Someone help please 5. Which of the following represents the lengths of the sides of a right triangle?

A. 20, 28 and 32, because 400 + 784 = 1,184
B. 9, 12 and 15, because 81 + 144 = 225
C. 6, 12 and 14, because 36 + 144 = 180
D. 18, 20 and 28, because 18 + 10 = 28​

Students buying lunch at rockwell elementary school yesterday chose either burritos or pizza. 185 students chose burritos and 252 chose pizza. 1. estimate the number of students who brought lunch by rounding each number to the nearest hundred. 2. estimate how many students bought lunch by rounding each number to the nearest ten. 3. find the total number of students who brought lunch. which of your estimates is closer to the actual total? explain. 4. draw a figure on a sheet of paper. estimate how many pennies will fit inside the figure. check your prediction using pennies.

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

Kayla has a $500 budget for the school party.she paid $150 for the decorations.food will cost $5.50 per student. what inequality represents the number of students,s, that can attend the party?