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VLD [36.1K]
3 years ago
14

ASAP HELP 10.Simplify the following expression: 2n+4-0.3n-3

Mathematics
1 answer:
Oksana_A [137]3 years ago
7 0
1.7n +1
I think the is the answer
I hope this helps :)
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How many years will it take for an investment of $1000 to $2500 if it earns 6% compounded monthly?
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Answer:

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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.

3 0
2 years ago
2. Kyle owes his sister 24. He gives his sister $15 that he earned mowing
rusak2 [61]

ok so he is owing his sister 24 and he gives her 15

so 24-15=9

but as an addition expression it will be

x+15=24

x=24-15

x=9

3 0
3 years ago
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