Answer:
Remembering the properties of numbers is important because you use them consistently in pre-calculus. The properties aren't often used by name in pre-calculus, but you're supposed to know when you need to utilize them.
Answer:
- A = 1.5
- B = -1/3
- C = -4/3
Step-by-step explanation:
For A:
- A is smack in the middle of 1 and 2, so it it 1 1/2 or 1.5 (same thing)
For B:
- Each tick mark between the numbers represents 1/3
- B is on the first tick mark between 0 and -1, so therefore it is -1/3
For C:
- C is on the first tick mark between -1 and -2
- That means C is -1 1/3
- -1 1/3 = -4/3
I hope this helps!
Answer: 28.26
Step-by-step explanation:
What your looking for is called the annulus (or the difference of two concentric circles). You can find the annulus by subtracting the area of the inner circle from the area of the outer circle. Volume of a circle= πr²
You are given the diameter in these problems, so you need radius.
For the first circle (8 in one) :
8/2=4 r=4
A=3.14(4)²
A=50.24
For the second one (10 in one) :
10/2=5 r=5
A=3.14(5)²
A=78.5
To find the measure of the annulus, you subtract those numbers, getting 28.26
Answer: y = x - 2, or y+2=x
Step-by-step explanation: The slope of the line is 1 (y increases by 1 for every x increase of 1). So we start with y = 1x + b. b is the y intercept, which is -2. Thus, we have y = 1x- 2.
