Write the given trinomial if possible as a square of a binomial or as an expression opposite to a square of a binomial: 4/9 b^2+0.4bc+0.09c^2

the answers are in the images, i received 100% on this assignment. hope this !

step-by-step explanation:

1

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.