2.81796116505 is the awnser
Answer:
That would be a histogram.
Step-by-step explanation:
Well it wont be a line graph because the data given is not a function. Also a bar graph shows categorical data which is different from a histogram because histogram shows numerical data. Also bar graph uses graphic presentation to compare different categories of data while a histogram shows frequencies of numerical data. Since our given data is a numerical data as well as the same kind of data we would therefore use a histogram.
Answer:
a) 3 x 20 = 60
b) -2x20 = -40
question c and d are unclear as we do not know how many questions were wrong and how many were not answered.
Sorry but I hope that helped
Answer:
There are 21 blue marbles
Step-by-step explanation:
In this question, we are asked to calculate the number of blue marbles in a bag that contains a total of 60 marbles, given the probability of choosing a blue marble.
Mathematically, the probability of choosing a blue marble can be represented as:
P(B) = number of blue marbles/ Total number of marbles
From the question, we can identify that P(B) is 0.35, number of Marbles is unknown while the total number of marbles is 60.
We insert these values in the equation;
0.35 = number of blue marbles/60
Hence, number of blue marbles = 60 * 0.35 = 21