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bearhunter [10]
2 years ago
15

Bridget and Caroline are marking exam papers. Each set takes Bridget 91 minutes and Caroline 2 hours. Express the times Bridget

and Caroline take as a ratio in its simplest form.
Mathematics
1 answer:
belka [17]2 years ago
5 0
The ratio is 91/120 because 91 is only divisible by 1, 7, 13, 91 and 120 is not divisible by 7, 13, or 91 so you cannot reduce this ratio
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A photo of a painting measured 13 x 17 inches the scale of the photo to the original painting is 1 inch to 3 inches. What is the
bulgar [2K]

Answer:

  29 × 51 inches

Step-by-step explanation:

If the scale is ...

  photo : painting = 1 : 3

then each dimension of the painting is 3 times the corresponding dimension of the photo. The painting is (3×13) by (3×17) inches, or 39 × 51 inches.

5 0
3 years ago
Please help me asap
german
The answer is 86.4 I believe.
5 0
2 years ago
What is the value of x?<br><br> sin49° = cosx<br><br> Enter your answer in the box.<br><br> x = ? °
Anni [7]

Answer:

x = 41^{\circ}

Step-by-step explanation:

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2 years ago
The product of a real number and another real number that is 6 less than the first equals 6. What are the numbers?
malfutka [58]
1? Or dividend or multiplication
5 0
2 years ago
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A drug used to relieve anxiety and nervousness has a half-life of 16 hours. if a doctor prescribes one 2.8-milligram every 24 ho
dlinn [17]

After 24 hours, 35.4% of the initial dosage remains on the body.

<h3>What percentage of the last dosage remains?</h3>

The exponential decay is written as:

f(x) = A*e^{-k*x}

Where A is the initial value, in this case 2.8mg.

k is the constant of decay, given by the logarithm of 2 over the half life, in this case, is:

k = ln(2)/16h

Replacing all that in the above formula, and evaluating in x = 24 hours we get:

f(24h) = 2.8mg*e^{-24h*ln(2)/16h} = 0.9899 mg

The percentage of the initial dosage that remains is:

P = \frac{0.9899mg}{2.8mg}*100\% = 35.4\%

If you want to learn more about exponential decays:

brainly.com/question/11464095

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8 0
2 years ago
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