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3 years ago

Solve for x: 4(×+10)-3=2x+13

Mathematics

2 answers:

Marat540 [252]3 years ago

5 0

Answer:

Pull out like factors

2x + 24 = 2 • (x + 12)

2x + 24 = 2x + 24

This equation is a tautology or an Identity meaning it's always true.

Step-by-step explanation:

tatuchka [14]3 years ago

5 0

Answer:

x = 12

Step-by-step explanation:

4x + 37 = 2x + 13

-2x. -2x

2x + 37 = 13

-37. -37

2x = -24

x = -12

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Answer:

Please red the answer below

Step-by-step explanation:

In order to determine the length of each cable you use the Newton second law for each component of the forces involved in the situation.

For the x component you have:

$T_1cos\theta_1-T_2cos\theta_2=0$ (1)

T1: tension of the first cable = 1500N

T2: tension of the second cable = 800N

θ1: angle between the horizontal and the first cable

θ2: angle between the horizontal and the first cable

For the y component you have:

$T_1sin\theta_1+T_2sin\theta_2-W=0$ (2)

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You can squared both equations (1) and (2) and the sum the two equations:

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Then, you sum the equations:

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Next, you use the following identity:

$sin^2\theta+cos^2\theta=1$

and you obtain in the equation (3):

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With this values you can calculate the value of the another angle, by using the equation (1):

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$l_1cos\theta_1=40-d\\\\l_2cos\theta_2=d\\\\$

d: distance to the right side of the field

By using the cosine law you can fins a system of equation and then you can calculate the values of l1 and l2.

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