You can use trigonometry specially the cos rule in this case. I can’t send the other pictures. But using the cos rule you can check whether the angle is 90
Answer: The answer is -9
Step-by-step explanation:
7z<-28= -9
Because we take the -28 and add 19 because that's the common denominator and we come up with -9
Answer:
2.63
Step-by-step explanation:
29/11=2.63
U need to simplify 5×5 to 25,move the negative to the left, then simplify the brackets