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3 years ago

The sum of two

Mathematics

1 answer:

sergeinik [125]3 years ago

8 0

Answer:

Step-by-step explanation:

let the two numbers be x,y (x>y)

Then x+y = 16 and x-y = 2

We know that (x+y)^2 - (x-y)^2 = 4xy

So 4xy = 16^2 - 2^2 => 4xy = (16+2)(16–2)

So xy = 18×14/4 = 63

Product of the numbers = 63

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Bas_tet [7]

Answer:

135 ft^2.

Step-by-step explanation:

The total surface area

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= 2 * 1/2 * 2.5*6 + 8*6 + 8*6.5 + 8*2.5

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3 years ago

A consultant advises the owners of a phone company that their profit

KATRIN_1 [288]

Answer:

$15.63 ≤ x ≤ $54.365

Step-by-step explanation:

Profit of the phone company is modeled by the equation,

p(x) = -50x² + 3500x - 2500

For the profit of at least $40000,

-50x² + 3500x - 2500 ≥ 40000

-50x² + 3500x ≥ 40000 + 2500

-50x² + 3500x ≥ 42500

-x² + 70x ≥ 850

x² - 70x + 850 ≤ 0

By quadratic formula,

x - intercept of the inequality will be,

x = $\frac{-(-70)\pm \sqrt{(-70)^2-4(1)(850)}}{2(1)}$

x = $\frac{70\pm \sqrt{1500}}{2}$

x = 15.635, 54.365

Therefore, $15.635 ≤ x ≤ $54.365 will be the range of cost for which profit will be at least $40000.

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2 years ago

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Summit Plummet's big drop starts at point A(0, 120) and ends at point B (56, 0). What's the slope from point A to point B?

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Answer:

15/-7

Step-by-step explanation:

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