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3 years ago

What makes an equation true?

Mathematics

2 answers:

Serggg [28]3 years ago

8 0

Answer:

when each side equals the other side

Step-by-step explanation:

dexar [7]3 years ago

7 0

Answer:

Step-by-step explanation:

An equation is true when certain values are able to be substituted for the variable which is most of the time "x", the values that make an equation true is when the answer has a solution.

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Solve the equation 8-2x=-8x+14

Salsk061 [2.6K]

Answer:

x= -3/5

Step-by-step explanation:

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2 years ago

4.) Which equations below have no solution? Select all that apply, and justify your response with work. a.) x - 9 = 2(x - 3) + 1

Sophie [7]

Answer: Equations (b) and (e) do not have solutions

Step-by-step explanation: b) The x cancels out (-10x + 35) = -10x + 318; 35 = 318???? NO. e) 3(x + 2) + 1 = x + 2(4 + x); 3x + 7 = 3x + 8. The x cancels out again.

The other s can be solved for x.

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2 years ago

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8 m 15 m What is the perimeter?

Vadim26 [7]

Answer:

The perimeter is 46.

Step-by-step explanation:

You have to add the numbers 15 + 15 = 30 and 8+8 =16 then add 30 plus 16 which gets you 46.

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2 years ago

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A regular octagon rotates 360° about its center. How many times does the image of the octagon coincide with the preimage during

Anuta_ua [19.1K]

This regular polygon, having eight sides and 45º angle in similar parts, when rotating 360º, will find a similar image and a similar angle of 45º, therefore dividing the angle of 360º by 45º will be the Number of coincidences in image.

Solving, thus, we have:
 $\frac{360}{45} = \boxed{\boxed{8\:coincidences\:in\:image}}\end{array}}\qquad\quad\checkmark$

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2 years ago

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Which unit is commonly used in both the metric and u.s system of units

Arlecino [84]

Answer:

Step-by-step explanation:

Surely the units of time: minut, hour, second.

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3 years ago

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