Step-by-step explanation:
Let the first angle be x,
second angle= x-45.6°
Now,
x+(x-45.6)°=90°
x+x-45.6°=90°
2x-45.6°=90°
2x=90°+45.6°
2x=135.6
x=135.6/2
x=67.8
Hence,
First angle= x= 67.8°
Second angle= x-45.6°= 67.8°-45.6°= 22.2°
Ques20. 66
Ques21. 8x+20y
Ques22. 132
So firstly, you want to multiply x on each side of the equation: ![3x^2+4x=1](https://tex.z-dn.net/?f=%203x%5E2%2B4x%3D1%20)
Next, subtract 1 on each side: ![3x^2+4x-1=0](https://tex.z-dn.net/?f=%203x%5E2%2B4x-1%3D0%20)
Next, we will be using the quadratic formula, which is
, with a = x^2 coefficient, b = x coefficient, and c = constant. Our equation will look like this: ![x=\frac{-4+/-\sqrt{4^2-4*3*(-1)}}{2*3}](https://tex.z-dn.net/?f=%20x%3D%5Cfrac%7B-4%2B%2F-%5Csqrt%7B4%5E2-4%2A3%2A%28-1%29%7D%7D%7B2%2A3%7D%20)
Firstly, solve the exponents and multiplications: ![x=\frac{-4+/-\sqrt{16+12}}{6}](https://tex.z-dn.net/?f=%20x%3D%5Cfrac%7B-4%2B%2F-%5Csqrt%7B16%2B12%7D%7D%7B6%7D%20)
Next, do the addition, and your exact solutions are:
and ![x=\frac{-4-\sqrt{28}}{6}](https://tex.z-dn.net/?f=%20x%3D%5Cfrac%7B-4-%5Csqrt%7B28%7D%7D%7B6%7D%20)
To isolate the variable you would divide both sides of the equation by 3, resulting in the equation to answer c = 4/3 or c = 1.3
D, you just need to divided it, 48\40