7=7, 14, ,21, 28
3= 3, 6, 9, 12, 15, 18, 21, 24
So the LCM of 7 and 3 is 21.
Answer:
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Step-by-step explanation:evs kd vjkdfxds
The answer is 65!
<span>How i got this was I did 6500/5 and got 1300 then i took then then multiplied by 5% and got 65
</span>I hoped I helped!
-3/2 × x - 9 = -27
+ 9
-3/2 × x = -18
× 2
-3 × 2x = -36
-6x = -36
÷ -6
x = 6
Hope this helps! Let me know if I've confused you or anything
Answer:
After 4 hours, two candles be at the same height.
Step-by-step explanation:
Let us assume after burning for m hours, both candles are same height.
Length of candle A = 12 inch
Burning rate = 0. 5 inches per hour
So, the candle burned in m hours = m x (0.5) = 0.5 m inches
The height of candle left after m hours = 12 - 0.5 m
Length of candle B = 18 inch
Burning rate = 2 inches per hour
So, the candle burned in m hours = m x (2) = 2m inches
The height of candle left after m hours = 18 - 2 m
According to question:
After m hours: Height of candle A = Height of candle B
or, 12 - 0.5 m = 18 - 2 m
⇒ 12 - 18 = -2m + 0.5 m
or. - 6 = -1.5 m
or, m = 6 / 1.5 = 4
or, m = 4
Hence, after 4 hours, two candles be at the same height.
