2 years ago

Help fast plzzzzzzz :3

Mathematics

1 answer:

Otrada [13]2 years ago

8 0

Answer:

D i believe

Step-by-step explanation:

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Enter the finite geometric series from its given description, and then enter its sum.

Mama L [17]

Answer:

$a_n= 4(-5)^{(n-1)}$

-10416

Step-by-step explanation:

a = 4

r = -5

geometric series: $a_n=ar^{(n-1)} = 4(-5)^{(n-1)}$

Determine which term = -12500:

$a_n=-12500$

$4(-5)^{(n-1)}=-12500$

$(-5)^{(n-1)} = -3125$

$(5)^{(n-1)} = 3125$

$(n-1)ln(5) = ln(3125)$

$n-1 = ln(3125)/ln(5) = 5$

$n = 5 + 1 = 6$

$a_6=-12500$

Using geometric sum series formula: $S_n=\frac{a(1-r^n)}{1-r}$

Therefore, $S_6=\frac{4(1-(-5)^6)}{1-(-5)} =\frac{-62496}{6} =-10416$

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2 years ago

a stainless steel garbage can is in the shape of a right circular cylinder. If its radius is 6 inches and its volume is 864 pi c

lubasha [3.4K]

$\bf \textit{volume of a cylinder}=v=\pi r^2 h\qquad 
\begin{cases}
r=radius\\
h=height\\
---------\\
r=6\\
v=864\pi^3
\end{cases}
\\\\\\
864\pi^3=\pi\cdot 6^2\cdot h\impliedby \textit{solve for "h"}$

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2 years ago

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What is y=5x+3 when the x variable is 1

ikadub [295]

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3 years ago

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Plzzz helpp find the length of arc AD. use 3.14 for pi. round to the nearest tenth

solniwko [45]

Answer:

15.7 cm

Step-by-step explanation:

Angle AD = 180°- 66.4°= 113.6° (considering 2x90°=180° on opposite side)

P= 2*3.14*7.9=49.6 cm

Arc AD= 49.6*113.6°/360°= 15.7 cm

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3 years ago

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alukav5142 [94]

The answers are:
1. B
2.C

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3 years ago