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1 answer:
Answer:
1.
336-6=330
330÷6=55
55 Students in each bus
2.
242-11=231
231÷7=33
Each book was 33 dollars
3.
5+30+100=135
The smallest number is 5
4.
18-3=15
15÷8=1.8
Each candy bar was 1.8 dollars
5.
14-9=5
Her allowance is 5 dollars
6.
4+20+60=84
The smallest number is 4
7.
12-7=5
5×2=10
She had 10 in the begining
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Step-by-step explanation:
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Answer:
I do not think I am right but it may be no triangle.
Answer:
or 1
Step-by-step explanation:
÷
=
=
=
= or 1
To put this into an equation, we can make x the amount of two year old's there are.
x+2x+2x=45
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x=9
9 two year old's, 18 three year old's, and 18 four year old's.
Position in the sequence triangular number relation
1 1 1 = 1*(1+1)/2
2 3 3 = 2(2+1)/2
3 6 6 = 3(3+1)/2
4 10 10 = 4(4+1)/2
5 15 15= 5(5+1)/2
Call n the position in the sequence, then the triangular number is: n(n+1)/2