Corradini905 Corradini905

11-06-2014
Mathematics

contestada

If x = 3 and y = -1, then 3x2 + 2xy - 5 = ?
A: 18
B: 24
C: 12
D: 16

Respuesta :

konrad509 konrad509

11-06-2014

[tex]3\cdot3^2+2\cdot3\cdot(-1)-5=27-6-5=16[/tex]

Answer Link

12-06-2014

[tex]x = 3 , \ y = -1 \\ \\ 3x^2 + 2xy - 5 = 3\cdot 3^2 + 2\cdot 3\cdot (-1)-5=\\ \\=3\cdot 9 -6-5=27-11=16 \\ \\ Answer : \ D: \ \ 16[/tex]

Answer Link

Otras preguntas

Ashton, Bryan and Charles were given the same number of funfair tickets to sell. Charles sold 92 tickets. Bryan had twice as many tickets left unsold as Ashton'

6. Describe the functions of the Infrastructure Tracking Unit, the Processing Unit, and the Visual Unit with clear flow charts? 7. List down and explain common

Acellus Business Math Question!

Handwritten solution required

If AC = 32 and BC = 24, find AB.

A circuit consists of a capacitor of 2 F and a resistor of 1000 Ω. An alternating current e.m.f of 12 V and a frequency 50 Hz is applied. Find; (i) the current

(c) The town of Hornsdale in Australia has electricity supplied by a huge battery. On one day the battery transferred 3.24 x 1011 J of energy to the town. The p

MY Partner's Name Is Joy he likes to be a farmer because he believed farmer is a profitable work depending in this story me 4 paragraph

You borrow 600$ to buy a violin.simple annual interest rate is 15$ you pay off the loan after 2 years of equal monthly payment. How much is each payment

Please help verify the identity of cos (x+ -5pi/4) = -sqrt2/2 (cos x + sin x)