Some Math Help???

I need some help again on math


Thank you





1. What is the approximate circumference of a circle is 3?





2.(I don't understand questions like this)


If a+b is less the c+b and d+e is less than a+b the e is


a)less then c b)equal to c c)less than d d)greater than d





3.(On this one I know that you have to put the numbers in to see what works and nothing works) HELP


Solution set of m^2-3m-10=0


a){5,-2} b){2,-5} c){3,-10} d){3,10}





4.The smallest integer greater than 1 both a square of an integer and cube of an integer?


a)8 b)9 c)36 d)64





5.What must be added to 3x-7 to = 0?


a)0 b)3x+7 c)-3x-7 d)-3x+7





6. 357 seniors. Ratio Boys to Girls 7:10. How many boys are in the senior class?





Thank You again (help)


:)

Some Math Help???
1. if u mean that the radius is 3:


circumference = 2 * pi * r = 2 * 3.14 * 3 = 18.84





2. I think u can't know from these 2 statements





3. a){-2,5}


u should know that the solution of this equation ax^2+bx+c=0


is -b/2a +- sqrt{b^2-4ac}/2a





4. 64


beginning from


2^3 = 8 which is not a square of an integer,


3^3 = 27 which is not a square of an integer,


4^3 = 64 which is the square of 8





5. -3x + 7


trivial





6. 147


Boys to Girls 7:10


Boys to Seniors 7:17


number of boys = 7/17*357 = 147
Reply:1. Not a question--you left something out.


2. I think you typed this one wrong too.


3. Check (a) again. Or factor the polynomial.


4. 8 is not a square


9 is not a cube


36 is not a cube


So look closer at 64


5. I really think you can do this. Do you know how to take the negative of 3x-7???


6. 7/17ths are boys. 10 =.17ths are girls. What's 1/17 of 357?