Shya works part-time at a gift-wrapping. the store sells wrapping paper rolls and package of wrapping rolls. there are a total of 125 rolls and package. each roll costs $3.50 and each package costs $2.25. the total of all of the rolls and package is $347.50 . how many rolls of wrapping paper are there? show good work and explanation.

y=72

x=53

there are 72 packages

Step-by-step explanation:

3.5x+2.25y=347.5

x+y=125

Thereby y=125-x

so

3.5x+2.25(125-x)=347.5

3.5x-2.25x+281.25=347.5

1.25x=66.25

x=53

53+y=125

y=72

60 rolls

Step-by-step explanation:

first thing you want to do is add 3.50 +2.25 = 5.75

Then you divide 347.50 by 5.75

which is 60.34...

if you round that off it will be 60 rolls

answer: 75°

step-by-step explanation:

∠esk is the supplement of ∠edk, so is 100°. ∠esd = 1/2·arc ed, so is 25°.

since ∠esk = ∠esd + ∠dsk

you have 100° = 25° + ∠dsk . .

fill in known values 75° = ∠dsk . . . . .

subtract 25°

step-by-step explanation:

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !