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xxMikexx [17]
3 years ago
13

Calculate the area of a circle with a radius of 16.9 centimeters.

Mathematics
1 answer:
Marina CMI [18]3 years ago
5 0

Answer:

I'd say 897.27cm². That's the vlosest answer that I see.

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Evaluate 7i+5-8k when i=0.5 and k=0.25
Natasha2012 [34]

Answer:

10.5

Step-by-step explanation:

i=0.5

k=0.25

7x0.5=3.5

8x0.25=2

3.5+5+2= 10.5

10.5

5 0
3 years ago
Wat is the meaning of fraction
Simora [160]

Published on Apr 13, 2015. Video shows what fraction means. A part of a whole, especially a comparatively small part.. A ratio of two numbers, the numerator and the denominator, usually written one above the other and separated by a horizontal bar.

5 0
3 years ago
Verify sin^4x-sin^2x=cos^4x-cos^2x is an identity. Please dumb it down, i don't get this lesson.
Grace [21]

Answer:

Step-by-step explanation:

cos^2+sin^2 = 1  ( rule)

cos^4x-cos^2x      simplify

- cos^2( -cos^2 +1  )     -cos^2 common

or  -cos^2 ( 1-cos^2)    

since cos^2 + sin^2 = 1

substitute : -cos^2 ( sin^2 )

substitute  :  -(1-sin^2 ) ( sin^2)

multiply : -sin^2 + sin^4 or sin^4 - sin^2

it is verified that sin^4 -sin^2= cos^4-cos^2

hope it helps  

6 0
3 years ago
Edward deposited $6,000 into a savings account 4 years ago. The simple interest rate is 3%. How much money did Edward earn in in
GaryK [48]
Hello IdontKnowHowToMath,

first, converting R percent to r a decimal
r = R/100 = 3%/100 = 0.03 per year.

Solving our equation:
A = 6000(1 + (0.03 × 4)) = 6720
A = $6,720.00

The total amount accrued, principal plus interest, from simple interest on a principal of $6,000.00 at a rate of 3% per year for 4 years is $6,720.00.
6 0
3 years ago
PLZ HELP ASAP!!! Write 5^-3 in standard form
Stells [14]

Answer:

0.005

this is because 5 has to be pushed back 3 times

5 0
4 years ago
Read 2 more answers
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