Solve simultaneously
2x +y=9
3x^2 + 2y^2 +x -y =45 ​

The isosceles triangle has two sides of equal length, a, that sre longer than the length of the base ,b. the equation 2a+b=15.7 can be used to find the sides length. if one of the longer sides is 6.3 centimeters what is the length of the base

Perform the required operations on the following functions given: f(x)= 3-x; g(x)= -2x find g[f(x)]

What are the domain and range of the function f(x)=2^x+1