Answer: the expression for the combined total number of miles she biked in the two days is
117 - 5x miles
Step-by-step explanation:
Let x be the number of hours she biked yesterday.
In the two days, she biked for a combined total time of 9 hours. This means that the number of hours that she biked today is (9 - x) hours.
Distance = speed × time
Yesterday, Carmen went on a bike ride. Her average speed was 8 miles per hour. This means that the distance that she covered yesterday is 8x miles
Today, she went on another ride, this time averaging 13 miles per hour. This means that the distance that she covered today is 13(9 -x) miles.
An expression for the combined total number of miles she biked in the two days is
8x + 13(9 - x)
= 8x + 117 - 13x
= 117 - 5x
Answer:
550 miles
Step-by-step explanation:
No it is not the same because you can not reverse division problems the same way you can with multiplication.
5 1/4 / 3 1/2 is asking how many times 3 1/2 can go into 5 1/4. The answer to this would be 1.5
3 1/2 / 5 1/4 is asking how many times 5 1/4 can go into 3 1/2. The answer to this would be .667
Answer:
20
Step-by-step explanation:
Add the values
17+24+26+13=80
Divide by how many there are
80/4=20
YOU FOUND THE MEAN!!
20!
Take S(x^2+5)-(x^2)dx from 2 to 4
=S5dx=5x from 2 to 4
=5*4-5*2=20-10=10
