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andrey2020 [161]
3 years ago
14

) 1.What is the additive of 3/8

Mathematics
1 answer:
tekilochka [14]3 years ago
6 0

Answer:

3

Step-by-step explanation:

3 + (-8) - (-8)

= 3 - 8 + 8

= 3

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In a flight of 600 km, the speed of the aircraft was slowed down due to bad weather. The average speed of the trip was decreased
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The average speed would be 600 km/hr.

Step-by-step explanation:

Let the original speed be 'x'

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According to question, it becomes,

\dfrac{600}{x-200}-\dfrac{600}{x}=\dfrac{30}{60}\\\\\dfrac{x-(x-200)}{x^2-200x}=\dfrac{1}{2\times 600}\\\\\dfrac{200}{x^2-200x}=\dfrac{1}{1200}\\\\240000=x^2-200x\\\\x^2-200x-240000=0\\\\x=600,-400

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5 0
3 years ago
Alice and Shivani went to lunch at a cafe. They ordered a spinach salad for $5.75, a tuna sandwich for $7.20, and 2 glasses of l
Vikki [24]

Answer:

$2.90

Step-by-step explanation:

Spinach    $5.75

Tuna         $7.20

2 lemonades    $2.60

tax =  $1.55

Sum = $17.10

Change = $20.00 - $17.10 = $2.90

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Step-by-step explanation:

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