Is 9x^2-30x+25 a perfect square trinomial

9x²-30x+25=(3x-5)²

Step-by-step explanation:

This is a perfect square trinomial.

In general (a±b)² = a²± 2ab +b²

Notice that both 9x² = (3)² and 25 = 5² are perfect squares, so the only question is whether the middle term matches when you square (3x-5), the minus sign being chosen to at result in a negative coefficient for the middle term .

(3x-5)² = (3x)² - 2(3x)(5) +5² = 9x² - 30x + 25

I hope this helps you

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles

its adding 5.5 each time

step-by-step explanation: