Answer:
Step-by-step explanation:
Solution by substitution method
3x+5y=7
and 4x-y=5
Suppose,
3x+5y=7→(1)
and 4x-y=5→(2)
Taking equation (2), we have
4x-y=5
⇒y=4x-5→(3)
Putting y=4x-5 in equation (1), we get
3x+5y=7
⇒3x+5(4x-5)=7
⇒3x+20x-25=7
⇒23x-25=7
⇒23x=7+25
⇒23x=32
⇒x=32/23
→(4)
Now, Putting x=32/23
in equation (3), we get
y=4x-5
⇒y=4(32/23)-5
⇒y=(128-115)/23
⇒y=13/23
∴y=13/23 and x=32/23
.25 lbs= 4oz
4oz = 113.398 g
1g= 100cg
113.398 x 100
= 11339. 8 cg
Answer: 5.44449
step-by-step explanation:
<span>18 - 2t = 12 - 0.5t
6 = 1.5t
t = 6/1.5
t = 4 hours
time required to have the same height = 4hours
At what time ?
answer : at 10pm
-------------------
12inch candle lasts longer ..</span>
Answer:
7
Step-by-step explanation:
If you divide 8y / 8 then you have to do the same thing to 56. When you do, y = 7
