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3 years ago

11

Need help with #1. The answer is 10 but show work please.

2 answers:

Alinara [238K]3 years ago

8 0

Answer: 10

Step-by-step explanation is 1x+1x+1x=3x+6x=9x+1

kati45 [8]3 years ago

5 0

6x+1 is the answer cause x to the third power is 1x+1x+1x=3x+6x=9x+1

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Find a degree 3 polynomial having zeros -5, 1 and 5 and the coefficient of x^3 equal 1

mote1985 [20]

Answer:

$x^3 -x^2 -25x +25$

Step-by-step explanation:

$\text{The roots are,}~ \alpha = -5,~ \beta = 1 ~ \text{and}~ \gamma = 5\\\\\text{The polynomial is,}\\\\~~~x^3 - (\alpha + \beta + \gamma)x^2+(\alpha \beta + \beta \gamma+ \gamma \alpha)x - \alpha\beta \gamma\\\\=x^3 - (-5+1+5)x^2 +(-5 \cdot 1 + 1 \cdot 5 + 5 \cdot -5)x - (-5)(1)(5)\\\\=x^3 -(0+1)x^2 + (-5+5-25)x +25\\\\=x^3 -x^2 -25x +25$

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1 year ago

What is the unit rate for 692.08 ft in 21.1 s? Round to the nearest tenth if necessary. Enter your answer in the box.

Xelga [282]

By unit rate they mean feet per second

To do this you need to divide feet by seconds
692.08/21.1=32.8

The unit rate is:
32.8 feet per second

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