4) Se a = 7, b = - 3 e c = 2, a equação do 2º grau que corresponde a esses coeficientes é: 2x (x+1) + 5x² - 5x = - 2 2x² + 7x - 5 = 0 3x² - 7 = 0 4 (x² + 7) - 3x - 7 = 0 Nenhuma das alternativas acima.

A collection of dimes and nickels is worth $4.70 there are 60 coins in all how many of each are there?

Which ordered pair is a solution of the inequality? 3y-6<12x 1. (-3,8) 2. (4,18) 3. (4,-2) 4. (0,7)

What is 4x4+6178/17x8

Stonehenge 2 in hunt, Texas, is a scale model of the ancient construction in Wiltshire, England. The scale of the model to the original is 3 to 5. The altar Stone of the original construction is 4.9 meters tall.

How much larger is a gallon than a quart?

The ratio of the number of B's to the number of C's is 15 - 20 write the ratio three different ways be sure to simplify

What is the total amount in an account that has had $35 per month added into it for 30 years and grew with an annual interest rate of 7%?

Phil has 3 times as many rocks as peter. Yogether, they have 48 rovks. How many more rocks does phil have than peter

James knows that when h walks, he takes about 120 steps per minute and that each step is 2.75 feet long. Which calculation is most reasonable for James to use to find out his walking speed in miles for hour?

Aidan works a different number of hours each week, depending on whether he is needed or not. For the last nine weeks, he has worked the following number of hours.