Given: ABCD is a rectangle, AC ∩BD = O, m∠ABD=30°, AC=16 in. Find BC.

Mathematics

1 answer:

nata0808 [166]2 years ago

7 0

Answer:

Step-by-step explanation:

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This is a mixture problem.

Let the 9 karat gold to be mixed be x. The 18 karat would weight (200 - x). Since the total = 200g.

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What is the length of AD?

Setler [38]

We find the length of AD using the similarity of right triangle property. See image attached.

AD² = BD × CD
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The length of AD is 18 units