False. Because 77×6×100 is 46200
Speed = distance / time
so ur speed = (3/5) / (3/8) = 3/5 * 8/3 = 8/5 or 1 3/5 miles per hr.
its the first answer choice
Answer:
22 1/2 hours
Step-by-step explanation:
There are several ways you can get there. One way is to use table values to form a sum of 60:
cars = 32×2 - 8×(1/2) = 64 -4 = 60
Then the corresponding hours are ...
hours = 12×2 - 3×(1/2) = 24 -1.5 = 22.5
It will take 22.5 hours to wax 60 cars.
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Another way to get there is to use proportions:
hours/cars = 3/8 = ??/60
Multiply by 60 to find ??
(60)(3/8) = ?? = 180/8 = 22.5 . . . . hours
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We can do these things because we have determined the relationship between hours and cars is proportional: 8/3 = 16/6 = 32/12. If it weren't proportional, some other strategy would be needed to answer the question.
The answer has to rationally be 14, because it is a longer side than the other which is 7 times the square root of 2 and 7 times square root of 3 and it cannot be 7 because that is less than the results of both the other options that are incorrect. Fourteen is the highest option, and the angle opposite the right angle must be the hypotenuse, which means the longest side of the triangle. Therefore, 14 is the answer.
(5x+17)+129+94+(7x-46)+(9x-11)=540
5x+7x+9x+17+129+94-46-11=540
21x+146+94-57=540
21x+240-57=540
21x+183=540
-183 -183
21x=357
/21 /21
x=17
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hope it helps