Answer:
to the shop : 5/8 of an hour
back home : 3/8 of an hour
Step-by-step explanation:
We use the relationship between distance travelled, speed and time given by the formula:
speed = distance / time
We know that the distance from home to the coffee shop is D (same for trip back)
We also know the two speeds in one direction 9 mph and in the other 15 mph
then we can find the times t1 (to the coffee shop) and back (t2) by using the equations:
D = 9 * t1
D = 15 * t2
1 = t1 + t2
We set the two distances equal to have:
9 * t1 = 15 * t2
then t1 = 15 * t2 / 9 = 5 t2 / 3
and use this to substitute for t1 in the last equation:
t1 + t2 = 5 t2/3 + t2 = 1
8 t2 /3 = 1
then t2 = 3/8 of an hour
and therefore t1 must be 1 - t2 = 5/8 of an hour
You would start by saying his budget is $80 so you start with 80= he pays an initial fee of $59.50 every month plus $5 per gigabyte so you would set it up like
80=59.50+5x
X being how many gigabytes he uses then you solve 80-59.50 is 20.5 divided by 5 gives you 4.1 but you round down cause you don’t want to pass the limit so therefor the most gigabytes he can use is 4
Hello Syndy393, Which expression is equivalent to 18a+12b+9a+24b,
<span>27a+36b, Because 18a+9a=27a 12b+24b=36b,so the correct answer is 27a+36b.</span>
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Answer:
yes, Dave is correct
Step-by-step explanation:
everything else only has one line of symmetry
6-3y=-6
Move 6 to the other side
Sign changes from +6 to -6
6-6-3y= -6-6
-3y= -6-6
-3y= -12
divide both sides by -3
-3y/-3= -12/-3
Answer: y= 4