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Pepsi [2]
3 years ago
7

Only do number 23 i'll mark brainliest

Mathematics
1 answer:
Neporo4naja [7]3 years ago
3 0

Answer: −0.125

Step-by-step explanation:

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Cos B =<br>tan B =<br>sin B =​
Oduvanchick [21]

The three main trig functions are sine (written as sin), cosine (written as cos), and tangent (written as tan).

Sine of an angle = the length of the side opposite (aka across) the angle / the length of the hypotenuse

Cosine of an angle = the length of the side adjacent (aka the side next to which isn't the hypotenuse) to the angle / the length of the hypotenuse

Tangent of an angle = the length of the side opposite of the angle / the length of the side adjacent to the angle.

The acronym to remember this is SOHCAHTOA

SOH | CAH | TOA

SOH means sin(x) = opposite/hypotenuse

CAH means cos(x) = adjacent/hypotenuse

TOA means tan(x)= opposite/adjacent

cosB = length of adjacent side/length of hypotenuse = 7/25

tanB = length of opposite/length of adjacent = 24/7

sinB = length of opposite/length of hypotenuse = 24/25

8 0
3 years ago
Data accumulated by the National Climatic Data Center shows that the average wind speed in miles per hour for St. Louis,Missouri
Marat540 [252]

Answer:

The  value is  \sigma  =  8.5    

Step-by-step explanation:

From the question we are told that

  The  population mean is  \mu  =  9.7

   The  proportion is  P(X >x) =  0.2245

   The value considered is  x =  11.6

Generally given that the speed measurement is normally distributed we have that

   P(X >  11.6) =  P(\frac{ X - \mu }{ \sigma } >  \frac{11.6 - 9.7}{ \sigma } )  = 0.2245

Generally

   \frac{X - \mu}{ \sigma }  = Z(The  \ z -score \ of \  X )

P(X >  11.6) =  P(Z>  \frac{11.6 - 9.7}{ \sigma } )  = 0.2245

Hence

     \frac{ 11.6 - 9.7}{ \sigma}  =  0.2245

  \sigma  =  8.5      

6 0
3 years ago
Is the answer to this question 4.5
Novay_Z [31]

Answer:

x = 30

Step-by-step explanation:

m<E = [m(arc)AD - m(arc)BC]/2

50 = (130 - x)/2

100 = 130 - x

-x = -30

x = 30

3 0
3 years ago
Which of the following is a constant?<br> a. x<br> b. (5x)2<br> c. (1/y)2<br> d. 7
Marizza181 [45]
D. 7

a constant is a term without any variables
6 0
3 years ago
What is the value of the variable
3241004551 [841]
The value of the variable would be 82, as the inside angles of a triangle add up to 180
5 0
4 years ago
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