2. Driving Your brother and sister took turns driving on a 580-mile trip that took 10 hours to complete. Your brother drove at a constant speed of 55 miles per hour and your sister drove at a constant speed of 60 miles per hour. Assign labels to the verbal model below. Write and solve an algebraic model. How long did each person drive? Number of hours brother drove + Number of hours sister drove Total number of hours Brother's speed Number of hours brother drove + Sister's speed Number of hours sister drove Dimanciar Motal Shoot

580 Miles

Step-by-step explanation: et brother drive for x hours sister drive for y hours .. x+y =10 .. d=time * speed 55x+60y=580 x+y=10 1 55x+60y =5802 -55 Multiply (2) by 1 -55x+-55y=-550 55x+60y =580 Add the two equations 5y=30 /5 y=6 sister's speed distance she drove = 6*60= 360 miles Plug value of y in x+y=10 x+6=10 x=4 brother's speed distance brother drove = 4*55=220 mile TOTAL = 580 miles

i not know

step-by-step explanation:

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.