3 years ago

What are the possible rational zeros of f(x) = x^4 + 6x^3 − 3x^2 + 17x − 15?

1 answer:

8 0

Hmm, I got these for roots:
0.7937053103356799
0.026855090968934903 +i* 1.6611004538114105
0.026855090968934903 -i* 1.6611004538114105
-6.84741549227355

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A circle has radius 50 cm. Find the area of the circle to the nearest hundredth.

padilas [110]

Multiply by 2 which will get you a diameter and then multiply it by pi which is 3.14.

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3 years ago

Researchers wondered if there was a difference between males and females in regard to some common annoyances. They asked a rando

Zinaida [17]

Answer:

Step-by-step explanation:

Males proportion $p_1 = \frac{163}{532} =0.3064$

Females proportion $p_2 = \frac{203}{589} =0.3447$

$H_0: p_1 = p_2\\H_a: p_1$

(one tailed test for comparison of proportions)

Test statistic = $\frac{p_1-p_2}{p(1-p)\sqrt{\frac{1}{n_1}+\frac{1}{n_2} } }$

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Since p >0.05, accept null hypothesis.

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3 0

3 years ago

A study of king penguins looked for a relationship between how deep the penguins dive to seek food and how long they stay underw

Serggg [28]

Answer:

$b = 0.0138$

Step-by-step explanation:

Given

Regression Equation:

$DD=2.69+0.0138D$

Required

Determine the slope of the regression line

The equation of regression is of the form

$Y = a + bX$

Where b represents the slope;

Compare $Y = a + bX$ to the given equation

$DD=2.69+0.0138D$

We have that:

$Y = DD$

$a = 2.69$

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago