PLZ HELP Given the side lengths, determine whether the triangle is acute, right, obtuse, or not a triangle.
15,17,21
Not a triangle
A cute
Right
Obtuse

3,9,10
Not a triangle
Acute
Right
Obtuse

597008.439431 to the nearest thousand

Zed is making a centerpiece for his dining room table by putting sand in a cube-shaped vase. the vase is 0.25 meters in length, width, and height. he bought 25 kg of sand. assume the density of dry sand is 1,602 kgm3. what is the volume of the sand that zed purchased? the volume of the sand is approximately m3. enter your answer as the number that correctly fills in the blank in the previous sentence. if necessary, round your answer to six decimal places, like so: 42.536475

Solve the equation for x by graphing.2^x – 4 = -4^x + 4