Answer:
an = 2·2^(n-1)
Step-by-step explanation:
There are simple tests to determine whether a sequence is arithmetic or geometric. The test for an arithmetic sequence is to check to see if the differences between terms are the same. Here the differences are 2, 4, 8, so are not the same.
The test for a geometric sequence is to check to see if the ratios of terms are the same. Here, the ratios are ...
4/2 = 2
8/4 = 2
16/8 = 2
These ratios are all the same (they are "common"), so the sequence is geometric.
The general term of a geometric sequence with first term a1 and common ratio r is ...
an = a1·r^(n-1)
Filling in the values for this sequence, we find the general term to be ...
an = 2·2^(n-1)
Answer:
B or D ( answer = 5 => Two options is one! One of the options should be 5)
Note: The width of a rectangle will never be negative.
Answer:
"The barber braided Eleven's hair." is the sentance in active voice
Step-by-step explanation:
First of all, u r lost because dis is maffs section
active voice sounds more commanding(?)
active: "I threw the rock"
passive: "The rock was thrown by me"
so to change "Eleven's hair is braided by the barber" to active, we need to make the barber first
"The barber braided Eleven's hair." is the sentance in active voice
Answer:
A ≈ 9.0 ft²
Step-by-step explanation:
70° = 7π/18 radians
Area of the arc section
A = ½(7π/18)8² = 12⁴/₉π ft² = 39.09537 ft²
As the triangle is isosceles, the other two angles are (180 - 70) / 2 = 55°
law of sines 8 / sin55 = L / sin 70 L = 9.17722
so the triangle height = √(8² - (9.17722/2)²) = 6.55321
Area of triangle ½(6.55321)(9.17722) = 30.07016
Area = 39.09537 - 30.07016 = 9.025211 ≈ 9.0 ft²
Answer: no way
Step-by-step explanation: you add x plus yyy
