A plane can fly 1440 miles in the same time as it takes a car to go 400 miles. If the car travels 130 mph slower than the plane, find the speed of the plane.
mph
PLEASE PLEASE HELP

The speed will be "144 mph".

Step-by-step explanation:

Let the speed of the plane be "x mph".

then,

The car's speed be "x-130 mph".

According to the question,

⇒

By applying cross-multiplication, we get

⇒    

⇒

⇒    

⇒                

⇒                      

⇒                          

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

answer: i believe the answer is e

step-by-step explanation: