x+y = 90
x=2y+9
2y+9+y=90
3y=81
y= 27 Emily's age
x= 2*27+9 = 63 Matt's age
Answer:
i believe its 54, but it feels like a trick question. Im missing some information but i think 54 is a safe answer with the information i have right now
Step-by-step explanation:
32 + 36 = 68
68 - 14 = 54
Im not really sure if it's correct or not.. but i think it is..
r = recycling and reuse
w= waste management
equation: 1275000 =r+w
r = 1025000
1275000 = 1025000+w
-1025000 -1025000
250000 = w
r = 1025000
w = 250000
Step-by-step explanation:
to compare day 1 with day 2 :
100% = 8
1% = 100%/100
25% = 25×1% = 100% × 25/100 = 8 × 1/4 = 2
so, on day 2 he walks 8+2 = 10 laps.
on day 3 he walks then 10-1 = 9 laps.
so, now, to calculate the % decrease compared to day 2
100% = 10
1% = 100%/100 = 0.1
how many % is represented by this 1 lap he was walking less ?
1 / 1% = 1 / 0.1 = 10%
so he had a 10% decrease from day 2 to day 3.
Answer:x-5
Step-by-step explanation: