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level: Level 1

Questions and Answers List

level questions: Level 1

Question	Answer
First Outside Inside Last	What does FOIL stand for?
(5x-2)(x-8)	What is an example of FOIL?
a^2-b^2=(a-b)(a+b)	What is the formula for difference of squares?
x^2-25 a=x b=5 x^2-5^2=(x-5)(x+5)	What is an example of difference of squares?
m^2+25	What is not an example of difference of squares?
It's where you have 3 terms instead of 2.	What is trinomial factoring?
x^2-16x+15 Find the factors of 15... 1x15 -1x-15 3x5 -3x-5 Then add each factor together separately... Which ever one gives you the middle term is the answer... 1+15=16 -1+-15=-16 3+5=8 -3+-5=-8 =1+-15 is the answer so you would put it together like this... (x-1)(x-15)	What is an example of a trinomial factor?
Average. Add all the numbers together then divided by the amount of numbers you have.	what is the definition of mean?
45, 30, 55, 25 add them together... the answer when you add them is 155... you have a total of 4 numbers... so you would divide 155 by 4 and the answer overall would be... 38.75	What is an example of mean?
middle value of a data set. put numbers in order from least to greatest. If it has one number that's your answer. But if it has 2 number you will add the numbers together and divide them by 2.	What is the definition for median?
Say you have the numbers 45, 30, 55, 25... you would put them in order from least to greatest... 25, 30, 45, 55... find the middle number or numbers which are 30 and 45... add them together which is 75... then divide that number by 2 which is... 37.5	What is an example of median?
Mode is the most used number.	What is the definition of mode?
say you have the numbers... 80, 70, 90, 70, 35, 95, 10, 70 the mode would be the number you see the most which is... 70 because you see it 3 times and more than any other number	What is an example of mode?
(π=3.14) π=c/d c=πd c=πx2r c=2πr	What is the formula for circumference of a circle?
c=πd c=3.14(145) c=455.3	What is an example of c=πd?
c=πx2r c=3.14x2(40) c=3.14(80) c=251.2	What is an example of c=πx2r?
a=πr^2	What is the formula for the area of a circle?
a=πr^2 a=3.14(72.5)^2 a=16504.625 cm^2	What is an example for the area of a circle?
a=πr^2 a=3.14(3)^2 a=28.26 cm^2	What is another example for the area of a circle?