The following equation represents the average rate for the trip. Is this equation equivalent to the one you wrote above? Explain why or why not. Average Rate= 2d/ (d/r1+d/r2)

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um of fractions in the denominator making cross product:  d / r1 + d / r2  Resulting:  d * r2 + d * r1 / (r1 * r2) Step 2:Multiply numerator and denominator by the following expression (r1 * r2) / (d * r2 + d * r1) Step 3: Take common factor in the denominator of the expression in step 2. (d * r2 + d * r1) = d * (r2 + r1). i think

Step-by-step explanation:

7 weeks

step-by-step explanation:

convert each fraction to the least common multiple of 20, so 3/4 = 15/20 & 1/10 = 2/20, then divide 15 by 2 and you get a little over 7, so the food will last 7 weeks.

answer: 20

step-by-step explanation: