Beth's speed was 60 mph.
<h3>
What is speed?</h3>
- The speed (commonly referred to as v) of an object in everyday use and kinematics is the magnitude of the change in its position over time or the magnitude of the change in its position per unit of time; it is thus a scalar quantity.
- The distance traveled by an object in a time interval is divided by the duration of the interval; the instantaneous speed is the limit of the average speed as the duration of the time interval approaches zero.
- Velocity is not the same as speed.
To find what was Beth's speed:
Beth's data:
- time = 2 hrs; rate = r mph; distance = r×t = 2r miles
Tim's data:
- time = 1 hr; rate = r-6 mph; distance = r-6 miles
Equation:
- distance + distance = 174 miles
So,
- 2r + r - 6 = 174
- 3r - 6 = 174
- 3r = 180
- r = 60 mph (Beth's rate)
- r-6 = 54 mph (Tims's rate)
Therefore, Beth's speed was 60 mph.
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20 mails in 1/4 day (0.25 day)
-> 1 day = 20/0.25 = 80 emails
Answer:
Whichever distance you can count the metric units and see that the x value is 7 on
Step-by-step explanation:
Whichever distance you can count the metric units and see that the x value is 7 on
20 cookies because y = 8 + 6(x)
X = 2 since half of the cookies left was 6
6(2) = 12 and 12+8 = 20
So in total she baked 20cookies
Answer:
n = 1500
Step-by-step explanation:
The sample size is the number of students that were asked
n = 1500
