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maustin5323
22.02.2021 •
Mathematics
The resistance, R, of a wire varies directly as its length and inversely as the square of its diameter. If the resistance of a wire 4100ft long with a diameter of 0.11 inches is 7858 ohms, what is the resistance of 3300ft of the same type of wire with a diameter of 0.06 inches? (Leave k in fraction form or round to at least 3 decimal places. Round off your final answer to the nearest hundredth.)
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Ответ:
She planted 7 zucchini, 14 cucumbers, and 22 tomatoes.
Let z = the number of zucchini planted. Since she planted twice as many cucumbers as zucchini, 2z is the number of cucumbers. She planted 8 more tomatoes than cucumbers, so 2z + 8 is the number of tomatoes. This gives us the equation
z + 2z + 2z + 8 = 43
Combining like terms, we have
5z + 8 = 43
Subtract 8 from each side:
5z + 8 - 8 = 43 - 8
5z = 35
Divide both sides by 5:
5z/5 = 35/5
z = 7
There were 7 zuccchini; 2*7 = 14 cucumbers; and 14+8=22 tomatoes.