A scientist studied the migration patterns of two types of whales. • The humpback whale traveled 2,000 miles in 25 days.
• The gray whale traveled 2,250 miles in 30 days.

Assuming the humpback whale travels the same distance each day, what is the unit rate for the humpback whale in miles per day?

there is no grid

step-by-step explanation:

irrational, cannot

answer is  

a.

p = 78

step-by-step explanation:

a

step-by-step explanation:

given the 2 equations

- x + y = - 2 → (1)

2x - 3y = 4 → (2)

multiplying (1) by 2 and adding to (2) will eliminate the x- term

- 2x + 2y = - 4 → (3)

add (2) and (3) term by term

(2x - 2x) + (- 3y + 2y) = (4 - 4), simplifying gives

- y = 0 ⇒ y = 0

substitute y = 0 in either of the 2 equations for corresponding value of x

substituting in (2) gives

2x = 4 ( divide both sides by 2 )

x = 2

solution is (2, 0 ) → a