Algebra Answers

The vertex of the parabola below is at the point -2,-1 and the point -1,1 is on the parabola. write the equation

How many two digit numbers are divisible by 7?

93447 is 1000 more than?
66000 is 100 more than?
13206 is 1000 less than?
4998 is 100 less than?

The ages of Arun and Mahima are in the ratio 7:5. Ten years hence the ratio of their ages will be 9:7, find their present ages.

How do you do this problem? The square root of 2 + the square root of 2/9?
I know the answer is 4 square root of 2 over 3 but i don't know how they got that answer...

if x^2 + y^2 =86 and xy = -16 find the value of (x-y)^2

4^3n times 4^n divided by 8^2n

consider a polynomial ax^4-bx^2+x+5. suppose of a(-3)^4 - b(-3) + 5= 2. what is the numerical value of a(3)^4 + b(3) + 5

speed of boat in still water is 12kilometer per hours it can get 36 kilometer up stream & return/downstream to original point in 6hours 29minitues find the speed of stream

Four coins are tossed together. Find the probability that at least 3 are tails.