Hi Braniac
S = his speed for the 1st 20 mi
(s-2) = His speed for the last 16 mi
We know that :
time= distance/ speed
initial time = cool down time
20/s = 16/(s-2)
Now cross multiply
20(s-2) =16s
20s-40=16s
20s-16s=40
4s = 40
Now we need to divide both sides by 4 so we can find the speed
4s/4 = 40/4
s= 10 mph
His initial speed is 10mph
Now let's find his cool down speed
10-2 = 8mph
His cool down speed is 8mph
I hope that's help :)
If you have any questions please let me know :)
Answer:
b. 360
Step-by-step explanation:
If they are getting 180 packages and each case has 12 packages then you would need to do 180/12 to get the amount of cases they are buying aka 15 cases. 2 packages cost $48 so 1 package would cost $28. Then you would do $28 times 15cases and get $360
In more # and less words
180/12=15 getting 15 cases
48/2=24 cost of 1 case
15(24)=320 The total amount
I hope this helped!
Answer:
0.04671
Step-by-step explanation:
Basically, add a number smaller than 0.0001
Answer: We need how much he spent on the whole thing
Step-by-step explanation:
It isn't really specific because he could of bought 6 pencils and 9 markers for all we know so we need the total how much he spent on all 15 markers and pencils
Answer:
Hence the simplification of 
is 
Step-by-step explanation:
<em>" Simplification is the process of replacing a mathematical expression by an equivalent one, that is simpler (usually shorter), </em>
<em>for example</em><em>: Simplification of a fraction to an irreducible fraction ". </em>
Here we are given a fraction as:
As both the numerator and denominator are divisible by a factor of 3 hence we take out the common factor and obtain the reduced fraction which is further irreducible.
As 66=3×22 and 81=3×27
Hence 
Hence the simplification of is
