The answer is b = 50.
The general form of quadratic equation is
ax² + bx + c = 0.
To write the equation 0.3x²<span> + 5x - 7 = 0 in standard form, you must get rid of decimals. To do that, multiply the equation by 10:
</span>10 * (0.3x²<span> + 5x - 7) = 10 * 0
</span>10 * 0.3x² + 10 * 5x - 10 * 7 = 0
3x² + 50x - 70 = 0
Now compare this equation with the general formula:
ax² + bx + c = 0
3x² + 50x - 70 = 0
Therefore, b = 50.
To identify equivalent fractions we must check them by performing the operation (division) or cross products, if the result is the same they are equivalent fractions.
<h3>What are equivalent fractions?</h3>
Equivalent fractions are a mathematical term to refer to those fractions that represent the same quantity even though the numerator and denominator are different.
<h3>How do we know if two fractions are equivalent?</h3>
Two fractions are equivalent if the products of the numerator of one and the denominator of the other are equal, that is, cross products.
Let's see an example:
Let us check if
and
are equivalent.
To do this, we multiply the numerator of one of the fractions by the denominator of the other, as shown below:
Since the result is the same, we can say that the fractions are equivalent.
Note: This question is incomplete because there is some information missing. However I can answer it based on my general prior knowledge.
Learn more about fractions in: brainly.com/question/10354322
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Answer:
j
Step-by-step explanation:
Answer:
I think it might be B. but I am not so sure.