Step-by-step explanation:
Given formula
an = n² + 4
Now the first four terms of the sequence are
a1 = 1² + 4 = 5
a2 = 2² + 4 = 4 + 4 = 8
a3 = 3² + 4 = 9 + 4 = 13
a4 = 4² + 4 = 16 + 4 = 20
The terms are
5 , 8 , 13 and 20.
Answer:
B.
Step-by-step explanation:
First
Outer
Inner
Last
3x*3x=9x^2
3x*-8=-24x
6*3x=18x
6*-8=-48
9x^2-24x+18x-48
9x^2-6x-48
Answer:
2(multiplicity 2)
Step-by-step explanation:
2 is repeated twice in the function.
Answer:
<DAB = 120
Step-by-step explanation:
7)
<DAB = ?
<DAB + <DCB = 180
so
16x + 8 + 8x + 4 = 180
24x + 12 = 180
24x = 168
x = 7
<DAB = 16(7) + 8 = 120
Answer:
15 beads per bracelet
Step-by-step explanation: