What does math universal mean

Christopher has 3/4 of a pie. Alex has 2/3 of a pie. Jaden has 1/2of a pie. Who has the biggest amount? Who has the least? How much pie do the boys have altogether? Use numberline and model

Solve - 9≤4x-1<19 and write the solution in interval notation. If there is no solution, type ∅.

Mia is playing several rounds of a word game. Each coordinate pair shows the number of the round and Mias score for that round

7x (3x2) and (7x3) x2

Concrete building blocks weigh 28 pounds each. Using b for the number of concrete blocks and w for the weight, write two equations that relate to the two variables. one equation should begin with w = and the other should begin with b=.

A basket of beads contains eight red beads six yellow beads and six green beads. A bead will be drawn from the basket and replaced 150 times. What is a reasonable prediction for the number of times a green bead is drawn?

How many different 10-letter code words can be constructed from the English alphabet?

The circumference of a circle with a radius of 2 meters is approximate by the perimeter of an inscribed polygon with 10 sides. Which expression gives the described approximation of the circumference?

2x^2-16+22=0 (quadratics)

In ΔABC, AB = 20 cm, AC = 15 cm. The length of the altitude AN is 12 cm. Prove that ΔABC is a right triangle.