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1. Liza and Marta mow lawns during the summer to earn money. Liza determined that she can earn between $6.00 and $6.25 per hour. Marta estimates that she earns between $7.50 and $8.00 per hour. About how much more money will Marta earn than Liza if they each work 22 hours?A. $25.01 to $45.00B. $65.01 to $85.00C. $45.01 to $65.00D. $5.00 to $25.002. Last month, Belinda worked 160 hours at a rate of $10.00 per hour. If her employer retains 9% of her gross salary, is $1,500 a reasonable estimate of her net salary?A. Yes, because $1,500 is close toB. No, because $1,300 is a better estimate.C. No, because retaining 10% of her salary would leave her with about $1,350.D. Yes, because her salary will be a bit more than |
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Answer» R1 = 2 ohm R2 = 3 ohm R3 = 6 ohm (a) When R2 and R3 are CONNECTED in PARALLEL with R1 in series we GET 1/R = 1/R2 + 1/R3 g= 1/3 + 1/6 = 1/2 Thus, R = 2 ohm RESISTANCE in series = R + R1 = 2 + 2 = 4 ohm (b) When R1,R2, R3 are connected in parallel we get 1/R = 1/R1 + 1/R2 + 1/R3 = 1/2 + 1/3 + 1/6 = 1 ohm. |
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