Làm thế nào để tìm được nghiệm trong phương trình sau: 8.X^2-54.x-392=0

find out the value of b

step-by-step explanation:

its 4 because 2 times 2 is 4, if you double the number two you get four

so a parallelogram is just like a square base times height. multiply 40 and 39 to get 1560 inches.

a triangle is base times height divided by two. so multiply 7.9 and 5 and then divide it by 2 to get 19.75inches.

the kite can be split into two separate triangles and added together to get the total area. 30 x 4 /2 which equals 60. make sure to double it for the two triangles making 120.