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Fiesta28 [93]
3 years ago
10

a scale drawing of a movie screen is 21 inches long and 9 inches tall. The actual screen is 30 ft tall. Find the perimeter of th

e actual movie screen. Just put in the answer that's it​
Mathematics
1 answer:
sergiy2304 [10]3 years ago
8 0

Answer: 200

Step-by-step explanation:

you add 70+70+30+30

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Does the set {t, t Int} form a fundamental set of solutions for t^2y" -- ty' +y = 0?
Ivanshal [37]

Answer:

yes

Step-by-step explanation:

We are given that a Cauchy Euler's equation

t^2y''-ty'+y=0 where t is not equal to zero

We are given that two solutions of given Cauchy Euler's equation are t,t ln t

We have to find  the solutions are independent or dependent.

To find  the solutions are independent or dependent we use wronskain

w(x)=\begin{vmatrix}y_1&y_2\\y'_1&y'_2\end{vmatrix}

If wrosnkian is not equal to zero then solutions are dependent and if wronskian is zero then the set of solution is independent.

Let y_1=t,y_2=t ln t

y'_1=1,y'_2=lnt+1

w(x)=\begin{vmatrix}t&t lnt\\1&lnt+1\end{vmatrix}

w(x)=t(lnt+1)-tlnt=tlnt+t-tlnt=t where t is not equal to zero.

Hence,the wronskian  is not equal to zero .Therefore, the set of solutions is independent.

Hence, the set {t , tln t} form a fundamental set of solutions for given equation.

6 0
3 years ago
What is the best way to study all my countries? RN I'm on Asia, and I've done USA, Canada (provinces and territories), Central A
sweet-ann [11.9K]

Answer:

Here are some sites that I love:

Seterra Geography Games

Lizardpoint

World Geography Games

Enchanted Learning

One of these sites can hopefully help you out. Bye!

4 0
3 years ago
Read 2 more answers
It's not multiple choice, anyone know the answer I'm stuck :(
lana66690 [7]

Answer:

regular polygon of 9 sides has 9 lines of symmetry

7 0
3 years ago
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An elliptical track has a major axis that is 50 yards long and a minor axis that is 44 yards long. Find an equation for the trac
Luden [163]
Do It Have a Pictures
8 0
3 years ago
Solve 12x<br>x + 16 - 1 = 0<br>​
zhuklara [117]

Answer:

xx=-0.8

Step-by-step explanation:

not sure if this is right because the 12xx is kind of strange

12xx+16-1=0
12xx+15=0
12xx=-15
12/12xx=12/-15
xx=-.8

5 0
2 years ago
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