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Umnica [9.8K]
3 years ago
8

I am unsure how to this problem. Please help explain it to me.:

Mathematics
1 answer:
Oxana [17]3 years ago
6 0

She sold 160 tickets in all because if you add up the fractions 2/9 and 1/3 you'll get 5/9 Then you multiply the fraction times the tickets she has to sell.

5/9 * 288 = 160

You're welcome!

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If cara had a candle that Burned 3cm every hour how y’all would it need to be to also reach 6cm tall after 4 hours
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It had to be 18 cm tall
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3 years ago
A grain silo has the shape of a right circular cylinder surmounted by a hemisphere. If the silo is to have a volume of 505π ft3,
Romashka-Z-Leto [24]

Answer:

radius   x  = 3 ft

height   h = 23,8  ft

Step-by-step explanation:

From problem statement

V(t)  = V(cylinder) + V(hemisphere)

let x be radius of base of cylinder (at the same time radius of the hemisphere)

and h the height of the cylinder, then:

V(c)  = π*x²*h       area of cylinder = area of base + lateral area

                                              A(c)  = π*x²  +   2*π*x*h

V(h) = (2/3)*π*x³   area of hemisphere   A(h)  =   (2/3)*π*x²

A(t)  =  π*x²  +   2*π*x*h +   (2/3)*π*x²

Now A as fuction of x    

total volume   505  = π*x²*h  +  (2/3)*π*x³

h = [505 - (2/3)* π*x³ ]  /2* π*x    

Now we have the expression for A as function of x

A(x) =  3π*x² + 2π*x*h     A(x) = 3π*x² + 505  - (2/3)π*x³

Taking derivatives both sides

A´(x) =  6πx -  2πx²              A´(x) =  0         6x  - 2x²  = 0

x₁  =  0  we dismiss

6 - 2x = 0

x = 3     and   h = [505 - (2/3)* π*x³]/2* π*x

h  =  (505 - 18.84) / 6.28*3

h  = 23,8  ft

7 0
3 years ago
Which polygon will NOT tessellate a plane?
Rufina [12.5K]

Step-by-step explanation:

the answer is regular octagon

i think

7 0
3 years ago
PLEASE HELP! image below
Viktor [21]

Answer:  Angle BAD

We don't see the list; it's also called angle DAB.

4 0
3 years ago
Read 2 more answers
How do you solve -13+13​
Scorpion4ik [409]
If one addend is negative, you basically subtract it from the other number

-13 + 13 basically equals 13 - 13 =0
3 0
3 years ago
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