Answer:
about 0.10 cents a unit
Step-by-step explanation:
If I'm wrong, I'm sorry!!
I hope you have a great day! Good luck with your math!
Answer:
23. 92 points
24. 18.5 years old
Step-by-step explanation:
set up an equation
23. 79=chicago-13
add 13
chicago=79+13=92
24. 15.5=lou-3
loud=15.5+3=18.5
Find a common multiplier then divide ex. 21/27 = 7/9
The answer would be -3/2
A reciprocal is the inverse of a number.
When using this in fractions just switch the numerator and denominator. This is done by dividing the fraction by one, but in the case of a negative fraction you would divide by negative 1.
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
