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Gnoma [55]
3 years ago
12

Isabella has twice as much money invested at 4% as she has invested at 3%, and she has $500 more invested at 5% than she has at

3%. If the annual income from these three investments is $2025, how much does she have invested at 4%?
Mathematics
1 answer:
leva [86]3 years ago
7 0
.04(2x)+.03(x)+.05(500+x)=2025

.08x+.03x+.05x+25=2025

.16x+25=2025

.16x=2000

x=12500

She has 2x invested at 4%, so she had $25000.00 invested at 4%.
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Answer:

The doctor's dosage was not appropriate.

The right dosage is from 56.625 mg to 113.25 mg of Antibiotic to be given every 6 hour for the child with weight 25 lbs.

Step-by-step explanation:

It is given that 20 to 40 mg/kg/day is the recommended dosage.

Now, the doctor's order is 150 mg of antibiotic to be given every 6 hours. And my child weighs 25 lbs.

Now, 1 lb is equivalent to 0.453 kg.

So, my child's weight is (25 × 0.453) = 11.325 kg.

So, the doctor's order is 150 mg of antibiotic to be given every 6 hours for a child of weight 11.325 kg.

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