20 is how much less than 30? what present less

The sum of the measures of the interior angles of a convex polygon is 2160°. How many sides does the polygon have? A. 12 B. 13 C. 14 D. 15

Quadrilateral MNPQ has vertices at (-3, 5), (-4, 6), (-5, 7), and (-6, 8). If the Quadrilateral MNPQ is reflected over the x-axis, what will the new coordinates be?

X=y-3 4x+2y=2? What is the answer

The relationship between the measurements of the Earth Radius and Earth Mass of the ten exoplanets that are in closest proximity to planet Earth is modeled by y=7.7079x - 7.

6r+7=13+7r can you show the way to solve the equation.

the number 42,__2 rounded to the hundred place is 42300. what is the least possible sum of the two missing digits? justify your answer.

What were Greek tyrants like?

Is 4b²+40b+20 a perfect square

Moving forward a negative distance is the same as moving backward a positive distance. a. True b. False

Brandon has saved $75. He goes to hot topic to buy a belt that costs $18 and some graphic t-shirts that cost $24 each.