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iris [78.8K]
3 years ago
11

Evaluate 3.5×3.5+0.5×3.5​

Mathematics
1 answer:
Tju [1.3M]3 years ago
8 0

Answer:

21.4375

Step-by-step explanation:

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What are the solutions of the equation x4 – 5x2 - 36 = 0? Use factoring to solve.
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Answer:

x = -2i and x = 2i

x = 3 and x = - 3

Step-by-step explanation:

x^4 - 5x^2 - 36 = 0

let u = x^2 and substitute

we have:

u^2 - 5u - 36 = 0

(u - 9)(u + 4) = 0

u = 9 and u = - 4

substitute back for u

x^2 = 9

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x^2 = -4 -- i am going to assume you've learned imaginary numbers; otherwise, you cannot take the square root of a negative number.

x = -2i and x = 2i

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3 years ago
Charlie gathers apples pears and plums. The number of apples and plums are 10 partners, there are the same number of apples and
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Answer:  Yes, there is something missing.


Step-by-step explanation:  Given that Charlie gathers apples pears and plums. The number of apples and plums are 10 partners, there are the same number of apples and pears.

Since there are 10 partners of apples and plums, so

number of apples = number of plums = 10.

Also, number of apples and number of pears are same, therefore, number of pears = 10.

Thus, total number of fruits = 10+10+10 = 30.

Hence, Charlie couls gather 30 fruits.

So, this was missing in the calculation.

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Step-by-step explanation:

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