Which of the following lengths will form a triangle? A: 12.6 cm, 5.4 cm, 5.4 cm
B: 7.2 cm, 5.9 cm, 1.3 cm
C: 11.5 cm, 4.2 cm, 7.6 cm
D: 3.1 cm, 6.6 cm. 10.4 cm​

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

Which is the length of the hypotenuse of the triangle a. 94ft b. 214 ft c. 33ft d. 37 ft

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2