Answer:
Round Square is an international network of about 200 schools.
Step-by-step explanation:
Answer:
There are 633.177245 miles in 1019 km.
Step 1: Find out how many cm3 is filled in a minute.
750000/30 = 25000cm3 per minute
Step 2: Find out how many minutes it takes to fill 1200000cm3.
1200000/25000 = 48 minutes
Answer: 48 minutes
Answer:
Desiree answered 40 questions correctly
Step-by-step explanation:
Let
x = number of questions answered correctly
y = number of questions unanswered
z = number of wrong answers unanswered
The system of equations can be expressed
x + y + z = 50
3*x - 0.5*y -1*z = 110
Desiree did not leave any question unanswered
This means that the equations become
y = 0
x + z = 50
3*x -z = 110
If we add them together, we get
4x = 160
x = 40
z = 10
She answered 40 questions correctly
