The answer is: [B]: " (x - 6)(x - 8) " .
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Answer:1800
Step-by-step explanation:
Answer:
see explanation
Step-by-step explanation:
Given the sequence
1, 3, 6, 10, 15
(a)
This is the sequence of triangular numbers.
After the first term the pattern is
+ 2, + 3, + 4, + 5, ............
(b)
Using this pattern then
a₆ = a₅ + 6 = 15 + 6 = 21
a₇ = a₆ + 7 = 21 + 7 = 28
a₈ = a₇ + 8 = 28 + 8 = 36
(c)
The n th term formula for triangular numbers is
= n(n + 1)
(d)
Substitute n = 21 into the formula
a₂₁ = × 21 × 22 = 21 × 11 = 231
Answer:
I donot known sorry if i will know i will tell you
The correct answer is 70%.
You can find the answer by using proportion:
x/100=3500/5000 Multiply x times 5000 and 3500 times 100
5000x=350000 Divide in both sides by 5000 to isolated x
x=70%