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 material absorbs the most solar radiation

I have to substitute 4 to x+10=4x-2

Read the excerpt from “Take the Tortillas Out of Your Poetry.”My friend had concluded that if he took his language and culture out of his poetry, he stood a bet

why has America been referred to as " the land of opportunity"?

An artist is cutting pieces of ribbon to use in a project. Each piece he cuts measures 7/8 inch. The artist cuts off 5 pieces. How many total inches of ribbon

Why did Washington Issue this "Neutrality Proclamation".

Read the following excerpt from "Ellis Island” by Barbara Davis-Pyle. As we waited for our turn, Cella and I gaped at all the bright colors from faraway lands.

Which of these are defining characteristics of language? Select all that apply. arbitrary figurative significant systematic inherent

What kind of decoration did artists use on Tutankhamen's throne?

Question at the top : which choice describes the media being a government “watchdog”