It would be a closed circle or "dot" since it is a less than or equal to sign.
Answer:
There are several kinds of mean in mathematics, especially in statistics. For a data set, the arithmetic mean, also called the expected value or average, is the central value of a discrete set of numbers: specifically, the sum of the values divided by the number of values.
Step-by-step explanation:
To write in the scientific notation, we have to move the decimal point to the left of the number given until it reaches the first number multiply it by ten and raise to a number equal to the number of times you move the decimal point. Therefore, the correct answer is 3.92 x 10^12.
The answer to your questions is 224. I hope this helped! Good luck on anymore tests and questions.
Remark
This may be a little confusing, but because they are travelling in opposite directions, the distances add when you want to get how far apart they are.
d1 + d2 = 1541
Equation
Let the time this happens = t
d1 = 323*t
d2 = 347*t
323*t + 347*t = 1541 Combine like terms on the left.
670t = 1541 Divide by 670
t = 1541/670
t = 2.3 hours pass before the distance of 1541 miles are between the two planes. You might need the answer to be 2 hours 18 minutes.
