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yulyashka [42]
3 years ago
5

The radius of a circle is 5 inches what ia the area

Mathematics
2 answers:
eduard3 years ago
6 0

Answer:

Area = PI * radius ^2

Area = PI * 5 * 5

Area = 78.5398163397 square inches



Step-by-step explanation:


Crank3 years ago
4 0

Answer:

A = pi * r^2 = pi * 5^2 = 25*pi = 78.54 in²

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Find all the solutions of sin x + cos x = 1 in the interval [0, 2pie).
Mashcka [7]

Answer:

X = 0,  π/2 in the interval  [0, 2pi).

Step-by-step explanation:

Use the auxiliary angle method:

R sin(x + a)  = Rsin x cos a + Rcos x sin a = 1

                        sin x         +    cos x             = 1

Comparing coefficients:

R cos a = 1 and R sin a =  1, so

tan a = R sin a / R cos a  = 1

So a = π/4 radians.

Also  R^2(sin^2 a + cos^2 a) =  1^2 + 1^2 = 2

Therefore R = √2.

So √2 sin (x +π/4 = 1

sin x + π/4 = 1/√2

x  + π/4 = π/4

x = 0 radians

Also

x = 0 +  π/2 = π/2.

8 0
3 years ago
A number squared increased by 5, is 41
Ksenya-84 [330]

Answer:

n² + 5 = 41          n = 6

Step-by-step explanation:

n² + 5 = 41

n² + 5 - 5 = 41 - 5

n² = 36

What squared equals 36? 6!

6² = 6 * 6 = 36

Check your answer!

6² + 5 = 41

36 + 5 = 41

41 = 41

Have a good night! :)


7 0
3 years ago
Matthew used his computer for 2 1/8 hours on Tuesday evening and for 2 1/4 hours on Wednesday
trasher [3.6K]
If your asking for the total, 2 1/4 has to change so there’s common denominator, so 2 1/4 x 2 = 2 2/8. Then add 2 2/8 + 2 1/8= 4 3/8
8 0
3 years ago
Perfrom the indicated operation
max2010maxim [7]

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Step-by-step explanation:

4 0
2 years ago
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enyata [817]

Answer:

$1.85

Step-by-step explanation:

2.15

-1.30

--------

1.85

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