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vodka [1.7K]
2 years ago
10

What is the discriminant of the quadratic equation -x^2-x-8=0?

Mathematics
1 answer:
Nat2105 [25]2 years ago
8 0

Answer:

-31

Step-by-step explanation:

See Image Below

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A circle has an area of 153.86 units2 and a circumference of 43.96 units. If the radius is 7 units, what can be said about the r
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Step-by-step explanation:

\text{Circumference:}\\\\C=2\pi r\\\\\text{Area:}\\\\A=\pi r^2\\\\\dfrac{A}{C}=\dfrac{\pi r^2}{2\pi r}\qquad\text{cancel}\ \pi\ \text{and}\ r\\\\\dfrac{A}{C}=\dfrac{r}{2}\\\\\bold{The\ number\ of\ areas\ of\ a\ circle\ is}\ \dfrac{r}{2}\ \bold{larger\ than\ its\ circumference}.

\text{For a given area and circumference}:\\\\A=153.86,\ C=43.96,\ r=7\\\\\dfrac{A}{C}=\dfrac{153.86}{43.96}=3.5=\dfrac{7}{2}=\dfrac{r}{2}\\\\\dfrac{A}{C}=\dfrac{r}{2}

4 0
3 years ago
What is the value of log, 81?<br> N<br> け間<br> w<br> оооо<br> ол
kramer

Answer:

1.908

Step-by-step explanation:

Assuming you are going at a base of 10,

㏒81 = 1.908, just use a calculator

7 0
3 years ago
A storm moves at a rate of 8 miles per hour. It is 200 miles away from Freeport and headed directly for this town. The equation
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Pls see answer below.

Step-by-step explanation:

In this case, our slope is -8. This means that every hour, the storm is getting closer to the town by 8 miles per hour.

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Please help I will give you 20 points
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You good ?????????????
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