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3 years ago

Select the explicit formula for the sequence that correspond to this geometric series: 6 + 18 + 54 + 162 + 486

Mathematics

2 answers:

r-ruslan [8.4K]3 years ago

5 0

Answer: ak=6•3k-1

Step-by-step explanation:

timama [110]3 years ago

3 0

Answer:

1) A

2) B

3) 726

Step-by-step explanation:

just did this :))

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Find the value of x. Then find the missing angle measures of the polygon

UkoKoshka [18]

Answer:

x=10

5x=50

2x=20

Step-by-step explanation:

110+5x+2x = 180 combine like terms and move the constants to the same side

7x=70

x = 10

5(10) = 50

2(10) = 20

4 0

3 years ago

The circumference of a circle is 22 cm.

valkas [14]

$\bf \: Circumference \: of \: a \: circle = 2\pi \: r$

$\implies22 = 2 \times \dfrac{22}{7} r$

$\implies22 = \dfrac{44}{7} \times r$

$\implies \: r = \dfrac{22 \times 7}{44}$

$\implies \boxed{ r = \dfrac{7}{2} }$

Now,

$\bf \: Area \: of \: circle = \pi {r}^{2}$

$\rightarrow \: \frac{22}{7} \times ({ \frac{7}{2}) }^{2}$

$\rightarrow \frac{22}{ \cancel7} \times \frac{ \cancel{49}}{4}$

$\rightarrow \: 22 \times \frac{7}{4}$

$\rightarrow \: 11 \times \frac{7}{2}$

$\rightarrow \frac{77}{2}$

$\rightarrow \: 38.5 \: cm {}^{2}$

Area of rectangle = 38.5 cm².

7 0

3 years ago

The ratio of 600m to 3km in simplest form

never [62]

3 km = 3000m
600m:3000m divide by 10
60:300 divide by 10
6:30 divide by 3
2:10 divide 2
*1:5* (simplest form)

6 0

4 years ago

PLEASE BE QUICK!

Svetach [21]

The answer is 0.73 hope it helps

3 0

3 years ago

What does this mean? I don’t understand.

Nutka1998 [239]

ninety four means $94. 36/100 means $0.36. when you put these together you get $94.36

5 0

3 years ago