Answer:
Step-by-step explanation:
let x < 30 be the width of strip of lawn.
then (80-2x)(60-2x)=800
4800-160x-120x+4x²=800
4x²-280x+4000=0
x²-70 x+1000=0
x²-20x-50x+1000=0
x(x-20)-50(x-20)=0
(x-20)(x-50)=0
x=20,50
x=50(rejected)
x=20 m
Does not do instrument and sport will be 2 (middle). Then you can go horizontol for does not play sport with the total being 7 (middle right) . 25 - 7 = 18 (top right). 18 - 16 = 2 (top left). 5 + 2 = 7(Bottom left)
Hope it helped because i cant really draw on it. :<
Answer:9
Step-by-step explanation:
Because if 1/2 is 1 wall then you can multiply 4•2=8 then add the other 1/2
Answer:
-0.5
Step-by-step explanation:
The 2x’s cancel out so you would combine the y’s and the other side of the equal sign to get 6y=30. You would then divide each side of the equal sign by 6 to get y alone, leaving you with y=5. Next, plug in the y to either the top or bottom equation. Plugging it in to the top, you would get 2x+4(5)=22. You would multiply 4 and 5 to then get 2x+20=22. Lastly, subtract 20 from both sides then divide by 2 to get x=1.
The answer is (1,5).