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Mariana [72]
3 years ago
7

5. Multiple Choice What are all the rational

Mathematics
1 answer:
lutik1710 [3]3 years ago
4 0

Answer:

The answers are not correct

Step-by-step explanation:

For finding the rational zeros of this function, we need to resolve this equation:

-x^{2} -17x-157 = 0\\  

multiplying by -1 on both sides

x^{2} + 17x + 157 = 0

And now we can use the general solution of a cuadratic equation:

x = \frac{-b+\sqrt{b^{2}-4ac } }{2a}

Where

a = 1

b = 17

c = 157

This equation does not have real solutions

Maybe you could verify if the function is written correctly

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A portable music player has 2 gigabytes of storage and can hold about 500 songs. A similar but larger media player has 80 gigaby
anyanavicka [17]

Answer:

20,000.

Step-by-step explanation:

The first music player has 500 songs stored by 2 GB. So 500/2 is 250. You take 250 and you multiply it by 80 and you get 20,000.

5 0
4 years ago
Suppose ACT Reading scores are normally distributed with a mean of 21.4 21.4 and a standard deviation of 5.9 5.9 . A university
Nutka1998 [239]

Answer:

29.2

Step-by-step explanation:

Mean = 21.4

Standard deviation = 5.9%

The minimum score required for the scholarship which is the scores of the top 9% is calculated using the Z - Score Formula.

The Z- score formula is given as:

z = x - μ /σ

Z score ( z) is determined by checking the z score percentile of the normal distribution

In the question we are told that it is the students who scores are in the top 9%

The top 9% is determined by finding the z score of the 91st percentile on the normal distribution

z score of the 91st percentile = 1.341

Using the formula

z = x - μ /σ

Where

z = z score of the 91st percentile = 1.341

μ = mean = 21.4

σ = Standard deviation = 5.9

1.341= x - 21.4 / 5.9

Cross multiply

1.341 × 5.9 = x - 21.4

7.7526 = x -21.4

x = 7.7526 + 21.4

x = 29.1526

The 91st percentile is at the score of 29.1526.

We were asked in the question to round up to the nearest tenth.

Approximately, = 29.2

Step-by-step explanation:

7 0
3 years ago
Carson wants to construct a triangle with side lengths of 4 inches, 7 inches, and 12 inches. Which best describes a triangle wit
andrey2020 [161]

Answer: 2

Step-by-step explanation: Of course you probably never learned this

3 0
4 years ago
Find the distance between the points (-7, 5) and (4, 1).
Alla [95]
2 because the square root is 12 and the distance is 12 units
8 0
3 years ago
Read 2 more answers
Naomi’s class is having an election. The ballot box in her classroom is in the shape of a cube with a side length of 8 inches. G
rjkz [21]

Answer:

152 cubic inches

Step-by-step explanation:

6 0
4 years ago
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