Answer:
r=14
Step-by-step explanation:
7r+6=8r-8
14=r
r=14
Equation:
2(n + 1)
Suppose "n" is the number you are thinking.
Step-by-step explanation:
What is 40% of 400?
- Convert the problem to an equation using the percentage formula: P% * X = Y
- P is 40%, X is 400, so the equation is 40% * 400 = Y
- Convert 40% to a decimal by removing the percent sign and dividing by 100:40/100 = 0.4
- Substitute 0.10 for 10% in the equation: 40% * 400 = Y becomes 0.4 * 400 = Y
- Do the math: 0.4 * 400 = 160
- Y = 160
- So 10% of 150 is 160
- Double check your answer with the original question: What is 40% of 400? Multiply 0.4 * 400 = 160
1. A.
None of the other answers, looking at the graph, make sense.
2. B.
Used distance formula.
sqrt[(0+8)^2 + (6-0)^2]
sqrt[8^2 + 6^2]
sqrt[64 + 36]
sqrt[100]
10
3. A.
Domain = x
(1,0) , (3,0) , (5,0) , (7,0)
Range = y
(0,2) , (0,4) , (0,6) , (0,2)
{(1,2) , (3,4) , (5,6) , (7,2)}
To find the mean (fair share/average) of the data set, you will combine all the numbers (add) and then split them into the same number of groups you started with (divide by 10).
1320/10 = 132
The mean is 132.
