3 years ago

What would the circumference of a circle if the radius was 3 inches

Mathematics

1 answer:

monitta3 years ago

4 0

Answer:

9.424 inches

Step-by-step explanation:

Multiply 3 by Pi which is like 3.1415926535897932348...

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Tyler took a total of 16 quizzes over the course of four weeks. How many weeks of school will Tyler have to attend this quarter

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Answer:

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Step-by-step explanation:

16/4=4

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3 years ago

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What are all of the real roots of the following polynomial? f(x) x^4-24x^2-25

Greeley [361]

<u>Answer:</u>

x = ±5

<u>Step-by-step explanation:</u>

We are given the following polynomial function and we are to find all of its real roots:

$x^4-24x^2-25$

Let $y=x^2$ so we can now write it as:

$y^2-24y-25$

Factorizing it to get:

$(y^2+y)+(-25y-25)$

$y\left(y+1\right)-25\left(y+1\right)$

$\left ( y + 1 \right ) \left ( y - 2 5 \right)$

Substitute back $y=x^2$ to get:

$\left ( x^2 + 1 \right ) \left ( x^2 - 25 \right )$

$\left ( x^2 + 1 \right ) \left ( x + 5 \right ) \left ( x - 5 \right )$

The quadratic factor has only complex roots. Therefore, the real roots are x = ±5.

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3 years ago

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If g(x) = x - 3 and f(x) = 3 - x2; find f(g(-2))=

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Answer:

Step-by-step explanation:

g(-2) = -2 -3 = -5

f(-5)= 3 - (-5)^2 = 3 - 25 = -22

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