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3 years ago

Estimate 543-358 then find the difference

Mathematics

1 answer:

nika2105 [10]3 years ago

4 0

Answer:

185

Step-by-step explanation:

5 4 3

3 5 8

= 185

Seempleee

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Step-by-step explanation:

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2 years ago

Choose any number, add 3. and then multiply by 6.

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Answer:

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Step-by-step explanation:

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3 years ago

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Convert 4 months to fraction form assuming 360-day year

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I converted the four months into a fraction, and got 1/3. There's 12 months in a year, and divided by 4, I got 3.

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21 - 3y = -5

slavikrds [6]

Answer:

A. No

Step-by-step explanation:

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3 years ago

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Express in Simper Fom : y-x

AveGali [126]

Simplify

$E=\dfrac{\frac{x}{y}-\frac{y}{x}}{\frac{1}{y}+\frac{1}{x}}$

Conditions for the existance of $E:$

$x\neq 0~~\text{ and}~~y\neq 0~~\text{ and }~~x\neq -y.$

(otherwise, the one of the denominators would be zero.)
____________________

Simplifying:

$E=\dfrac{\frac{x}{y}-\frac{y}{x}}{\frac{1}{y}+\frac{1}{x}}$

Multiply both the numerator and the denominator by $xy:$

$E=\dfrac{xy\cdot \left(\frac{x}{y}-\frac{y}{x} \right )}{xy\cdot \left(\frac{1}{y}+\frac{1}{x} \right )}\\\\\\ E=\dfrac{\frac{xy\cdot x}{y}-\frac{xy\cdot y}{x}}{\frac{xy}{y}+\frac{xy}{x}}\\\\\\ E=\dfrac{x^{2}-y^{2}}{x+y}\\\\\\ E=\dfrac{(x+y)(x-y)}{x+y}$

Simplify common factors:

$E=x-y\\\\\\ \therefore~~\boxed{\begin{array}{c}\dfrac{\frac{x}{y}-\frac{y}{x}}{\frac{1}{y}+\frac{1}{x}}=x-y \end{array}}$

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3 years ago