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2 years ago

13

It takes Kendra 27 minutes to run 3 miles. A)write a ratio to represent kendras running rate in minute per mile b) write kendras

running rate in miles per minute C)how many miles can Kendra run in 45 minutes d)how many minutes would it take Kendra to run 7 miles

1 answer:

Alex Ar [27]2 years ago

7 0

Answer:

A is 9:1 B is 1:9 C is 5 miles D is 63 minutes

Step-by-step explanation:

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If a,b,c,d, and e are non negative such that x^6-289x^4-x^2+289=(x-a)(x+b)(x_c)(x+d)(x^2+ex+1), what is the value of a+b+c+d+e?

Irina18 [472]

Answer:

36

Step-by-step explanation:

Hello,

If $X=x^2$ it becomes

$X^3-289X^2-X+289=(X^2-1)(X-289)$

and $289=17^2$

$X^2-1=(X-1)(X+1)=(x^2-1)(x^2+1)=(x+1)(x-1)(x^2+1) \\\\x^2-289=x^2-17^2=(x-17)(x+17)$

So,

$x^6-289x^4-x^2+289=(x^2-1)(x^2+1)(x^2-289)=(x-1)(x+1)(x+17)(x-17)(x^2+1)$

a = 1

b = 1

c = 17

d = 17

e = 0

Then a + b + c + d + e = 36

Thanks

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2 years ago

A teacher would like to estimate the mean number of steps students take during the school day. To do so, she selects a random sa

Helga [31]

Answer:

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Step-by-step explanation:

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The circle passes through the point (−2, 3) with a center of (-4,6). What is its radius?

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Answer:

<u>radius = √13</u>

Step-by-step explanation:

Forming the equation :

<u>(x - h)² + (y - k)² = r²</u>

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