What number would you need to multiply the 3 by in the equivalent ratios below? 4/3 = 8/?
1 answer:
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Answer:
f(x) = + 2x³ - 4x² - 6x + 3
Step-by-step explanation:
Note that radical zeros occur in conjugate pairs, thus
- 1 + is a zero then - 1 -
is also a zero
is a zero then -
is also a zero
Thus the corresponding factors are
(x - (- 1 + ) ), (x - (- 1 -
) ), (x -
), (x - (-
)), that is
(x + 1 - ), (x + 1 +
), (x -
), (x +
)
The polynomial is then the product of the roots
f(x) = (x + 1 - )(x + 1 +
)(x -
)(x +
)
= ((x + 1)² - ()²)((x² - (
)²)
= (x² + 2x + 1 - 2)(x² - 3)
= (x² + 2x - 1)(x² - 3) ← distribute
= - 3x² + 2x³ - 6x - x² + 3
= + 2x³ - 4x² - 6x + 3
Answer:
4.7 miles
Step-by-step explanation:
10, 000 steps (stride) * 30 inches per stride = 300,000 inches per day.
To know miles, we need the miles-to-inches conversion, which is:
1 miles = 63,360 inches
To find number of miles walked in a day, we would need to divide total (300,000) by 63,360 :
So, that 4.73 miles a day
Rounded to nearest tenth, 4.7 miles per day