1*2*0.2 = 0.4
Pipe drains 0.4m3 in 30min
Volume of tank = 0.5 * (1.4 + 0.6) * 2 * 1 = 2m3
Time taken = 2/0.4 * 30 = 150min
Answer:
a + c = 150
7.75a + 10.25b = 1470
Step-by-step explanation:
Let a represent the number of adult tickets that were sold.
Let c represent the number of child tickets that were sold.
The celluloid cinema sold 150 tickets to a movie. Some of these were child tickets and the rest were adult tickets. This means that
a + c = 150 - - - - - - - - - - - - - -1
A child ticket cost $7.75 and an adult ticket cost $10.25. If the cinema sold $1470 worth of tickets, it means that
7.75a + 10.25b = 1470 - - - - - - - - -2
Answer:
Maggie is 11 years old
Step-by-step explanation:
let m be Maggie and b be her brother.
substitute for b.
add 6 to both sides
divide by 5 on both sides
double check by finding the brother's age by substituting for m
Answer:
33 people
Step-by-step explanation:
7x = 4x + 9
3x=9
x=3
7(3) = 21
4(3) = 12
33 people
To negate a sentence
negate each term separately
then ~ ~C becomes C
and. ~d. Becomes ~d
the function Ʌ doesnt change
so the result is C Ʌ ~ d
