Xác định ma trận X thỏa mãn phương trình: XA = B , biết A = ( 9 -1 ) ; B = ( 1 9 )

( 7 9 ) ( 1 7 )

32/80  

91/140

the last one 54 doesn't go into 45. 54/100 ?

step-by-step explanation:

not sure but it may be b, as i said i'm not sure.

given : the shape of his satellite can be modeled by   where x and y are modeled in inches.

now,the given equation   is a equation of parabola.

here, coefficient of x is positive, hence the parabola opens rightwards.

on comparing this equation with standard equation , we get

in standard equation, coordinates of focus=(0,m)

thus for given equation coordinates of focus=(0,1.5)

step-by-step explanation: