7n - 4 = 31

n = ?

Sorry for askin so many questions im just trynna get all of my work done on khan academy

Which of the following equations have complex roots? A. x^2=-7x-2 B. x^2+3x+9=0 C. x^2=5x-1 D. x^2=-7x+2

You can model the population of a certain city between the years 1965 and 1995 by the radical function P (x) = 75,000 cubed root of (x-1940). Using this model, in what year was the population of that city 245,000?

Vertical angles [2 (x+10) ] degrees and (3x-30) degrees, what is the value of x?

Megan constructed triangle ABC. In Megan's triangle, m∠A is represented by x°, m∠B is 4 times greater than m∠A, and m∠C is 30° less than 5 times m∠A. Choose the statements that are true about the triangle Megan constructed. Select all that apply.

Sylvia has completed 8 map exercises e. This is one fourth of the assignment. How many exercise were assigned?

Change 1/50 to a decimal

Put the following decimals from least to greatest:0.258,0.4,0.52,1.25,0.04

How can you tell if a division problem as a remainder without dividing

a driver just reached his maximum depth of - 43 feet. what does - 43 mean in the context of the problem

How do I show the relationship between two triangles