Answer:
y=-3x+4
Step-by-step explanation:
i 18
---- = ----
100 25
25i 1800
----- = -------
25 25
i = 72
72%
Answer:
Step-by-step explanation:
![\cos \bigg( \frac{7\pi}{12} \bigg) \\ \\ = \cos \bigg( \frac{7 \times 180 \degree}{12} \bigg)\\ \\ = \cos \bigg( {7 \times 15 \degree} \bigg)\\ \\ = \cos \bigg( {105 \degree} \bigg)\\ \\ = \cos \bigg( {60\degree + 45 \degree} \bigg) \\ \\ = \cos {60\degree .\cos 45 \degree} - \sin {60\degree .\sin 45 \degree} \\ \\ = \frac{1}{2} . \frac{1}{ \sqrt{2} } - \frac{ \sqrt{3} }{2} .\frac{1}{ \sqrt{2} } \\ \\ = \frac{1}{2 \sqrt{2} } - \frac{ \sqrt{3} }{2 \sqrt{2} } \\ \\ \huge \purple{ \boxed{ \cos \Bigg( \frac{7\pi}{12} \Bigg)= \frac{1 - \sqrt{3} }{2 \sqrt{2} } }}](https://tex.z-dn.net/?f=%20%5Ccos%20%20%5Cbigg%28%20%5Cfrac%7B7%5Cpi%7D%7B12%7D%20%20%5Cbigg%29%20%5C%5C%20%20%5C%5C%20%20%3D%20%20%5Ccos%20%20%5Cbigg%28%20%5Cfrac%7B7%20%5Ctimes%20180%20%5Cdegree%7D%7B12%7D%20%20%5Cbigg%29%5C%5C%20%20%5C%5C%20%20%3D%20%20%5Ccos%20%20%5Cbigg%28%20%7B7%20%5Ctimes%2015%20%5Cdegree%7D%20%5Cbigg%29%5C%5C%20%20%5C%5C%20%20%3D%20%20%5Ccos%20%20%5Cbigg%28%20%7B105%20%5Cdegree%7D%20%5Cbigg%29%5C%5C%20%20%5C%5C%20%20%20%3D%20%20%5Ccos%20%20%5Cbigg%28%20%7B60%5Cdegree%20%2B%2045%20%5Cdegree%7D%20%5Cbigg%29%20%5C%5C%20%20%5C%5C%20%20%3D%20%5Ccos%20%20%20%7B60%5Cdegree%20.%5Ccos%2045%20%5Cdegree%7D%20%20-%20%20%5Csin%20%20%20%7B60%5Cdegree%20.%5Csin%2045%20%5Cdegree%7D%20%5C%5C%20%20%5C%5C%20%20%3D%20%20%5Cfrac%7B1%7D%7B2%7D%20.%20%5Cfrac%7B1%7D%7B%20%5Csqrt%7B2%7D%20%7D%20%20%20-%20%20%20%5Cfrac%7B%20%5Csqrt%7B3%7D%20%7D%7B2%7D%20.%5Cfrac%7B1%7D%7B%20%5Csqrt%7B2%7D%20%7D%20%20%5C%5C%20%20%5C%5C%20%20%3D%20%20%5Cfrac%7B1%7D%7B2%20%5Csqrt%7B2%7D%20%7D%20%20-%20%20%5Cfrac%7B%20%5Csqrt%7B3%7D%20%7D%7B2%20%5Csqrt%7B2%7D%20%7D%20%20%5C%5C%20%20%5C%5C%20%20%20%5Chuge%20%5Cpurple%7B%20%5Cboxed%7B%20%5Ccos%20%20%5CBigg%28%20%5Cfrac%7B7%5Cpi%7D%7B12%7D%20%20%5CBigg%29%3D%20%20%5Cfrac%7B1%20-%20%20%5Csqrt%7B3%7D%20%7D%7B2%20%5Csqrt%7B2%7D%20%7D%20%7D%7D)
Answer:
Step-by-step explanation:
Assumptions
You have to make some assumptions here without a diagram, and those assumptions can be wrong.
- The endpoints of <C at the same endpoints as the arc.
- The central angle is also 4x
- The measure of C is 1/2 the measure of the central angle.
With these in mind we can go on
Equation
- 2*<C = the measurement of the arc.
- 2*(x + 5) = 4x Properties of Arcs central angles and interior angles with the vertex and two other points on the legs of angle hitting the circumference.
Solution
Remove the brackets
- 2x + 10 = 4x Subtract 2x from both sides
- 2x - 2x + 10 = 4x - 2x
- 10 = 2x Divide both sides by 2
- 10/2 = 2x/2
- 5 = x Answer
Step-by-step explanation:
what I don't even know what that is I don't see how y'all do that