Answer:
Step-by-step explanation:

First, it would be helpful to find out how many teachers there are at the school.
2470 students x (1 teacher/26 students)=95 teachers
To find the number of teachers needed, just use the ideal ratio:
2470 students x (1 teacher/19 students)=130 teachers
So to reduce this ratio to 19:1, the school needs 130 teachers. To know how many new teachers the school needs, just subtract the ideal from the current amount.
130-95=35 new teachers needed
1/52 because there is only one 7 of hearts in the 52 cards.
157 is equal to half of the circumference...
C=2πr so C/2 is:
πr=157
r=157/π ft
r≈50 ft
Answer:
0.125
Step-by-step explanation: