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please solve this using quadratic formula :") Find: a b c Plaese help 15x - 30 x 0 + 40 = 89 A car engine burns gas at 495 K and exhausts to the air at 293 K. What is the highest possible efficiency it could have?(NO UNIT) Please answer this in two minutes Construct a polynomial function with the stated properties. Reduce all fractions to lowest terms. Second-degree, with zeros of 7 and 6, and goes to as x. WILL MARK BRAINLIEST If Alan and Zack can clean a room in 30 minutes when working together, and Alan cleans twice as fast as Zack, how long would it take Alan to clean the room by himself? Rectangle ABCD is graphed in the coordinate plane. The following are the vertices of the rectangle: A(-8, -6), B(-3,-6), C(-3, -4), and D(-8, -4). Given these coordinates, what is the length of side AB of this rectangle? A particle moves in a velocity field V(x, y) = x2, x + y2 . If it is at position (x, y) = (7, 2) at time t = 3, estimate its location at time t = 3.01. Two buses are moving in opposite directions with velocities of 36 km/hr and 108km/hr. Find the distance between them after 20 minutes. esearch examining the expectations that kids in grades 7 through 11 have about drinking alcohol revealed that some of the students begin drinking because they think it will have positive effects on their social behavior and cognitive and motor skills, a phenomenon called Obesity increases the risk of many types of _____. 24 t 1,507 lb 12 oz + 7 t 938 lb 6 oz Why were many Americans nervous about John Adams becoming President? Andy designed a web page for a product-oriented industry using CSS properties. He used several HTML tags to create the web page. He also used tables to ensure that the data is easily managed. Andy wants the borders to be distinctly visible for each cell in the product details table. Which of the following properties must Andy add to his code to accomplish his goal? A. border-spacing: length; B. border-collapse: separate; C. border-collapse: collapse; D. border-spacing: initial; quin es Kasin de las Mil y una noches The Home minister........ in Surkhet this morning.(arrive) I need help!- 7(x + 2) = 21 Please help with step by step. Thank you. Attribution is a two-step process in which we first________ make an internal attribution of others behavior, and then more _________ adjust the attribution to account for situational factors. A. enthusiastically, reluctantly B. reluctantly, enthusiastically C. spontaneously, consciously D. consciously, spontaneously