(x, y ) = (- 6, 3 )
Since both equations express y in terms of x, we can equate them
2x + 15 = - 
x + 1
( add x to both sides )
x + 15 = 1 ( subtract 15 from both sides )
x = - 14
( multiply both sides by 3 and divide by 7 )
x = ( 3 × - 14 )/7 = - 6
substitute x = - 6 into either of the 2 equations for y- coordinate )
y = ( 2 × - 6 ) + 15 = 3
solution : (x, y ) = ( - 6, 3 )
Lol the answer is 11 of course
We will use a system of equation for this one.
P=Peanuts; C=Cashews
P+C=20
This represents the pounds.
10P+9C=191
We can make the first equation equal C.
C=20-P
10P+9(20-P)=191
10P+180-9P
P+180=191
P=11
There are 11 pounds of peanuts, which means there's 9 pounds of cashews.
Answer:
D) Comutativa
Step-by-step explanation:
a+b=b+a (álgebra)
espero que te sirva mi ayuda
x +80 >-3x
add 3x to each side
4x+80 >0
subtract 80 from each side
4x>-80
divide both sides by 4
x > -80/4
x>-20
