How to solve 2x+y=2 and x+y=-1

Scottish researchers compared rates of depression between 94 undergraduates who regularly kept diaries and 41 students who did not. They found that people who kept diaries were more likely to have depression than those who did not.

three eights of the students in Ms. Dulls class ride the bus if there are 24 students in class how many students ride the bus explain how to use equivalent fractions to solve

To find a baseball pitcher's earned run average (ERA), you can use the formula Ei=9r, where E represents ERA, i represents number of innings pitched, and r represents number of earned runs allowed. Solve the equation for E ... ?

Cornelia made 5/8 of her free throws for the season. What percent of her free throws did she make for the season

What is five times a number less than 18 is equal to 13

Marta said 50 + 1/2m=120 is an equation, while Maribel argued that it is an expression. Determine who is correct and explain why.

What is the degree of the polynomial 2x3 - 3x2 + 4x + 5

Convert r^2 sin (2 theta) = 4 to Cartesian form.

Mickael Saltwood can paint 138 doors in 10 hours, while Scott Kepler can paint 59 doors in 5 hours. Who can paint doors faster, Mickael or Scott?

Solve 2 (*+5) + 3*=20 equation with variable on one side