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GenaCL600 [577]

2 years ago

15

In a volcano, erupting lava flows continuously through a tube system about 11 kilometers to the sea. Assume a lava flow speed o

f 0.5 kilometer per hour and calculate how long it takes to reach the sea.

1 answer:

Vlada [557]2 years ago

7 0

Answer:

22 hours

Step-by-step explanation:

0.5 km in 1 hr

1 km in 2 hr

11 km in 22 hr

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Step-by-step explanation:

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3 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

777dan777 [17]

Answer: (C) 13,120

<u>Step-by-step explanation:</u>

Given the sequence {4, 12, 36, 108, ... , 8748} we know that the first term (a) is 4 and the ratio (r) is $\dfrac{12}{4}=3$

Input the values above into the Sum formula:

$S_n=\dfrac{a(1-r^n)}{1-r}\\\\S_8=\dfrac{4(1-3^8)}{1-3}\\\\.\quad=\dfrac{4(1-6561)}{-2}\\\\.\quad=\dfrac{4(-6560)}{-2}\\\\.\quad=-2(-6560)\\\\.\quad=13,120$

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2 years ago

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gogolik [260]

Answer:

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7 0

2 years ago

The problem is in the picture.

Semmy [17]

Answer:

an = 5 + 10(n -1)
a7 = 65

Step-by-step explanation:

The explicit formula for the n-th term of an arithmetic sequence is ...

an = a1 + d(n -1)

where a1 is the first term and d is the common difference.

The sequence of seat counts has a1=5 and d=10, so the explicit formula is ...

an = 5 +10(n -1)

___

The 7th term is ...

a7 = 5 +10(7 -1) = 65

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3 years ago

WHAT IS 1+1 <br><br><br> If u get it right tell me;) good luck

ella [17]

Answer:

4

Step-by-step explanation:

;)

4 0

2 years ago

Read 2 more answers