Let A be the amount of 100% acid.
100A+20*(6)=40*(A+6)
100A+120=40A+240
60A=120
A=2 gallons
Answer:
Height of the recycling box = 75 cm
Explanation:
Volume of a box = Base area of box x Height of box
Volume of the box = 151875 cm³
Base has a square base of side 45 cm
Base area = 45 x 45 = 2025 cm²
151875 = 2025 x Height of box
Height of box = 151875/2025
= 75 cm
Height of the recycling box = 75 cm
ANSWER:84.823 sq.cm (approx.)
Area of shaded region,
=Area of whole circle-Area of the quadrant AOB which is cut out.
=π*6*6-(π*6*6)/4 sq.cm
=36π-9π sq.cm
=27π sq.cm
=84.823 sq cm(approx.)
Answer:
original number is 57
Step-by-step explanation:
I am not sure if there is a correct way to do this...but I am just guessing and checking to find the answer.
the possible 2 digit numbers that equal 12 are :
39,93,48,84,57,75,66
the number obtained by interchanging the digits exceeds the original number by 18....so the original number is 18 less then the new number.
the only two numbers whos difference is 18 is 57 and 75.....75 - 57 = 18
so the original number is 57.....and the new number obtained by interchanging the digits (75) exceeds the original number by 18...and 75 - 57 = 18.