Answer:
1. True
2. False
3. True
4. False
5. True
Step-by-step explanation:
1. For a real number a, a + 0 = a.
This is true, any number plus zero is that number.
2. For a real number a, a + (-a) = 1.
This is false. Adding a negative number is the same as subtracting that number. So a + (-a) = a - a = 0
3. For a real numbers a and b la-bl = |b-al.
This is true. Absolute value represents the distance between two numbers. This number can never be negative, therefore la-bl = |b-al.
4. For real numbers a, b, and c, a +(bº c) = (a + b)(a + c).
False. a + (b * c) = a + bc.
If you foil (a + b)(a + c) you will see its equal to a²+ab+ac+bc, which is definitely different than a + (b*c)
5. For rational numbers a and b when b# o, is always a rational number.
True, a rational number is one that can be written as a fraction with two integers. The quotient of two rational numbers can always be written as a fraction with integers.
Answer:
She has 225 dollars
Step-by-step explanation:
75% of her $300
Change the percent to decimal form
.75 * 300
225
She has 225 dollars
Answer: 29
Step-by-step explanation:
If you set up an equation, it would look like this:
x-13=16
I made "a number" x, and then subtracted 13 from it, making it equal to 16. Then all that is left to do is to add 13 to both sides, so you end up with 29.
Hope this helps you! Feel free to ask me any further questions!
Answer:
UV and VW
Step-by-step explanation:
The line segments intersecting at point V are the sides.
