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vlada-n [284]
3 years ago
11

FIND THE SURFACE AREA HELP ASAP GET BRAINLISTS

Mathematics
1 answer:
3241004551 [841]3 years ago
4 0

Answer:

\large\boxed{a.\ 7200\pi\ mm^2}

Step-by-step explanation:

The formula of a surface area of a cylinder:

S.A.=2\pi r(r+H)

r - radius

H - height

We have r = 40mm and H = 50mm. Substitute:

S.A.=2\pi(40)(40+50)=80\pi(90)=7200\pi\ mm^2

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2 years ago
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Given the following equation, at what point will the graph intersect? f(x) =5x+1 g(x)= -2x+15
Andru [333]

Answer: (2,11)

Step-by-step explanation:

To find the point where the functions will intersect, we want to find the place that they are equal to each other. We do this by setting the equations equal to each other.

5x+1=-2x+15                       [add both sides by 2x]

7x+1=15                               [subtract both sides by 1]

7x=14                                  [divide both sides by 7]

x=2

Now, we know that the functions intersect at x=2. To find the point, we would plug x back into both equations to ensure that the points are the same.

f(2)=5(2)+1                         [multiply]

f(2)=10+1                            [add]

f(2)=11

The point on f(x) is (2,11).

g(2)=-2(2)+15                    [multiply]

g(2)=-4+15                         [add]

g(2)=11

The point on g(x) is (2,11).

Since the point at x=2 is the same for f(x) and g(x), we know that the graph intersects at (2,11).

8 0
3 years ago
Calculus Question, just the first line. Other stuff is just my work...
aleksandr82 [10.1K]
What are you even asking us
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3 years ago
Given two central angles in any two circles, the ratio of the arc length to the radius of each corresponding circle is equal if
krok68 [10]
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The question also states the fact that
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Rearranging the second equation, we have 
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Then we substitute it to the first equation
s1/r1 = 2πθ1/360°
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which is now 
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By equating both sides, 2π and 360° will be cancelled, therefore leaving 
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3 years ago
Help please
Ede4ka [16]

Answer: A: 1524 miles B: Average is 508 mph

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