Answer:
Sixth graders: 14
Seventh graders: 28
Eighth graders: 28
Step-by-step explanation:
To solve this you just have to use a rule of three to solve the percentages, remember that the 100% will be the 70 students, and we solve each case separetly:
70 students= 100%
sixth grades= 40%
Sixth grades= (40*70)/100
Sixth graders= 28
70 students= 100%
seventh grades= 20%
seventh graders= (20*70)/100
Seventh graders=14
So if we have that the rest of the students are eighth graders, we just add up the sixth and seventh graders and withdraw them from the total:
28+14=42
70-42=28
SOwe have that the eighth graders are 28
Answer:
0
Step-by-step explanation:
4 + 0 = 0
So basically, for this you would be combining like-terms and simplifying. This will give you -3a^8+65a^5
T 1 2 3 4
B 3 6 9 12
This is linear relationships B=3*T (it can be also called directly proportional)
