
23 stones will be needed (you have to round up, since you can't have a fraction of a stone)
Answer: you can use take out the 5 and multiply 5 by 120=600.then take out the 6 and multiply 6 by 120=720.then take 600 and 720,put it into a fraction.
Answer:
22.5
Step-by-step explanation: you just divide the two numbers :)
Answer:
x=5, y=-2. (5, -2).
Step-by-step explanation:
2x+3y=4
3x+4y=7
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3(2x+3y)=3(4)
-2(3x+4y)=-2(7)
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6x+9y=12
-6x-8y=-14
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y=-2
2x+3(-2)=4
2x-6=4
2x=4+6
2x=10
x=10/2
x=5
Answer: -1.13
Step-by-step explanation: