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Lyrx [107]
2 years ago
13

21 POINTS!Jeff had $20. He spent 3/8 of his money on lunch. How much money does jeff have left?

Mathematics
1 answer:
lara [203]2 years ago
4 0

Answer:

$12.50

Step-by-step explanation:

3/8 x 20/1 = 7.5

20 - 7.5 = 12.50

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Step-by-step explanation:

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The area of the following equilateral triangle is 62.4 square feet that is he height
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The height of this triangle would be 10.4

In order to find this, you first must find the length of the sides. Using a manipulated formula for area of an equilateral triangle, we can determine the lengths of the side. Below if the formula.

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In this, S is the length of the side and A is the area. So we plug in and get:

S = \frac{2}{3}3^{\frac{3}{4}} \sqrt{62.4}

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Now that we have the side as 12, we can use the Pythagorean Theorem to find the height. If you split a equilateral triangle down the middle, you are left with two right triangles. Using this right triangle, the hypotenuse would be 12, the first leg would be 6 (half of the base) and the height would be the other leg. So we plug in and solve.

a^{2} + b^{2} = c^{2}

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3 years ago
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These marbles are placed in a bag and two of them are randomly drawn. What is the probability of drawing two pink marbles if the
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Answer:

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Similar probability for an other pink marbles

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3 years ago
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Marizza181 [45]
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