If you're trying to find the missing side of the "triangle" (the distance from the house to where the ladder touches the ground), you would use the pythagorean theorem, a²+b²=c². (c is always hypotenuse)
a²+b²=c²
12²+b²=15²
144+b²=225
b²=81
√b²=√81
b=9
Answer:
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Step-by-step explanation:
Answer:
Answer:12 ribbonsStep-by-step explanation:We know that 6 of 2/3 m ribbon will give a lenth of 4 m long.Therefore we need 6 x 2 = 12
1 chair = X
8 chairs = 8X
1 table = Y
8X - Y is the more amount you paid for chairs
