7 of them were first graders.
Find how many first graders by using the percentage of total students and number of total students. Multiply them together, and 10% of 70 students is 7 students, which are the first graders.
Ther should be at least 100 people. 70 is under 16 and 21 are teachers and 9 are older then 16 hope this will help
Answer:
Step-by-step explanation:
the answer would be 2985000x
For lines to be perpendicular their slopes have to be negative reciprocals of one another, mathematically...
m1*m2=-1...in this case:
y=5x/3=1/3 so the slope of the lines is 5/3 so any line that has a slope of:
5m/3=-1,
m=-3/5 is perpendicular to the original line...
