Answer:
sweatshirts cost $42
t-shirts cost $18
Step-by-step explanation:
9x+3y=288
x+6y=270
substitute 270-6y for x in the first problem
9(270-6y) +3y=288
2430-54y+3y=288
2430-51y=288
51y=-2142
y=42
then plug y=42 into the second equation
x+6(42)=270
x+252=270
x=18
Answer:

Step-by-step explanation:
Factor out 7 from top and bottom :

Divide top and bottom by 7 :

Simplify :
Simplify :
Collect everything together :

Hope this helped and have a good day
Answer:
x = 7
Step-by-step explanation:
y = 14
14 x 2 = 28
Therefore:
3.5 x 2 = 7
If you mean how far did you go you went 80 km
Which choice does not name a chord of circle
FE is not a chord
Point F is not on the circumpherence.