Find all solutions to the equation. 7 sin²x - 14 sin x + 2 = -5

Answer:     ======let  .then, acknowledging that sin²x = (sin x)², we can do substitutions to solve this like a quadratic.    factor out 7    divide both sides by 7, then    two numbers that multiply to get +1 and add to get -2: -1 and -1    substitute u back in for sin x    by the unit circle or other means, we know that the base sine function gets a value of 1 whenever  . the period of the sine function is  ; if we add or subtract the period from that answer, we will get another equivalent answer (it is periodic).so the final answer is   

3i think i’m not quite sure skskksks but if that ig

Volume is length times width times height so
20 times 8 times 30 which is 4,800
surface area is ph (p is perimeter of base), h is height.
so perimeter would be length+length+width+width so 20+20+8+8 which is 56. so multiply 56 times 30 which is 1680. hope this !