Answer:
EY = 5.3 cm
Step-by-step explanation:
∵ Δ ABC similar to ΔDEF
∴ AB/DE = BX/Ey
∵ AB = 12 cm
∵ DE = 8 cm
∵ BX = 8 cm
∴ 12/8 = 8/EY
∴ 12EY = 8 × 8 ⇒ 12AY = 64
∴ EY = 64 ÷ 12 = 5.3333 ≅ 5.3 cm
Answer: option D) An = 3an - 9a
Justification:
1) That is an arithmetic sequence which you prove by determining the difference between two consecutive terms (which shall be constant if it indeed is an arithmetic sequence):
2)
Second term - first term = -3a - (-6a) = -3a + 6a = 3a
Third term - second term = 0a - (-3a) = 3a
Fourth term - third term = 3a - 0a = 3a
Fith term - fourth term = 6a - 3a = 3a
Therefore, it is an arithmetic sequence with difference d = 3a.
3) the general rule for the nth term of an arithmetic sequence is given by the formula:
An = Ao + d (n - 1)
Where Ao = -6a and d, as determined above, is 3a
=> An = -6a + 3a (n - 1)
Expand the parenthesis (distributive property) =>
An = -6a + 3an - 3a = -9a + 3an = 3an - 9a = option D. <------- answer.
Answer:
15
Step-by-step explanation:
Answer:
the answer rounded to the nearest hundred is 0.86
Step-by-step explanation:
the full answer is 0.859375
Answer:
What's the problem
Step-by-step explanation:
20 characters
