Etch clean graphics uses one cleanser that is 25% acid and a second that is 50% acid. how many liters of each should be mixed in order to get 10l of a solution that is 40% acid? solve by using elimination or substution.

50 ! pls ! 12.  building codes regulate the steepness of stairs. homes must have steps that are at least 13 inches wide for each 8 inches that they rise.

a. discuss how to find the slope of the stairs.
b. describe how changing the width or height affects the steepness of the stairs.

Which speed is the fastest (use 1 mile ≈ 1.6 kilometers)? a. 12 miles/hour b. 18 feet/second c. 19 kilometers/hour d. cannot be determined

Look at attachment. has all info needed. need