Answer:
4
Step-by-step explanation:
I got 47 because...
Tn = Tn-1 + 3×2^(n -1)
Using the above formula,
T2 = 2 + 3×2^(1-1) = 2 + 3×2^0 = 2 + 3 = 5
T3 = 5+ 3×2^(2-1) = 5 + 6 = 11
T4 = 11 + 3×2^(3-1) = 11 + 12 = 23
T5 = 23 + 3×2^(4-1) = 23 + 24 = 47
Answer:
69 students were advanced and 184 were regular
Step-by-step explanation:
begining
advance 3: regular 8
after exam
advance 4 (92students) : regular 7 (92/4=23; 23*7=161 students)
So total students we have 161+92=253,
remember we have advance 3: regular 8 so
253/(3+8)=253/11=23
23*3=69, 23*8=184
Answer:
a)2r + n2 - 2n +7
Step-by-step explanation:
3r + n2 - r + 5 - 2n + 2
(3r - r) + n^2 - 2n + (2 + 5)
2r + n^2 - 2n + 7
Answer:
1250000/10
Step-by-step explanation:
hope it helped