Suppose that a 1 , a 2 , a 3 , … is an arithmetic sequence with common difference d . Show that 10 a 1 , 10 a 2 , 10 a 3 , 10 a 4 , … is a geometric sequence and find the common ratio r .
Suppose that a 1 , a 2 , a 3 , … is an arithmetic sequence with common difference d . Show that 10 a 1 , 10 a 2 , 10 a 3 , 10 a 4 , … is a geometric sequence and find the common ratio r .
Solution Summary: The author calculates the common ratio of the sequence 10d and determines whether it is geometric or not.
Suppose that
a
1
,
a
2
,
a
3
,
…
is an arithmetic sequence with common difference d. Show that
10
a
1
,
10
a
2
,
10
a
3
,
10
a
4
,
…
is a geometric sequence and find the common ratio r.
I want to learn this topic l dont know anything about it
Solve the linear system of equations attached using Gaussian elimination (not Gauss-Jordan) and back subsitution.
Remember that:
A matrix is in row echelon form if
Any row that consists only of zeros is at the bottom of the matrix.
The first non-zero entry in each other row is 1. This entry is called aleading 1.
The leading 1 of each row, after the first row, lies to the right of the leading 1 of the previous row.
PRIMERA EVALUACIÓN SUMATIVA
10. Determina la medida de los ángulos in-
teriores coloreados en cada poligono.
⚫ Octágono regular
A
11. Calcula es número de lados qu
poligono regular, si la medida
quiera de sus ángulos internos
• a=156°
A= (-2x+80
2
156 180-
360
0 = 24-360
360=24°
• a = 162°
1620-180-360
6=18-360
360=19
2=360=
18
12. Calcula las medida
ternos del cuadrilá
B
X+5
x+10
A
X+X+
Sx+6
5x=3
x=30
0
лаб
• Cuadrilátero
120°
110°
• α = 166° 40'
200=180-360
0 =
26-360
360=20
ひ=360
20
18 J
60°
⚫a=169° 42' 51.43"
169.4143180-340
0 = 10.29 54-360
360 10.2857
2=360
10.2857
@Sa
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