2 years ago

john runs 2/5 miles in 1/20 of an hour. if he runs at a constant rate, what is his speed, in miles per hour?

Mathematics

1 answer:

Bezzdna [24]2 years ago

4 0

Answer:

exactly 8 mph have a good one and stay safe

Step-by-step explanation:

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3 years ago

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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:

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 30% acid solution was mixed with a 10% acid solution. The result was 600g of a 15% solution. How much of each solution was use

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3 years ago

Another way to write 300 + 70 + 5/10 + 8/100

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Step-by-step explanation:

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3 years ago

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