Answer:
x=5 and y=-2
Step-by-step explanation:
3x+5y=5
-(7x+5y=25)
-4x=-20
x=5
plug 5 into one of the equations. 3(5)+5y=5
y= -2
Answer:
NO = 20
Step-by-step explanation:
If the pieces are in the ratio of 3:1:5 and the whole thing is 36, then set up an equation:
3x + 1x + 5x = 36
and solve, see image.
Answer:

Step-by-step explanation:
Answer:
-1 + -4 = -5 below zero....If the temperature is -1 + 4 the temperature would be 3 degrees (-1+4=3)
Step-by-step explanation:
If the temperature is -1 + -4 = -5 below zero (adding two negatives equal a negative number).
If the temperate is -1 + 4 = 3 (+4-1=3) The number is positive because it is larger than the negative number.