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mixer [17]
3 years ago
7

What's the value of x ? (I marked a random answer )

Mathematics
1 answer:
kondor19780726 [428]3 years ago
6 0
X^2 = 60
x = +-sqrt(60)
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. A group of 18 people ordered soup and sandwiches for
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7 0
3 years ago
The differential equation y′′=0 has one of the following two parameter families as its general solution: yyyy=C1ex+C2e−x=C1cos(x
svet-max [94.6K]

Answer:

y_c = 2 + 10*x

Step-by-step explanation:

Given:

                                                y'' = 0

Find:

- The solution to ODE such that y(0) = 2, y'(0) = 10

Solution:

- Assuming a solution y = Ce^(mt)

So,                                y' = C*me^(mt)

                                    y'' = C*m^2e^(mt)

- Back substitute into given ODE, we get:

                                    y'' = C*m^2e^(mt) = 0

                                    e^(mt) can not be equal to zero

- Hence,                       m^2 = 0

                                     m = 0 , 0 - (repeated roots)

- The complimentary function for repeated roots is:

                                    y_c = (C1 + C2*x)*e^(m*t)

                                    y_c = C1 + C2*x  

- Evaluate @ y(0) = 2

                                    2 = C1 + C2*0

                                    C1 = 2

-Evaluate @ y'(0) = 10

                                    y'(t) = C2 = 10

Hence,                         y_c = 2 + 10*x

5 0
3 years ago
Last week, Chen bought ​ 8 1/2 ​ gallons of gas at $2.30 per gallon. This week, he bought ​ 4 3/10 ​ gallons of gas at $2.70 per
kompoz [17]
I got $31.25 it might be wrong i used a calculator.

5 0
3 years ago
Read 2 more answers
7y - 9 = 3y + 19<br> a. 7<br> b. -4<br> C.<br> -7<br> d. 4
andreev551 [17]
The answer is A. 7
so y=7
6 0
2 years ago
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