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

What is the relationship between the sine and cosine of complementary angles and why is the relationship true?

3x = 66 as a logarithmic function.

Some of the earliest written biographies were

Which statements describe the influence of globalization on most economies? Check all that apply. Most countries are increasingly specializing production. Most

How can we connect Justinian I to U.S. Government. (Open ended question)

Which of the following best describes the social conditions under which Mansfield wrote "The Daughters of the Late Colonel"? A. Women were allowed little fre

Ruben earns $4 an hour as a cashier and $5.50 and hour as a waiter. If he works 5 days per week, how much does he earn if he works 4 hours a days as a cashier a

Jamie purchased a condo for $89,900 with a down payment of 20%; her credit terms were 5% for 15 years. what is jamie's monthly payment?

What is the 12th term of the sequence 20, 16, 12...?

This is the scientific name for humans, sometimes referred to as anatomically modern humans or amh.