4
explain to me why you have a good job
Answer:
Step-by-step explanation:
4 pounds
$9.05 = $1.45x + $3.25
(total cost = 1.45 times pounds, plus flat fee 3.25)
subtract 3.25 from both sides of equation
9.05-3.25=1.45x
$5.80 - = $1.45x, then divide both sides by 1.45
x = 4
Answer:
Step-by-step explanation:
To convert repeating decimals to fractions, you take the numbers that are repeating, in this case 612, and you see how many numbers are repeating. Here we have 3 numbers repeating and so you would divide 612 by 3 9's meaning 999. So 0.612 repeating is equal to . To make sure the answer is right, you can divide the numbers in a calculator to make sure you get the correct decimal.
Let b and s be the velocity of the boat and stream respectively....
3(b-s)=27
b-s=9
b=9+s we will use this in the second equation....
2(b+s)=30
b+s=15, now use b found above in this to get:
9+s+s=15
2s+9=15
2s=6
s=3, and since from earlier b-s=9, b=9+s so
b=12
So the speed of the boat is 12mph and the stream is 3 mph