Answer:
(19.20.21.22.23.24.25.26.27)
Answer:
your dog water my guy sheesh
Step-by-step explanation:
Answer:
All options are correct
Step-by-step explanation:
1. Note that
![\cos 2x=2\cos ^2x-1.](https://tex.z-dn.net/?f=%5Ccos%202x%3D2%5Ccos%20%5E2x-1.)
2. Substitute previous expression into the equation:
![2\cos ^2x-1+\cos^2x=1,\\ \\3\cos^2x=2,\\ \\\cos^2x=\dfrac{2}{3},\\ \\\cos x=\pm\sqrt{\dfrac{2}{3}}.](https://tex.z-dn.net/?f=2%5Ccos%20%5E2x-1%2B%5Ccos%5E2x%3D1%2C%5C%5C%20%5C%5C3%5Ccos%5E2x%3D2%2C%5C%5C%20%5C%5C%5Ccos%5E2x%3D%5Cdfrac%7B2%7D%7B3%7D%2C%5C%5C%20%5C%5C%5Ccos%20x%3D%5Cpm%5Csqrt%7B%5Cdfrac%7B2%7D%7B3%7D%7D.)
3. If 0° < x < 360°, then
;
![x=180^{\circ}-35^{\circ}=145^{\circ};](https://tex.z-dn.net/?f=x%3D180%5E%7B%5Ccirc%7D-35%5E%7B%5Ccirc%7D%3D145%5E%7B%5Ccirc%7D%3B)
![x=180^{\circ}+35^{\circ}=215^{\circ};](https://tex.z-dn.net/?f=x%3D180%5E%7B%5Ccirc%7D%2B35%5E%7B%5Ccirc%7D%3D215%5E%7B%5Ccirc%7D%3B)
![x=360^{\circ}-35^{\circ}=325^{\circ}.](https://tex.z-dn.net/?f=x%3D360%5E%7B%5Ccirc%7D-35%5E%7B%5Ccirc%7D%3D325%5E%7B%5Ccirc%7D.)
All options are true.
Or you can solve this equation graphically. Plot the graph of the function
that represents the left side of the equation and the graph of the function
that represents the right side of the equation. their common points are solutions.
Answer:
25 and 15
Step-by-step explanation:
Since we were given two parts to be in ratio 5:3
the first number is then 5x , and second number 3x
Note that the second number is more than the first so it becomes
3x + 10
5x = 3x +10, 5x - 3x = 10
2x = 10, x = 5
from the question, we find the two parts ;
the first number would be 5x
5 x 5 = 25
and second number, 3x = 3x 5 = 15
so the two numbers are 25 and 15.. 25 + 15 = 40
Perimeter of triangle is sum of all the 3 sides.
So,
perimeter
= 3x-4 + x^2-1 +2x^2 -15
combining like terms,
= 3x^2 + 3x -20
given that x = 4,
= 3(4^2) +3(4) -20
= 3(16) +12-20
= 48 -8
= 40
hence the perimeter is 40 feet.