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

True or False? Fiber can reduce cholesterol levels and risk of heart attack, and can also prevent constipation.

In scientific notation what is the radius of the sun

The Tempest Sc. 1, Lines 56-66: What can you infer about how Gonzalo differs from his companions?

Mr. Sloan is purchasing 2.3 pounds of trail mix that costs $6.25 per pound. How much change will Mrs. Sloan receive if she gives the cashier $20. do it on rati

On a road map, the locations A, B and C are collinear. Location C divides the road from location A to B, such that AC:CB = 1:2. If location A is at (5,16) and l

2/3+1/3x=2x x=1/2 x=5/2 x=2 x=2/5

PLSSSS HEP ITS URGENT!! 1+6=6x6/6

33 56 Find the unknown side length, x. Write your answer in simplest radical form. A 2047 B. 60 С. 5169 D. 65

The author sets the tone for the book by setting the foundation of the story in the Indian legend, ''The Pearl of the World''. What are some of the events that

9 Dusty found out that each grain of sand weighs 40000 or .000025 of a pound. He decides to write this number in scientific notation. 2.5 x 10 What value should