Mathematics, 13.10.2020 02:01 rrusso4

I need help with this problem, I don’t understand any of this

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distributive propertyaddition (subtraction) property of equalityadditive identity element (properties of real numbers)division property of equalitymultiplicative identity element (properties of real numbers)

Step-by-step explanation:

A lot of math is about identifying and matching patterns. Often, the patterns have an associated vocabulary. It helps to learn the patterns and the associated words.

Pattern: a(b +c) ⇔ ab +ac . . . description: distributive property

Pattern: a = b ⇒ a +c = b +c . . . description: addition property of equality

Pattern: a = b ⇒ a/c = b/c . . . description: division property of equality

Patterns: a -a = 0; a + 0 = a . . . description: properties of the additive inverse and the additive identity element

Patterns: a×(1/a) = 1; a×1 = a . . . description: properties of the multiplicative inverse and the multiplicative identity element

When parentheses come or go, the distributive property is usually involved. In the second line, you need to recognize that -2(3y) = -6y and that -2(-7) = +14. The result on the left is from applying the distributive property to remove parentheses.

The third line differs from the second line in that -14 shows up on both sides of the equal sign. This is a clue that the addition (or subtraction) property of equality is involved.

The fourth line differs from the third in that +14-14 disappeared from the left side, and -4-14 was replaced with -18 on the right side. The sum of a number and its opposite is zero, a property of the additive inverse. The fact that -4-14 = -18 is a property of real numbers. (You have to decide the best drop-down choice for that line.)

The fifth line shows both sides of the equation divided by -6. The multiplication (division) property of equality lets you do that.

The last line shows a simplification of the previous one. Again, the properties of real numbers and of the multiplicative inverse are involved. (You have to decide the best drop-down choice for that line.)

Answer from: Quest

check above link.

graphically? well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.

Answer from: Quest

about 168 miles

step-by-step explanation:

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