Answer:
2+5=7
Step-by-step explanation:
eg.1 box has 15 pencils which means cindy have 30 pencils and patrice have 75
Is this question complete?
Answer:
Step-by-step explanation:
Each side of the square is s meters long.
By the Pythagorean Theorem,
length of diagonal = √(s²+s²) = √(2s²) = s√2 meters
s√2 = 11.3
s = 11.3/√2
perimeter = 4s = 45.2/√2 ≅ 31.96 meters
Answer:
6.1 gallons of 100% antifreeze and 48.9 gallons of 10% antifreeze
Step-by-step explanation:
Let the amount of 100% antifreeze be x gallon
let the amount of 10% antifreeze be y gallon
total amount to drum = 55 gallons
therefore x + y = 55 -------------------------------Eqn 1
100%(x) + 10(y) = 20%(55)
x + 0.1y = 11--------------------------------------Eqn 2
Both equations are solved simultaneously
From eqn 1 x = 55-y
Substitute x = 55-y into eqn 2
55-y+0.1y = 11
collecting like terms
44 = 0.9y
y = 48.88889
x = 55- 48.88889 = 6.11111 gallons
Therefore 6.1 gallons of 100% antifreeze and 48.9 gallons of 10% antifreeze
