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3 years ago

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what is the rule for solving proportions? A. The sum of the means is the product of the extremes. B. The product of the means is

equal to the product of the extremes. C. The product of the extremes is twice the product of the means.

1 answer:

Zanzabum3 years ago

8 0

The rule is that :
B. The product of the means is equal to the product of the extremes

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The steps to derive the quadratic formula are shown below:

prohojiy [21]

Answer:

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Step-by-step explanation:

<h3>Step 3:</h3>

$\displaystyle x^2+\frac{bx}{a} =\frac{-c}{a}$ --------------------(1)

<h3>The next step will be:</h3>

to find the b² for the expression on the left.

<h3>How to find b²:</h3>

Take the expression

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<u>We can also write it as:</u>

$\displaystyle (x)^2 + 2(x)(\frac{b}{2a} )$

According to the formula $a^2+2ab+b^2$ , the b of this expression is $\displaystyle \frac{b}{2a}$ . So,

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So, we will add $\displaystyle \frac{b^2}{4a^2}$ to both sides in Eq. (1)

For STEP 4, the equation will become:

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1 year ago

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Answer:

Step-by-step explanation:

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Answer:

Step-by-step explanation:

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X copies = 60 seconds

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Theefore:

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divide through by 345

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