You times 50 by two so it will become 100 because you multiplied one side by two you have to do it to the other side which will be 90 so 100-90=10
Answer:
Step-by-step explanation:
Given
As the expression is given by
To determine
Simplify the expression
Let us simplify the expression
Expand 3(5 + 4y) = 15 + 12y
grouping like terms
Therefore,
Answer:
19, 20, 21, and 22
Step-by-step explanation:
19+20+21+22 = 82
X is greater than or equal to 20/23. Sorry, I don’t have the right symbols on my phone.
The speed of water current is 1.8 mph
Step-by-step explanation:
1.
The speed of steamer in still water IS 18 mph
Let the speed of current be x mph
When traveling downstream, the distance between the two ports is covered in 3 hours.The steamer is helped by the current , so the speed will be ;
18 +x mph
The distance travelled downstream will be 3(18+x) miles.
2.
Travelling upstream, the time used by the steamer is 3 hours and 40 minutes, which is equivalent to 3 2/3 hrs. Traveling upstream , the current will hinder the streamer , thus the speed will be (18-x) mph.
Distance travelled upstream will be 3 2/3 * (18-x) miles
Equate the two equations for distance to get value of x
3(18+x) = 3 2/3 (18-x)
3(18+x)= 11/3 (18-x)
9(18+x)=11(18-x)
162 +9x =198-11x
9x+11x =198-162
20x=36
x=36/20 = 1.8 mph
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Keywords : speed
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