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san4es73 [151]
3 years ago
9

The price of an item has dropped to $42 today. Yesterday it was $140. Find the percentage decrease.

Mathematics
1 answer:
ArbitrLikvidat [17]3 years ago
5 0
The item has 42/140 * 100,or 30% of its initial value. That means that it lost 70% of its value, so 70% is the percent decrease.
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A child is flying a kite 145ft above the ground. The string makes an angle of 57 degrees from the child's hands. How much has be
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Answer: the length of string that been let out to fly the kite this high is 172.89 ft

Step-by-step explanation:

The length of string attached to the kite, the vertical height of the kite above the ground and the ground distance forms a right angle triangle.

With an angle of 57 degrees, the length of the string that is attached to the kite represents the hypotenuse of the right angle triangle.

The height of the kite above the ground represents the opposite side of the triangle

To determine h, the length of the string that has been let out to fly the kite this high, we would apply the

Sine trigonometric ratio which is expressed as

Sine θ = opposite side/hypotenuse

Sin 57 = 145/h

h = 145/Sin57 = 145/0.8387

h = 172.89

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3 years ago
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Answer:

x=1

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What is the recursive formula for 100, 80, 64, 51.2?
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