For this case we have the following expression:
For simplicity we follow the steps:
We apply distributive property to the terms within the parenthesis, bearing in mind that:
We add similar terms taking into account that equal signs are added and the same sign is placed, while different signs are subtracted and the sign of the major is placed.
ANswer:
Let, the speed of boat = x
Speed of current = y
So, x + y = 280/7
x + y = 40 ---- first equation
x - y = 280/14
x - y = 20
x = 20 + y
Substitute this value of x in first equation,
20 + y + y = 40
2y = 40 - 20
y = 20/2
y = 10
Substitute this in first equation,
x + 10 = 40
x = 30
In short, Speed of Boat = 30 mph, & speed of current = 10 mph
Hope this helps!
.................................................idk
Answer:
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Step-by-step explanation:
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Answer: The answer is 896.
Step-by-step explanation: There are several ways to answer this. If you multiply both the 28 and the 32 you get the final answer 896 quickly.
However there are different ways to get the answer that aren't as quick as this one.
First we multiply.
<em>30*20=600 </em>
Then we continue multiplying.
<em>8*30=240 </em>
<em>20*2=40 </em>
<em>8*2=16 </em>
Then we add all the values up starting with the hundreds
<em>600+240=840. </em>
<em>40+16=56</em>
Finally we add both of the values up and we get our answer <em>840+56=896. </em>
<u><em>A=896 Hope this helps!</em></u>
