Find the 7th term of the geometric sequence –4, 12, –36, 108, –324,...

Mathematics

1 answer:

maks197457 [2]3 years ago

5 0

Answer:

Step-by-step explanation:

a=-4 r=12/-4=-3

T7= ar^n-1

= (-4)(-3)^7-1

=-2916

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Let M={-2,-1,0,2,} in universe U={-3,-2,-1,0,1,2,3,4} Which wet is the complement of set M?

FromTheMoon [43]

Answer:

Step-by-step explanation:

U = {-3, -2, -1, 0, 1, 2, 3,4}

M= {-2, -1, 0 , 2}

M' = {-3, 1, 3, 4}

Complement of M refers to elements not in M and in U

6 0

3 years ago

Find the 40th term of this arithmetic sequence.

Allisa [31]

199 is the answer because the equation you use is an=a1+d(n-1). Where an (the n is actually supposed to be smaller than the a) is the nth term (a40), a1 (1 smaller than a) is the first term (4), d is the difference (5), and n is the number of the term you're looking for (40)

5 0

3 years ago

se quiere pintar una pared en forma de hexágono regular y se sabe que cada lado mide 3m y que su apotema es de 2,8m cual es el a

qwelly [4]

Answer:

El área total a pintar será:

$A_{tot}=25.2\: m^{2}$

Step-by-step explanation:

Sabiendo el apotema y la longitu de los lados, podemos encontrar el área de un triangulo. Recordemos que, si trazamos rectas del centro del hexágono a los vértices, se formaran 6 triángulos equiláteros.

El área de un triángulo es:

$A_{t1}=\frac{b*a}{2}$