What is a diagram used to show the total number of possible outcomes in a probability experiment

The answer is -17

The negative 7 and positive 7 add up to 0. They are opposites which cancel out. Think of it like being 7 dollars in debt (negative 7) and that debt is fully canceled out by the positive amount of money (positive 7). Put another way, the negative 7 means you go down 7 while the positive 7 means you go up 7.

After the first two terms cancel to 0, the -17 is the only thing left. Adding 0 to any number keeps that number the same.

Final answer:

The sum of (-7) + (+7) + (-17) in mathematics is -17, because a positive and a negative number of the same magnitude cancel each other out.

Explanation:

In the field of mathematics, particularly in arithmetic, a positive number and a negative number can be added together. In this case, you're adding the numbers -7 (negative 7), +7 (positive 7), and -17 (negative 17).
Let's break it down:

• Negative 7 plus positive 7 gives you 0 because a positive and a negative number of the same magnitude cancel each other out.
• Then, add this result (which is 0) to negative 17. The result of this is -17.

So, the sum of (-7) + (+7) + (-17) equals to -17.

Learn more about Adding Positive and Negative Numbers here:

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The required percentages obtained by calculations is 73. In other words, 73% of approximately 214.7945 is equal to 156.4.

To find 73% of a certain value, we can set up an equation and solve for that value. Let's denote the unknown value as "x".

The equation would be:

0.73 * x = 156.4

To isolate x, we divide both sides of the equation by 0.73:

x = 156.4 / 0.73

Evaluating this expression:

x ≈ 214.7945

Therefore, the required percentages obtained by calculations is 73. In other words, 73% of approximately 214.7945 is equal to 156.4.

Learn more about percentages and calculations here:

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