So it's like 'which one of the number given is a factor of, say, 10' and the choices are 4,5,7,9. the answer is 5 so just factor out the equation
the factored out form is
factor out the 3x^2 and get
(3x^2)(3x^2-2x+1)
and 3x^2-2x+1 is the fourth choice
Compare: there are 2 other sevens in the number contrast: the sevens are in different place values
This one is D. 3 ounces of seeds and 7 ounces of dried fruit.
Answer:
a) 0.05
b) 0.0526
c) 0.0625
Step-by-step explanation:
Data provided in the question:
Total number of students in a class = 20
a) since it is Monday, no student will be selected already.
Therefore,
There are 20 students from which one can be selected
Thus,
P(Serena is selected on Monday) = 1 ÷ [Number of students available]
= 1 ÷ 20
= 0.05
b) On Tuesday, one student has already been selected on Monday
Therefore,
There are (20 - 1) = 19 students from which one can be selected
Thus,
P(Serena is selected on Tuesday) = 1 ÷ [Number of students available]
= 1 ÷ 19
= 0.0526
c) On Friday , 4 student has already been selected on Monday
Therefore,
There are (20 - 4) = 16 students from which one can be selected
Thus,
P(Serena is selected on Tuesday) = 1 ÷ [Number of students available]
= 1 ÷ 16
= 0.0625
