x+y=7 → y =7 − x
28x+15( 7 − x ) =131
28x + 105 − 15x = 131
13x + 105 = 131 subtract 105 from both sides
13x = 26 divide both sides by 13
x = 2 = fancy shrts bought
y =7 − 2 = 5 plain shirts bought
2.375 as a "decimal"
This ???
(5/4) * 81 =
405 / 4 =
101 + 1/4
13 km = 13000m ...... 50 min = 5/6 hr
So :
13000m/hr * (5/6) hr ≈ 10, 833 m
Incorrect, Guest....
x = 0 is a solution
0 = 0 represents infinite solutions.....
LOL!!!!!!!.....infinetly stoopid..........!!!!
As written, it's the y intercept (0, −3)
-7<-(r-10)
-7<-r+10 subtract 10 from both sides
-17 < -r multiply both sides by -1 .....reverse the inequality sign
17 > r
Happy New Year, Rosala......!!!
