Which of the following quadratic equations has no real solutions?

Which of the following polynomial function can be used to model the height of a ball thrown into the air?

The population of a city grows at a rate of 2,000 people per year. If the population is initially 100,000 people, which of the following equations represents the population (P) in terms of the number of years (t)?

What is the slope-intercept form of the equation 12x - 6y = 24? 

Consider the relation R defined by the equation y = \sqrt{(x + 2)} , where the domain and codomain are specified as follows: 

Domain: (-∞, ∞) 

Codomain: [0, ∞)

The above relation is a function.

What is the standard form of a quadratic equation? 

З 200 студентів 1-го курсу 120 вивчають англійську

мову, 100 – німецьку, 60 – обидві мови. Знайти ймовірність, що довільно взятий

студент вивчає або англійську, або німецьку мову.

Un des indicateurs est négatif: lequel, et qu'est-ce que cela nous dit?