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topjm [15]
2 years ago
9

A veterinarian knows that a 50-pound dog gets 0.5 milligram of a certain medicine, and that the number of milligrams, m, varies

directly with the weight of the dog, w. The vet uses these steps to find the amount of medicine to give a 10-pound dog. Step 1 Find the constant of variation. Step 2 Write the direct variation equation. Step 3 Substitute 10 into the equation to find the dosage for a 10-pound dog. Step 4 Solve for w. The 10-pound dog needs 1000 milligrams. In which step did the veterinarian make the first error? Step 1 Step 2 Step 3 Step 4
Mathematics
2 answers:
pav-90 [236]2 years ago
8 0

Answer:

Step 3

Step-by-step explanation:

They put the 10 in the wrong place.

fomenos2 years ago
7 0

1. Divide the amount needed by the weight:

0.5 milligram / 50 pounds = 0.01 milligram per pound.

2. m = 0.01w

3. m = 0.01(10)

4 m = 0.01 x 10

0.1 milligrams

The error was step 1.

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In segment AC, the midpoint is B. If segments AC = 5x-9 and AB = 2x, what is the measure of segment AC.
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Answer:

The measure of segment AC is 36 units

Step-by-step explanation:

- The mid-point divides the segment into two equal parts in length

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- That means B divides segment AC into two equal parts in length

∴ AB = BC

∵ AC = 5x - 9

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∵ AC = AB + BC

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∵ x = 9

∴ AC = 4(9) = 36

* The measure of segment AC is 36 units

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