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Tanya [424]
2 years ago
13

During a trip, a driver travelled a distance of 80km at an average speed of 60km/hr.He then changed his speed and travelled the

remaining 20km of his journey at 30km/hr. What was the drivers average speed for the entire journey?
Show all working!!​
Mathematics
1 answer:
oksian1 [2.3K]2 years ago
4 0

Answer:

50 km/hr

Step-by-step explanation:

D = RT

Time for first part of trip = 80/60 = 4/3 hr.

Time for second part of trip = 20/30 = 2/3 hr.

total time for entire trip = 4/3 + 2/3 = 6/3 = 2 hr.

Total distance = 100 km

Average rate of speed for entire trip = 100/2 = 50 km/hr

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The local monsters are currently throwing a bash
sammy [17]

Answer: 55 minutes

Step-by-step explanation:

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225-5= 220

Next, you would have to divide 220 by 4 to find the amount of minutes.

220/4= 55

6 0
3 years ago
A gym charges a monthly fee and an additional cost for each class. Consider the graph that represents the relationship between t
bija089 [108]
For this problem you need to understand that a linear graph is a straight line (Remember Rise/Run). 
A continous function is <span>a </span>continuous function<span> is a </span>function <span>for which sufficiently small changes in the input result in arbitrarily small changes in the output, so we can already cross off that as an answer.
The Y-Intercept is the cost (in dollars), so this would be to monthly fee. 
Now, onto the rate of change. T</span>he rate of change is <span>represented by the slope of a line. So the more classes you take the more it will increase. Therefore the cost for  one class is the rate of change. 
Lastly, the cost for one class is $10. It's not, since $10 is the intial fee to belong to a gym, so this is false. 

Recap:
True
-The relationship is linear
-The y-intercept represents the monthly fee.
-The rate of change represents the cost for one class.
False
-The relationship represents a continuous function. 
-The cost for one class is $10.
I hope I've helped you, have a great day!</span>
7 0
3 years ago
Ya'll need to start adding more points to these questions cause 5 points ain't gone do it and I'm bout ready to just stop answer
uysha [10]

Answer:

Correct I complety agree

Step-by-step explanation:

Dogecoin

7 0
2 years ago
Read 2 more answers
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allochka39001 [22]

It equals 3/16 because I first multiplied the first to fractions together and I know that negative times a positive is negative so we would get a negative and I also multiplied the 2 to get -9/40 and then multiplied -5/6  to -9/40 to get the answer of 3/16!

8 0
3 years ago
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Vaselesa [24]
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/ is same as ÷

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\boxed{\frac{1}{2} \: = \: 1/2 \: = \: 1 \div 2 \: = \: 1 : 2 }\\
5 0
3 years ago
Read 2 more answers
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