A circular garden is surrounded by a circular path of 7m width. If the area of path is 770m²,find the area of the garden without path. help me this question ⁉️​

John makes $10.50 pers hour what expression represens how much he will make if he works h hours

Solve the system. -a+4b+2c=-8 3a+b-4c=9 b=-1 a.(0,11) ,-1,2) c.(1,1,-2) d.(2,-1,-1)

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?