Evaluate the expression (1 + 2 i) - (1 - 4i) (1+2i) - (1-4i) and write the result in the form a + b i a+bi.

gymnastics incline mat is shaped like a wedge two sides of the matter shaped like right triangles how much vinyl is needed to cover both of triangular sides. 15in. and 33in.

Find the equation of the line (1, - 6) (2, - 12)

Show all work to write the equations of the lines, representing the following conditions, in the form y = mx + b, where m is the slope and b is the y-intercept: Part A: Passes through (-2, 1) and parallel to 4x - 3y - 7 =

At the city museum, child admission is $6.40 and adult admission is $9.70 . On Wednesday, twice as many adult tickets as child tickets were sold, for a total sales of $980.40 . How many child tickets were sold that day?

If the hat cost $15.48 and the sales tax was 5% how much did Rose pay for the hat

The product of a number and 4 is 69. What is the number?

A contractor has at most $42 to spend on nails for a project. Finishing nails cost $0.45 per pound and common nails cost $0.60 per pound. He would like to purchase at least 30 pounds of nails total. a. Write a system of linear inequalities: b.

Given the function g (x) = 6 (4) x, Section A is from x = 0 to x = 1 and Section B is from x = 2 to x = 3. Part A: Find the average rate of change of each section.

What is 10 more than 12,399?

Logs are stacked in a pile on the bottom row and 15 on the top row. there are 10 rows in all with each row having one more log that the one above it. how many logs are in the stack?