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Naily [24]
3 years ago
5

A worker is paid $0.05 on the first day, $0.10 on the second day, $0.20 on the third day, $0.40 on the fourth day, and so on. Ho

w much money (rounded to the nearest cent) in total does the worker earn after working 21 days?
Mathematics
1 answer:
Novay_Z [31]3 years ago
7 0
This is a geometric sequence with a common ratio of 2

an = a1 * r^(n - 1)
n = term to find = 21
a1 = first term = 0.05
r = common ratio = 2
now we sub
a21 = 0.05 * 2^(21 - 1)
a21 = 0.05 * 2^20
a21 = 0.05 * 1048576
a21 = 52428.80 <==== after working 21 days
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3 years ago
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<u>1/3; 2/7; 2/9</u>

Lets find least common multiple

The least common multiple is 63

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2/7 --> 18/63

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7 0
3 years ago
Andy has three planks of wood. Two planks are each 1.5 m long. One plank is 2.5m long. What is the total length of all the three
11Alexandr11 [23.1K]

Given:

Two planks are each 1.5 m long.

One plank is 2.5m long.

To find:

The total length of all the three planks.

Solution:

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First plank = 1.5 m

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One plank is 2.5m long. So,

Third plank = 2.5 m

Now, the total length of all the three planks is

\text{Total length}=\text{First plank + Second plank + Third plank}

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4 0
3 years ago
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cluponka [151]
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5 0
3 years ago
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Answer:

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In formular K.E= 1/2mv^2 where m stands for mass of the body and v is the speed of the body.

3 0
2 years ago
Read 2 more answers
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