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 a semantic map?

Describe one significant continuity in the power of the European monarchs during the period 1450-1598.

Fill in the blank with the French word that best completes the sentence...... Elle déteste________. A. gagner B.prendre C. danser D.passer

Not pure, has deposits of iron and other minerals. A. Primary Clay B. White Clay C. Secondary Clay D. Other:

Which property of matter during a chemical change but does not change during a physical change

Pentagon JKLMN is similar to pentagon VWXYZ. What is the measurement of angle X? Group of answer choices 60o 120o 150o 30o

Ordering Rational Numbers 0.32, 3/55 0.31

6. (CG2b) Locke and Hobbes would most likely agree that a. the state developed out of the social contract b. those of royal birth have the right to rule other p

twice the sum of a number and 400. Translate the verbal expression into an algebraic expression plz

The daily production cost, C, for x units is modeled by the equation: C = 200 – 7x + 0.345x2