13.5/3 = 4.5
He hiked for 4.5 hours.
Answer:
25 cent stamps = 13 and 29 cent stamps = 15
Step-by-step explanation:
x = 25 cent stamps and y = 29 cent stamps
x + y = 28......x = 28 - y
0.25x + 0.29y = 7.60
0.25(28 - y) + 0.29y = 7.60
7 - 0.25y + 0.29y = 7.60
-0.25y + 0.29y = 7.60 - 7
0.04y = 0.60
y = 0.60 / 0.04
y = 15 <===== 29 cent stamps
x + y = 28
x + 15 = 28
x = 28 - 15
x = 13 <===== 25 cent stamps
lets check it...
0.25x + 0.29y = 7.60
0.25(13) + 0.29(15) = 7.60
3.25 + 4.35 = 7.60
7.60 = 7.60 (correct..it checks out)
As the input goes up by 3, the output goes down by 1.
Answer:
The Answer is = -1/36
Step-by-step explanation:
First of all we will evaluate the signs
-5/18 -(-1/4)
-5/18+ 1/4 (As negative into negative gives = positive)
then we will take LCM
LCM OF 18 AND 4 WILL BE = 36
-10+ 9/ 36
-1/36
