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nydimaria [60]
2 years ago
12

If 15 units represent 90 kilograms what is the value of 6 units

Mathematics
1 answer:
bekas [8.4K]2 years ago
5 0

Answer:

36 kg

Step-by-step explanation:

Make a conversion factor.  If 15 units = 90 kg, then 90 kg/15 units = 6kg/unit.

(6kg/unit)*(6 units) = 36 kg

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Solve this please .......​
nikdorinn [45]

Answer:

The sum of reciprocals is 2/3.

You don't need complex numbers to solve this, but if you try to find a and b you will need complex numbers.

Step-by-step explanation:

a+b = 2

a*b = 3

1/a + 1/b = x

(a*b)*(1/a + 1/b) = (a*b)x

b + a = (a*b)(x)

2 = 3x

x = 2/3

b = 2 - a

a*(2 - a) = 3

-a^2 + 2a = 3

-a^2 + 2a - 3 = 0

a^2 - 2a + 3 = 0

let's solve the quadratic equation

a^2 - 2a + 3 = a^2 - 2a + 1 + 2 = (a - 1)^2 + 2 = 0

(a - 1)^2 = -2

a_1 - 1 = \sqrt{2}i\\a_1 = 1+\sqrt{2}i\\\\a_2 - 1 = -\sqrt{2}i\\a_2 = 1 - \sqrt{2}i\\

these options correspond to a and b from the original question.

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2 years ago
Kim purchased a desktop computer at Best Buy for 20% off the original price. If the original price of the desktop is $1500, how
Arturiano [62]

Answer:

So for this sale, you'll save $300.00 on this item.

This means, the cost of the item to you is

$1500 - $300.00 = $1200.00.

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3 years ago
What is the quotient? The problem has been started for you.
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Answer:

A) T'(-2,3), U'(0,5), V'(-1,0)

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Answer:

0.03125 inches 1 hour is the anwser

this also involves the conversion factor

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