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Molodets [167]
3 years ago
12

5x + 20 = -5x What does "x" equal?

Mathematics
2 answers:
True [87]3 years ago
7 0
<span>5x + 20 = -5x
5x + 5x = -20
10x = -20
x = -20/10
x = -2</span>
mestny [16]3 years ago
6 0
5x+20=-5x x would represent 2 because if you replace x with two here is what you get
5(2)+ 20=-5(2)
10+20=-10
Which is equivalent to the first expression
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Tucker worked 5.5 hours on Saturday. He earns $7.20 per hour.<br> How much did he earn on Saturday?
Mrac [35]

Answer:

$39.6

Step-by-step explanation:

5.5 times 7.20 = $39.6

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2 years ago
A candy jar contains flavoured jelly beans. There are 7 orange, 9 cherry, 3 lemon, 15 licorice, and 6 blueberry. Find the probab
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There are 40 beans in total. Only 10 of those are orange and lemon flavored.

8 0
3 years ago
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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
Which situation would require an answer that is a whole number?
Dmitry_Shevchenko [17]

Answer:

The set of positive integers and zero.

Step-by-step explanation:

[0 1 2 3 4 5 6 7 8 9......∞)

7 0
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This material is hard for me
Firdavs [7]
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