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2 years ago

Solve 2x2 + 5x = 12

Mathematics

2 answers:

nikdorinn [45]2 years ago

4 0

The answer to this question is A

Delvig [45]2 years ago

3 0

Answer:

Step-by-step explanation:

2x² + 5x = 12

2x² + 5x - 12 = 0

x² + 5x - 24 = 0

factors of 24 are 1, 2, 3, 4, 6, 8, 12, 24. the only pair that adds to 5 is 8 and 3

2x² - 3x + 8x - 12 = 0

split the equation and factor

2x² - 3x = 0 ||| 8x - 12 = 0

x(2x - 3) ||| 4(2x - 3)

therefore the pair is (2x - 3)(x + 4)

2x - 3 = 0

2x = 3

x = 3/2

x + 4 = 0

x = -4

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disa [49]

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Step-by-step explanation:

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for 24/32 divide both numbers by 8

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3 years ago

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3 years ago

Mr. Engen rented a car for 35.00 a day and 0.45 a mile . He had the car for 2 days and paid 166.75 . How many miles did he drove

liubo4ka [24]

d = days rented for

m = miles driven for

so the cost of the car is 35 bucks a day and 45 cents or $0.45 per mile driven, let's check it out for say a few days

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2nd day, 2 miles..................35(2) + 0.45(2)

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so the cost function could be written as C = 35d+0.45m.

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3 years ago

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Elenna [48]

Answer:

$11 \frac{25}{64}$

<h3>First answer is correct</h3>

Step-by-step explanation:

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