Part of the question that is mission: SAT math scores have a bell-shaped distribution with a mean of 515 and a standard deviation of 114.
Solution:
For scores between 401 and 629 = (515-114 = 401) and (515+114 = 619). In other words, the range given is within 1 standard deviation.
Based on Empirical rule, 1 standard deviation represents approximately 68% thus 68% is percentage of SAT scores between 401 and 629.
Here ya go 4x + y = _____
The answer is 14.866006874....
Divide 243 by 3:
243 / 3 = 81
Subtract the exponents:
8-2 = 6
So you have 81 x 10^6
Now move the decimal point on 81 to have one digit to the left of the decimal point and then add the number of moves to the exponent.
81 becomes 8.1, and you moved the decimal 1 place, so add 1 to the ^6:
Answer is 8.1 x 10^7
Answer:
Step-by-step explanation:
(8n - 5) - (-3n+ 2) = 8n - 5 + 3n - 2 { take - inside the parenthesis }
= 11n - 7 { add like terms- 8n + 3n = 11n and -5 -2 = -7}
