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Tom [10]
3 years ago
10

Select the postulate of equality or inequality that is illustrated. If 5 = x + 2, then x + 2 = 5

Mathematics
2 answers:
Delicious77 [7]3 years ago
7 0

Answer:

Symmetric property of equality

Step-by-step explanation:

The symmetric property allows you to swap sides of the equation and be assured the equation is still true:

If x = y, then y = x — symmetric property.

shepuryov [24]3 years ago
5 0

Answer:

the symmetric property of equality

Step-by-step explanation:

If 5 = x + 2, then x + 2 = 5. both have an equation so it represents an equation.

Reflexive property of equality states that  a=a

Symmetric property of equality states that

If c=a+b then a+b= c

In the given statement

If 5=x+2 then x+2=5

The given statement represents the symmetric property of equality

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What is 0.86/5-0.3*0.5
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sleet_krkn [62]

\dfrac{sin\theta + cos\theta}{sin\theta-cos\theta}+\dfrac{sin\theta-cos\theta}{sin\theta+cos\theta}=\dfrac{2sec^2\theta}{tan^2\theta-1}

From Left side:

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\dfrac{sin^2\theta+2cos\thetasin\theta+cos^2\theta}{sin^2\theta-cos^2\theta}+\dfrac{sin^2\theta-2cos\thetasin\theta+cos^2\theta}{sin^2\theta-cos^2\theta}

NOTE: sin²θ + cos²θ = 1

\dfrac{1 + 2cos\theta sin\theta}{sin^2\theta-cos^2\theta}+\dfrac{1-2cos\theta sin\theta}{sin^2\theta-cos^2\theta}

\dfrac{1 + 2cos\theta sin\theta+1-2cos\theta sin\theta}{sin^2\theta-cos^2\theta}

\dfrac{2}{sin^2\theta-cos^2\theta}

\dfrac{2}{\bigg(sin^2\theta-cos^2\theta\bigg)\bigg(\dfrac{cos^2\theta}{cos^2\theta}\bigg)}

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Left side = Right side <em>so proof is complete</em>

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