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AlekseyPX
3 years ago
10

Can someone please answer. There is one problem. There is a picture. Thank you!

Mathematics
1 answer:
jonny [76]3 years ago
5 0
SA=4pir^2
78.54km^2=SA
78.54=4pir^2
divide both sides by 4
19.635=pir^2
aprox pi=3.14 so divide both sides by 3.14
6.25318=r^2
sqrt both sides
2.50063=r
round
radius=2.5km

this question is flawed in that it gives the wrong units

answer is the option with 2.5 in it
2nd one
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If the problem is g-8\8 then the answer is 1
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How do you solve this
fiasKO [112]
(((x + y) / 3) + (1 / x)) / (5 + (15 / x))
The best way is to make it one fraction.
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4 0
3 years ago
Diameter of a circle with a circumference of 55 feet rounded to the nearest hundredth
Ket [755]

Answer:

17.51

Step-by-step explanation:

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How to solve: You just need to divide 55 feet by pi

2(pi)(r)/( pi) = 55/(pi)

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3 0
2 years ago
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Vitek1552 [10]
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8 0
3 years ago
Help please! What is the function, written as a simplified fraction?
andreyandreev [35.5K]

Answer:

f(\frac{1}{2} )=\frac{14}{3}

Step-by-step explanation:

Substitute 1/2 wherever you see x

f(\frac{1}{2} ) = \frac{-2}{3} (\frac{1}{2}) + 5\\

= -1/3 +5

= -1+15/3

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4 0
2 years ago
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