Factorise : x^2-4x-21+10y-y^2

Which incondicional is not a good definition A ray is a bisector of an angle if and only if it splits the angle into two angles A whole Number is odd if and only if the number is not divisible by two An angle is straight if and only if its measure

What is the value of log 43? Use the calculator. Round your answer to the nearest tenth.

What is 16,500rounded to the nearest ten thousand

If I have 6 1/3 of juice and divide in 3 bottles. How manny cups will each bottle contain?

Lisa is measuring the depth of a well. She drops a ball from a height of h feet into the well and measures how long it takes the ball to hit the bottom of the well.

What is the area of a rectangle whose length is 12 and whose diagonal is 13?

In the Pythagorean equation, a and b represent the legs that create the right angle. True False

For the inverse variation equation xy = k, what is the constant of variation, k, when x = 7 and y = 3?

Multiply: (0.6x4) (0.2x6)

How do you solve cubic trinomials?