6.75 billion in scientific notation

X - 12y = - 210 and x - 6y = 90, then x =

A right triangle abc is similar to triangle pqr such that the hypotenuse bc=10 and the hypotenuse qr=4. if ac=8, what is the length of pr? round your answer to the nearest tenth.

Factor to find the zeros of the function defined by the quadratic expression. 7x2 + 14x - 105

Is y=mx+b a linear function when b=0? Explain

What would be the results after the following code was executed? int[] x = {23, 55, 83, 19}; int[] y = {36, 78, 12, 24}; for (int a = 0; a < x. length; a++) { x[a] = y[a]; y[a] = x[a]; }

Simplify the expression (3x^3 y^-2) ^-4

How would you 2 1/4+8/3

Anagrace has $200 to invest for 10 years. If her local bank pays 7% simple interest on an investment but a national bank pays 5% interest compounded annually, which is the better choice?

How will the volume of the pyramid change if each side is multiplied by a factor of. 5

Find the radius of a circle whose circumference is 37.3cm (Take pie = 3.14cm)