</u>

5 0
2 years ago
Read 2 more answers
If two marbles are randomly selected from the bag without replacement, what is the probability that the first marble is blue?
joja [24]

Answer:1,0.5, or 0 it depends

Explanation:

The probability that one event occurred depends on the total of random event, being 1 the most of the probabilities

If the two marbles are blue the probability to select a marble blue is 1

If one of the marbles is blue and the other marble is of any color the probability to select the blue marbles is:

P=1 - 1/2=1/2

Being 1/2 or 0.5 the answer

If any of the marbles are blue then the probabilities are 0

8 0
3 years ago
The midnight express train take 9 hours to travel 1818 kilometers with no stop at that rate how many kilometers will the travel
bija089 [108]

Answer:

808 kilometers

The drawings will help

3 0
3 years ago
Read 2 more answers
Factor completely 6x^2-7x-3
hichkok12 [17]
x =   \frac{-(-7) +/-  \sqrt{(-7)^{2}-4(6)(-3) }  }{2(6)}
\frac{7 +/- 11}{12}
x = 3/2 or -1/3


6 0
2 years ago
Anyone I need help with this problem plss
Nady [450]

Answer:

About 1.23 standard deviation above the mean

Step-by-step explanation:

From what we have here, we need to calculate the difference between the given value and the mean and divide by the standard deviation

That would be through calculating the z score as follows;

z-score = (x - mean)/SD

where x is the given value

z-score = (87-71)/13 = 1.23

Since the score is bigger than the mean, the correct choice here is that the score is about 1.23 standard deviation above the mean

3 0
2 years ago
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