Neslepe0rsm Neslepe0rsm

03-09-2016
Mathematics

contestada

what is the value of the expression 2x2 3xy – 4y2when x = 2 and y = –4? a. –80 b. –32 c. 32 d. 80

Respuesta :

nobillionaireNobley nobillionaireNobley

05-09-2016

2x^2 + 3xy - 4y^2 when x = 2 and y = -4
= 2(2)^2 + 3(2)(-4) - 4(-4)^2 = 2(4) + (-24) - 4(16) = 8 - 24 - 64 = -80

Answer Link

Otras preguntas

Which graph shows y=3⌈x⌉+1 ?

I will mark brainiest, thank, rate, and give robux to da best answer!Plese I kneed kelp!During how many months was the difference between the number of days wit

A satellite is in a circular orbit around the Earth at an altitude of 3.18x10 m. Find the period and th orbital speed of the satellite? A. T= 2.94 h, B. T= 3.23

Which rotation maps point K(8,-6) to K(-6, -8)?

What is the average de Broglie wavelength of oxygen molecules in air at a temperature of 27°C? Use the results of the kinetic theory of gases The mass of an oxy

What was Kentuck’s nickname for Tommy Luck?

A box is being pulled by two people. The ropes make angles of 40Â° and 55Â° with the direction of motion of the box. If the resultant force is 700 N, find the f

What is the value of the following expression? (false || (4-3 && 6)) true false 0 illegal syntax

At what height from the earth, g becomes?a)g/2b) 0.414 Rd) Rc) 0.7 R

The change of England's Biston betularia moth populations from light colored to dark colored is an example of _____.