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Step2247 [10]
3 years ago
10

Is a diameter of circle O. If m∠ACB = 30°, what is m∠DBA? A. 30° B. 50° C. 60° D. 70° E. 90°

Mathematics
1 answer:
lesya692 [45]3 years ago
6 0

Every triangle equals 180 degrees, and we're trying to find the angle of DBA. So, we can identify DAB as a 90 degree angle to start. Then we can identify that ACB = ADB, meaning ADB is 30 degrees. With that information, we have this equation:

DBA = 180 - 90 - 30

DBA = 60

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Manny has 48 feet of wood. He wants to use all of it to create a border around a garden. The equation 2l + 2w = 48 can be used t
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I hope this helps you




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8 0
3 years ago
Read 2 more answers
Write your answer in simplest radical form​
Licemer1 [7]

Answer:

a = 4\sqrt{3}

Step-by-step explanation:

Using the cosine ratio in the right triangle and the exact value

cos60° = \frac{1}{2} , then

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3 0
3 years ago
Twenty percent of a mixture of pure milk and water is water. Half a litre of wine is added to one litre of the mixture of water
Murrr4er [49]

Answer:

In the new mixture, the percentage of water with respect to its total is 13.33%.

Step-by-step explanation:

Given that in a liter of mixture 20% of it was water and the remaining 80% was pure milk, and that half a liter of wine was added to that liter of mixture, to determine the percentage of water in the new mixture is necessary to perform the following calculation:

20 + 80 + 50 = 150

150 = 100

20 = X

((20 x 100) / 150) = X

2,000 / 150 = X

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Thus, in the new mixture, the percentage of water with respect to its total is 13.33%.

8 0
3 years ago
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