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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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Please help me please!!!!!
creativ13 [48]
Take 110 and divide by 2 so 110/2 = 55 = b
8 0
3 years ago
Identify the middle line for the function.
Ierofanga [76]
The solution to the problem is as follows:

<span>'(t) = 0 gives:
 
-24t + 60 = 0
 
t = 2.5
 
For this t, the second derivative s"(t) = -24 is negative.

And so, s(t) is maximum for t = 2.5.
 
Maximum height is:
 
S = -12(2.5)^2 + 60(2.5) +8 = 233ft
</span>
I hope my answer has come to your help. God bless and have a nice day ahead!
7 0
3 years ago
Read 2 more answers
The average wind speed at a local weather station is 34.8 miles per hour. The highest speed ever recorded the stations 318.0 mil
lukranit [14]

Answer:

Difference = 283.2\ miles/hour

Step-by-step explanation:

Given

Average\ Speed = 34.8\ miles/hour

Highest\ Speed = 318.0\ miles/hour

Required

Determine the difference in the highest speed and the average speed

Difference = Highest\ Speed - Average\ Speed

Difference = 318.0\ miles/hour - 34.8\ miles/hour

Difference = 283.2\ miles/hour

<em>Hence, the highest speed is 283.2 miles/hour faster than the average speed</em>

3 0
3 years ago
Find the indicated limit, if it exists.
babymother [125]

Answer:  -3

Step-by-step explanation:

-10+7=-3

5 0
2 years ago
Write the equation of the line perpendicular to F(x)=5 that goes through (-1, -3)
Ainat [17]

Answer:

x = -1

Step-by-step explanation:

y = 5 is a horizontal line

It's perpendicular would be a vertical line of the form:

x = a

Since it passes through (-1,-3)

a = -1

Hence line is: x = -1

3 0
3 years ago
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