x+y+z=15
y =2x
z=y-20
substitute these equations into the first
x+2x+y-20 =15
now substitute 2x in for y
x + 2x +2x-20 =15
combine like terms
5x-20 =15
add 20 to each side
5x = 35
divide by 5
x=7
y =2x
y =14
z = y-20
z=14-20
z=-6
The third number is -6
32
20 notebooks for $10....they were 2 for $1
16x 2 is 32
Step-by-step explanation:
i gonna work this out soon
Answer:
42 Degrees
Step-by-step explanation:
All you really have to do is look on Google for examples of the angles: 23, 25, 65, and 42 and see which one looks like the same angle that the kite string is.
