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nadya68 [22]
3 years ago
15

​ −3x+3y=9 2x−7y=−14 ​ ​

Mathematics
1 answer:
svet-max [94.6K]3 years ago
7 0
(x, y) = (-7/5, 8/5)
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5(8x-3)+4(-6x-4)<br> Distribute then simplify
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Answer:

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Step-by-step explanation:

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5(8x - 3) +4(-6x - 4)

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The cost of 90 kg of rice is 4500. what is the cost of 2 quintal of rice?​
gayaneshka [121]

Answer:

The cost of 2 quintal of rice is $10,000.

Step-by-step explanation:

To determine the cost of 2 quintals of rice, knowing that 90 kilos of said product is worth $ 4,500, it is first necessary to establish the equivalence between quintals and kilograms. In this regard, a quintal is equivalent to 100 kilograms, so 2 quintals are equivalent to 200 kilos.

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3 years ago
A helicopter is hovering 110 feet in the air over a landing pad. If a man sees the helecopter at an angle of elevation of 29°, w
Pavel [41]
See the attached figure to better understand the problem

we know that

tan 29°=AC/CB--------> CB=AC/tan 29°
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</span>so
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the answer is
the man is  198.45 ft  from the helicopter landing pad 

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Step-by-step explanation:

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3 years ago
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