Solve the following system of equations: 2x-y=53, x+2y=8

Consider the following matrices: A=2413 and B=-1230. Find the sum of matrices A and B (i.e., A+B).

If the center of a circle is (2,3) and the radius is 8, what is the equation of the circle in standard form?

Evaluate the following limit: limx→2(3x+5)

If the center of a circle is (2,-3) and the radius is 8, what is the equation of the circle in standard form?

Compute the limit: limx→1x3-1x2-1

Given the logical propositions: p:"It is raining." q:"I have an umbrella." What is the logical expression for "It is not raining and I have an umbrella"?

Find the equation of the circle passing through the points (-1,2), (3,4), and (5,-1).

Let A be a square matrix of size 3x3 with all elements equal to 2. Find the determinant of matrix A.

The circle C1 has the equation (x-3)2+(y+4)2=25, and another circle C2 has the equation (x+2)2+(y-1)2=25. What is the relationship between C1 and C2?