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DochEvi [55]
3 years ago
13

Dahlia has just enough money to buy either 6pears and 20oranges or 12oranges and 11pears. A pear costs $0.80. How much does an o

range cost?
Mathematics
1 answer:
Ray Of Light [21]3 years ago
8 0
20 - 12 = 8 oranges;
11 - 6 = 5 pears;
8 oranges costs as much as 5 pears;
But, 5 pears costs 5 × 0.80 = $4;
Then, an orange cost 4 ÷ 8 = $0.5;
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mihalych1998 [28]

Answer:

C) π/6

Step-by-step explanation:

The area under the curve from x=-π/2 to x=k is 3 times the area under the curve from x=k to x=π/2.

\int\limits^k_{-\frac{\pi }{2}} {cos\ x} \, dx = 3\int\limits^{\frac{\pi }{2}}_k {cos\ x} \, dx\\sin\ x\ |^{k}_{-\frac{\pi }{2}} = 3\ sin\ x\ |^{\frac{\pi }{2}}_k\\(sin\ k - (-1)) = 3\ (1 - sin\ k)\\sin\ k + 1 = 3 - 3\ sin\ k\\4\ sin\ k = 2\\sin\ k = \frac{1}{2}\\k = \frac{\pi}{6}

Graph: desmos.com/calculator/mezlen9hb4

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3 years ago
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7 0
3 years ago
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topjm [15]

Answer:

x = 6, y = 3

Step-by-step explanation:

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Plug 6 in for x in the second equation to get 6 - y = 3, which means y = 3.

7 0
3 years ago
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Mamont248 [21]

Answer:

y = -2

Step-by-step explanation:

Move all the unknown no. to one side:

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Solve the equation:

y = -2

8 0
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I have a screenshot attached as proof :)

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