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

find the difference 0.5- (-1.5)=

The bakers at Healthy Bakery can make 150 bagels in 2 hours. How many bagels can they bake in 12 hours? What was that rate per hour?

A car travels at a speed of 50 miles per hour for 3 hours. Would the graph that describes this situation be continuous or discrete? discrete continuous canno

For BTS Army only:Should I do:Persona - Shadow - Ego Or:Persona - Daechwita - EgoTysm bye! Stream Dynamite

Try These questions out and I’ll give you brainliest write 2 supporting Main ideas

What 3 regions are located closest to the Fertile Crescent * Middle East Near East Northern Africa Asia Madagascar Australia North America Canada Hollywood

QUICK!!! please answer, first answer will get marked Brainlyest!

Please help it is did today

kayla has 20 feet of ribbon that she will cut into pieces. each piece will be 1/2 foot long.

Find the indicated area under the curve of the standard normal distribution; then convert it to a percentage and fill in the blank. About ______% of the area