mperez35641 mperez35641
  • 25-01-2017
  • Mathematics
contestada

how do i evaluate 3X + y for X = 2 and y = -1

Respuesta :

granthouston01 granthouston01
  • 25-01-2017
3(2) + -1
6-1=5

6-1 is from the 1 being a negative already.
Answer Link
MusicFreak
MusicFreak MusicFreak
  • 25-01-2017
When you see a coefficient (the number next to the letter) next to a variable (the letter), you multiply. So 3*2=6 So you have: 6+y, or since y=-1, 6+(-)1= 5
Answer Link

Otras preguntas

write an expression used to find 4x275 using mental math and properties of numbers
This country invaded Poland to start WWII in Europe, was divided during the Cold War, was reunified in 1990, and is currently a federal republic.
In which of the following sentences is 'but' used as a preposition? A. I wanted to leave, but I was embarrassed to do so. B. We discovered that Candy will do an
The diameter of a circular pool is 18 feet. What is the approximate area of the pool? A. 56.52 square feet B. 113.04 square feet C. 254.34 square feet D. 1
a hydrogen atom has one proton, two neutrons, and no electrons. Is this atom an ion? Explain your answer.
Are there any metaphors in the story "there will come soft rains"
f(x)= -1/4(x-1)^2- 3 I dont understand how to figure this question out, i ned the vertex, axis of symmetry, and the zeros.
One result of the Great Leap Forward was the death of____ million people. (2points) A. 5 B. 10 C. 15 D. 20 Help with history??
Explain the relationship between society and the technologies of using Earth's resources?
what challenges did the british army face