Add and simplify

12 yd 2 ft 10 in
6 yd 1 ft 8 in
16 yd 2 ft 9 in
=

8 yr 9 mo 23 da
12 yr 11 mo 16 da
19 yr 7 mo 28 da
=

15 lb 12 oz
19 lb 15 oz
23 lb 7 oz
=

Step-by-step explanation:

1. Use the conversions 1 yd = 3 ft, 1 ft = 12 in.

  (12 yd +2 ft +10 in) +(6 yd +1 ft +8 in) +(16 yd +2 ft +9 in)

  = (12 +6 +16) yd + (2 +1 +2) ft + (10 +8 +9) in

  = 34 yd + 5 ft + 27 in

  = 34 yd +5 ft + (2 ft +3 in) . . . . convert 27 in to feet and inches

  = 34 yd + 7 ft + 3 in . . . . . . . . . add feet

  = 34 yd + 2 yd + 1 ft + 3 in . . . . convert 7 ft to yards and feet, then add yards

  = 36 yd + 1 ft + 3 in

__

2. Use the conversions 1 yr = 12 mo, 1 mo = 30 da. (To be more accurate, we need to know the starting date of each time period.)

  (8 yr +9 mo +23 da) +(12 yr +11 mo +16 da) +(19 yr +7 mo +28 da)

  = (8 +12 +19) yr +(9 +11 +7) mo +(23 +16 +28) da

  = 39 yr +27 mo +67 da

  = 39 yr + 27 mo + 2 mo +7 da . . . . . convert 67 da to mo and da

  = 39 yr + 2 yr + 5 mo + 7 da . . . . . . . convert 29 mo to yr and mo

  = 41 yr +5 mo +7 da

__

3. Use the conversion 1 lb = 16 oz.

  (15 lb +12 oz) +(19 lb +15 oz) +(23 lb +7 oz)

  = (15 +19 +23) lb +(12 +15 +7) oz

  = 57 lb +34 oz

  = 57 lb +2 lb + 2 oz . . . . . convert 34 ounces to pounds and ounces

  = 59 lb +2 oz

hey there!

if she's saving for six months, let's divide the total number we need for the trip by six, dividing it into the amount that needs to be saved for each month.

500 ÷ 6 =

she needs to save at least this amount each month, so we should use this symbol: ≥

let x be the amount she saves each month.

your final answer is x ≥

hope this !

ghjmutmum

step-by-step explanation: