How can the Subtraction Property of Equality be used to solve addition equations?

2 answers:

8 0

To keep the balance, add 5 to each side. Example 2. Solve the equation -8 = n - (-4). Solution: After simplifying the right side of theequation, use the subtraction property of equality to subtract 4 from both sides of theequation

marta [7]3 years ago

3 0

Ok, so for example, we have an equation of 4x+5 = 17. To solve for x, we first subtract 5 on both sides. This is called Subtraction Property of Equality.

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Andrei [34K]

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3 years ago

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A police officer claims that the proportion of accidents that occur in the daytime (versus nighttime) at a certain intersection

Roman55 [17]

Answer: -1.78

Step-by-step explanation:

As per given description, we have

Population proportion : $p=0.35$

Sample size : n= 500

Sample proportion : $\hat{p}=\dfrac{156}{500}=0.312$

Test statistic for population proportion :-

$z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\\\=\dfrac{0.312-0.35}{\sqrt{\dfrac{0.35(1-0.35)}{500}}}\\\\=-1.78146747757\ \ \text{(Simplified)}\\\\\approx-1.78$