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3 years ago

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Veronica is saving money to buy a saddle for her horse thay costs $175. She plans to save $10 the first month she saves $5 each

month after the first month. How many months will it take her to save 175

1 answer:

shusha [124]3 years ago

3 0

7 months. 10+15+20+25+30+35+40=175.

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Step-by-step explanation:

You might remember this long, seemingly very hairy thing called the <em>quadratic formula</em> from earlier in algebra:

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The <em>discriminant</em> of a quadratic equation of the form $ax^2+bx+c=0$ is that bit under the square root: $b^2-4ac$ . What does the discriminant tell us? Since we're taking its square root, we know that $\sqrt{b^2-4ac}$ is only real for non-negative values of $b^2-4ac$ . If $b^2-4ac > 0$ , we have two real roots, one for $\sqrt{b^2-4ac}$ and one for $-\sqrt{b^2-4ac}$ . If $b^2-4ac = 0$ , the function has a rational root, since the formula becomes

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