Answer:
pliz send me the formula, only dsn I can solve your answer
<h2>PERIMETER</h2>
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<em>the formula for perimeter of a Rectangle is this ::</em>
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Number 1. <span>So the duck's OWN speed (if flying without any wind) with the wind behind him is:
Where x/10 is the wind speed
The duck's OWN speed (if flying without any wind) with the wind against him is:
Where x/10 is the wind speed Remember
So we have two equations that must equal each other since they both represent the duck's speed.
We need to rearrange to find x
Add x/10 to both sides and subtract (1600/10 from both sides gives:
so x must be 400/10 which 40 metres per minute.
Number 2. </span>let s=salmon and c=current <span>
upstream __ s-c=100m/20 min __ s-c=5m/min
downstream __ s+c=100m/8min __ s+c=12.5m/min
adding the two equations __ s-c+(s+c)=5+12.5 __ 2s=17.5 __ s=8.75m/min
substituting __ 8.75+c=12.5 __ c=3.75m/min</span>
Answer:
C. eighteen and thirty two hundredths
Step-by-step explanation:
Answer: i dont know i need points super sorry.
Step-by-step explanation:
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