9514 1404 393
Answer:
5 miles
Step-by-step explanation:
It may get a bit messy, but we can solve for the desired value directly. Let d = the distance walked (in miles). Then 20-d is the distance traveled in the car. The relevant relation is ...
time = distance / speed
The total travel time is 9:00 -6:50 = 2:10 = 2 1/6 hours = 13/6 hours. Here is the equation for total travel time.
total time = time spent walking + time spent riding
13/6 = (d/3) + (20-d)/30
Multiplying by 30 gives ...
65 = 10d + 20 -d
45 = 9d . . . . . . . . . . subtract 20
5 = d . . . . . . . . . . . . divide by 9
The girl walked 5 miles.
_____
<em>Check</em>
Her walking time was (5 mi)/(3 mph) = 5/3 h = 1:40.
Her riding time was (15 mi)/(30 mph) = 1/2 h = 0:30.
Her total travel time was 1:40 +0:30 = 1:70 = 2:10, as required.
Answer:
6) x^2+6x+8
7) x^2+3x-10
Step-by-step explanation:
Erin scored 1 of 2, or in fraction form: 1/2
Lauren scored 6 of 8, or in fraction form: 6/8
Find common denominators. multiply 4 to numerator and denominator of 1/2
(1/2) x (4/4) = 4/8
4/8 > 6/8
Lauren was more successful
hope this helps
Answer:
y=-2x-1
Step-by-step explanation:
Your goal from Standard form to slope intercept form is to have the x on the right side of the equal sign. All you have to do is subtract 2x from both sides and you end up with y= -2x-1
No, Because with the Capacity of something, thats how much the object can hold can hold Whereas the Amount is how many/much there is in something.
<span>~Hope this helped</span>
