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patriot [66]
4 years ago
8

For (d), I don't think I'm supposed to use the graphical method. Is quadratic formula the only option?

Mathematics
1 answer:
Nikolay [14]4 years ago
7 0

I would use the quadratic formula, as no other method comes to mind at the moment.

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Give an example of this when adding two rationalnumbers with different signs and provide the product.
kolezko [41]

ANSWER:

\begin{gathered} \frac{4}{5}+-\frac{8}{3}=-\frac{28}{15} \\ \frac{4}{5}\cdot-\frac{8}{3}=-\frac{32}{15} \end{gathered}

STEP-BY-STEP EXPLANATION:

Rational numbers are all numbers that can be expressed as a fraction, that is, as the quotient of two whole numbers.

Therefore, an example would be:

\begin{gathered} \frac{4}{5}\text{ and - }\frac{8}{3} \\ \text{adding} \\ \frac{4}{5}+-\frac{8}{3}=\frac{4}{5}-\frac{8}{3} \\ \frac{4}{5}-\frac{8}{3}=\frac{4\cdot3-5\cdot8}{5\cdot3}=\frac{12-40}{15}=-\frac{28}{15} \\ \text{ product} \\ \frac{4}{5}\cdot-\frac{8}{3}=-\frac{4\cdot8}{5\cdot3}=-\frac{32}{15} \end{gathered}

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1 year ago
Can the sides of triangle have lengths 4, 10, and 1? yes or no​
Marat540 [252]

Answer:

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8 0
3 years ago
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LiRa [457]

Answer:

Dude I dont understand it I would leave if i knew how

Step-by-step explanation:

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The question is in the screenshot attached. Thank you!
Rzqust [24]

Answer:

Domain: -4 < x < 4

Zeros: (-2, 0), (0, 0) and (2, 0)

The function is positive if: 0 < x < 2

The function is negative if: -4 < x < 0 and 2 < x < 4

Step-by-step explanation:

Domain of the function are those x values where the function is defined, For this case, -4 < x < 4

Zeros of a function are those x values where y = 0, that is, the graph intersect x-axis. For this case, the points are: (-2, 0), (0, 0) and (2, 0)

The function is positive if the graph o the function is above x-axis. For this case, the function is positive at the interval (0, 2)

The function is negative if the graph o the function is below x-axis. For this case, the function is negative at the intervals (-4, 0) and (2, 4)

7 0
3 years ago
Math help please! Will give 20 points!
sweet-ann [11.9K]
At goal post x= 35 
<span>the height will be y= –0.03x2 + 1.6x= 19.25 > 15  </span>
<span>is 4.25 feet above the goal post.</span>
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