She should go back to her problem solving, determine whether or not a mistake was made, & redo the problem, if necessary.
Circumference = 2
r
r = 12.5
2 *
* 12.5 ~ 78.540
The answer is about 78.540
Answer:
123
Step-by-step explanation:
A+C and E+G will equal 180 separately. Because the lines are parallel we can see that C is equal to G so we can exchange them. Next we have to fill in an equation by using the two equations given which would be 180=9x+15+5x-3 Now solve it
Add alike terms: 180= 14x+12
Subtract 12 to both sides to get operations alone: 168=14x
divide by 14 to get X alone which is 12=x
Now fill in x
9(12)+15= 123
According to the question statement, the total sum of students is 221, which includes the students that ride on bus and the students that ride in a van.
The students that ride in a van are five, the students that ride on bus are 6 times s which is the product of the number of buses and the number of students that are on each bus.
Write all this information into an equation, this way:
Now, solve the equation for s to find the number of students that are on each bus.
There are 36 students on each bus.