15) factor out cos: cos(x)(sin(x)+1)=0
Now this is true when either cos(x)=0 (x=pi/2 and 3pi/2)
Or when sin(x)=-1 (x=3pi/2)
So it's solutions are pi/2 and 3pi/2
I think its: A
PLZ tell me if am wrong
Answer:
He had origanlly had 68 altogether
Step-by-step explanation:
Because if u count the scrateched ones which was 6 is now 62 then add the other six because there was 12 and his brother scrateched half which is basically 12 / 2 = 6 so if u add the six is 68
What Im basically saying is 56 + 12 = 68
The total solution will include 17.5 cup of vinegar 0.5 cups of rubbing alcohol, and 2 cup of water which is a total of 35 cups of solution. Sofie will need 6 total containers to hold all of the solution.
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Number of container</h3>
1 cup of rubbing alcohol:
1 cup of rubbing alcohol=1÷1/2
1 cup of rubbing alcohol=2
Cup of alcohol needed:
Cup of alcohol needed=1+1/2+16
Cup of alcohol needed=17.5 cups
Total cups:
Total cups=17.5×2
Total cups=35 cups
Number of container:
Number of container=1+35/5
Number of container=1+5
Number of container=6 containers
Therefore the total solution will include 17.5 cup of vinegar 0.5 cups of rubbing alcohol, and 2 cup of water which is a total of 35 cups of solution. Sofie will need 6 total containers to hold all of the solution.
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