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skad [1K]
3 years ago
14

Find the sum of the series. 12 Σ 2k+14 k=1

Mathematics
1 answer:
san4es73 [151]3 years ago
5 0
What we'll do is plug integer values from 1 to 12 into the expression 2*k+14 like shown below:

if k = 1, then 2*k+14 = 2*1+14 = 16
if k = 2, then 2*k+14 = 2*2+14 = 18
if k = 3, then 2*k+14 = 2*3+14 = 20
if k = 4, then 2*k+14 = 2*4+14 = 22
if k = 5, then 2*k+14 = 2*5+14 = 24
if k = 6, then 2*k+14 = 2*6+14 = 26
if k = 7, then 2*k+14 = 2*7+14 = 28
if k = 8, then 2*k+14 = 2*8+14 = 30
if k = 9, then 2*k+14 = 2*9+14 = 32
if k = 10, then 2*k+14 = 2*10+14 = 34
if k = 11, then 2*k+14 = 2*11+14 = 36
if k = 12, then 2*k+14 = 2*12+14 = 38

Add up the results: 
16+18+20+22+24+26+28+30+32+34+36+38 = 324

The final answer is 324
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B

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3 years ago
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Step-by-step explanation:

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2 years ago
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Step-by-step explanation:

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3 years ago
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A scientist is working with 14 meters of gold wire. How long will the wire be in millimeters?
Tcecarenko [31]
In a meter there are 100 cm.
In 100 cm there are 1000 mm. 

Therefore in 1 meter you have 1000 millimeters. 

Then to find out how many millimeters you have in 14 meters, you just multiply 14 by 1000 to give you 14000 mm.

Final answer= 14 m of gold wire is the equivalent to 14000 mm of wire.
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