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4 years ago

At a local department store, cardigans are typically priced at $15. Due to a special,

Mathematics

1 answer:

nevsk [136]4 years ago

4 0

Answer:

Step-by-step explanation:

80% of 15 is 12

15-12=3

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The speed of water in a whirlpool varies inversely with the radius. If water speed is 2.5 feet per second at a radius of 30 feet

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The speed of the water in the 3 feet radius is 25 feet per second.

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If you flip a fair coin 7 times, what is the probability that you will get exactly 4 tails?

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Leonard spent 1 fourth of his money on a sandwich. He spent 2 times as much on a gift for his brother as on some comic books. He

natima [27]

Answer:

1/8

Step-by-step explanation:

Leonard spent 1 fourth of his money on a sandwich.

Fraction of money spent on sandwich = 1/4

He spent 2 times as much on a gift for his brother as on some comic books.

= 1/4 × 2

= 2/8

Hence, Fraction of money spent on Comic books = 2/8

He had 3 over 8 of his money left.

Let us represent his total money has: 1

The fraction of his money that he spent on the comic books is calculated as:

= 1 -( 1/4 + 2/8+ 3/8)

Lowest Common Denominator = 8

= 1 - (2 +2 + 3/8)

= 1- 7/8

= 1/8

Therefore, the fraction of his money that he spent on the comic books is 1/8

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3 years ago

The height of a giant redwood tree is 200 feet, and the height of an oak tree is 120 feet. Taking the height of the redwood tree

marta [7]

Answer:

$\% Change = \frac{|120-200|}{200} *100 = 40\%$

And the interpretation for this value is that the oak tree is have a height of 40% lower than the Redwood tree

Step-by-step explanation:

For this case we can calculate the % of change with the formula of relative change given by:

$\% Change = \frac{|New -Base|}{Base} *100$

For this case the Base value is 200 ft since represent the heigth of the redwood tree selected as the base

And the New value would be 120 who represent the height of the oak tree

If we replace into the formula we got:

$\% Change = \frac{|120-200|}{200} *100 = 40\%$

And the interpretation for this value is that the oak tree is have a height of 40% lower than the Redwood tree

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4 years ago