If x + 1 by x is to 7of x + 1 by x

found 2 answers..hope this helps!

Step-by-step explanation:

X²+1/x²=7

LCM of 1 of x²=x²

x²(x²)+1/x²=7

x⁴+1=7x²

x(x³)+1=7x²

x³=7x²-1/x

According to the question

x³+1/x³

7x²-1/x+1/7x²-1/x

7x²-1/x+ x/7x²-1

LCM of x and 7x²-1

7x²-1(7x²-1)+x(x)/x(7x²-1)

49x⁴-7x²-7x²+1+x²/7x³-x

49x⁴-12x²+1/7x³-x

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m