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Eddi Din [679]
3 years ago
7

Given : 2x+8=5x-13; prove x=7

Mathematics
2 answers:
spayn [35]3 years ago
8 0

<em><u>Step-by-step explanation:</u></em>

If we want to prove that x is equal to seven, we should first solve the equation for x so:

2x + 8 = 5x - 13

We should first add 13 on both sides and subtract 2x from both sides:

2x + 8 + 13 - 2x = 5x - 13 + 13 - 2x

21 = 3x

We can then divide both sides by 3 to get:

x = 7

solmaris [256]3 years ago
7 0

Answer:

True

Step-by-step explanation:

The left side  22  is equal to the right side  22 , which means that the given statement is always true.

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10% of 65 pls help and explain the steps to get total answer​
sergij07 [2.7K]
10% of 65
Of means multiply
=0.1 x 65
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Or you can use another way which is (part/whole) *(percent/100)

Whole=65
Percent=10
And part(part of 65)=unknown

(X/65)* (10/100)
Cross multiply
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tatyana61 [14]

Answer:

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Step-by-step explanation:

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3 years ago
Solve these linear equations in the form y=yn+yp with yn=y(0)e^at.
WINSTONCH [101]

Answer:

a) y(t) = y_{0}e^{4t} + 2. It does not have a steady state

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The first step is finding y_{n}(t). So:

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We have to find the eigenvalues of this differential equation, which are the roots of this equation:

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b) y' +4y = 8

The first step is finding y_{n}(t). So:

y' + 4y = 0

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y_{n}(t) = y_{0}e^{-4t}

Since this differential equation does not have a positive eigenvalue, it has a steady state.

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y_{p}(t) = C

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(y_{p})' +4(y_{p}) = 8

(C)' + 4C = 8

C is a constant, so (C)' = 0.

4C = 8

C = 2

The solution in the form is

y(t) = y_{n}(t) + y_{p}(t)

y(t) = y_{0}e^{-4t} + 2

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Step by step explaination

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