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Eduardwww [97]
2 years ago
8

Look at image below urgant 1000 points alert

Mathematics
2 answers:
shtirl [24]2 years ago
8 0

A = pi x r x l

= 3.14 x 5 x 13

= 204.1

Ratling [72]2 years ago
8 0

Answer:

282.7 mi^2

Step-by-step explanation:

Surface area of cone=pi*r*(r+l)=pi*5*18=282.7

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A plumber charges $25 for a service call plus $50 per hour for service. Write a linear equation in slope-intercept form to repre
Reptile [31]

Answer:

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5 0
3 years ago
Three consecutive integers have a sum of 78. find the inte
VMariaS [17]
Let the 3 numbers be x,x+1,x+2
Given sum of those 3 consecutive integers are 78
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5 0
3 years ago
Read 2 more answers
What would the correct answer be???
tiny-mole [99]

Answer:

8.27837797

I think this is correct im not completely sure.

8 0
3 years ago
Find a linear second-order differential equation f(x, y, y', y'') = 0 for which y = c1x + c2x3 is a two-parameter family of solu
Alisiya [41]
Let y=C_1x+C_2x^3=C_1y_1+C_2y_2. Then y_1 and y_2 are two fundamental, linearly independent solution that satisfy

f(x,y_1,{y_1}',{y_1}'')=0
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Note that {y_1}'=1, so that x{y_1}'-y_1=0. Adding y'' doesn't change this, since {y_1}''=0.

So if we suppose

f(x,y,y',y'')=y''+xy'-y=0

then substituting y=y_2 would give

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To make sure everything cancels out, multiply the second degree term by -\dfrac{x^2}3, so that

f(x,y,y',y'')=-\dfrac{x^2}3y''+xy'-y

Then if y=y_1+y_2, we get

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as desired. So one possible ODE would be

-\dfrac{x^2}3y''+xy'-y=0\iff x^2y''-3xy'+3y=0

(See "Euler-Cauchy equation" for more info)
6 0
3 years ago
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