-2 (x-7)=-(2x+5) solve for x

Answers

Answer 1

Answer: $-2(x-7)=-(2x+5) \n\n -2x+14=-2x-5 \n\n -2x+2x=-5-14 \n\n 0=-19 \n\n \boxed{x=\emptyset}$

Answer 2

Answer: $-2 (x-7)=-(2x+5) \n-2x+14=-2x-5\n14=-5\nx\in\emptyset$

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2/3x+4=2x
Is it always, sometimes, or never true?

Answers

Presuming the first element of the equation is (2/3)x and not 2/(3x) then 4=(4/3)x ... 1=x/3 ... X=3 So x=3 is a solution

Final answer:

The equation 2/3x + 4 = 2x is sometimes true, specifically when x = 3. For any other values of x, it is not true.

Explanation:

The equation you've provided is 2/3x + 4 = 2x. To determine whether this is always, sometimes, or never true, we can solve for x. Start by subtracting 2/3x from both sides of the equation to isolate the term with 'x' on one side. This yields 4 = 2x - 2/3x, or 4 = 4/3x. If we divide both sides by 4/3 (or multiply by the reciprocal 3/4) to further isolate x, we get x = 3. Thus, the equation is true for x = 3 and not true for any other value of x, so it's not always true but sometimes true.

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Whats the difference of 10 and u ?

Answers

The difference of 10 and u

Answer: 10 - u.

Suppose Galileo and his assistant were 1 km apart when Galileo uncovered his lantern to try to measure the speed of light. How long would it have taken the light signal to reach his assistant?

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There are many theories and measurement for the speed of light. It is believed that light travels at 299,792 km per second. In the earlier day philosopher Aristotle believed that light didn't travel but happens instantaneously. Therefore, for Galileo and his assistant to be only 1km apart, I would have to agree with Aristotle theory of light traveling instantaneously.

True or false? all right triangles are isosceles.***WILL AWARD BRAINLIEST ANSWER***

Thanks in advance! :)

Answers

The answer is false.

I think the answer is false

An adult elephant drinks about 225 liters of water each day. Is the number of days the water supply lasts proportional to the number of water the elephant drinks

Answers

Answer:

yes

Step-by-step explanation:

Prism A is similar to prism B. Find the volume of prism B if the volume of prism A is 4320 cm3

Answers

$k=(a_A)/(a_B)\nk=(12)/(6)\nk=2\nk^3=(V_A)/(V_B)\nV_B=(V_A)/(k^3)\nV_B=(4320)/(2^3)\nV_B=(4320)/(8)\nV_B=540 \text{ cm}^3$

Answer:

540

Step-by-step explanation:

I am confirming that the answer is 540. :)

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