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o-na [289]
3 years ago
8

What is the sum of any rational number and its opposite

Mathematics
1 answer:
Ulleksa [173]3 years ago
7 0

The correct answer you would be looking for would be 0 because it is equal to anything.

Hope this helps :)

Please mark me as brainliest!!!

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PLEASE HELP. WILL GIVE BRAINLY
zepelin [54]
For these questions it is asking you to convert different measurements.
For the first part,
You must convert 10 kilometres to meters
Or 500 meters to kilometres
For this example I will covert 500 meters to kilometres
1000 meters = 1 kilometer
So 500 meters is 0.5 kilometres or half a kilometer
So on the first day you ride 10 kilometres and increase by 0.5 kilometres a day that means you increase by 1 kilometer every two days
The question is asking how many days until you get to 15 kilometres well
15-10=5
5x2 =10 so the answer to the first part is 10 days

In the second part you have to convert again I am going to convert kilometres to meters this time
We know 1km = 1000m
So you times the kilometer by 1000 to get the meters
0.75 x 1000 = 750
So you start with 7500 and increase by 750 every day
The question asks you the total after 3 days so we must find out each day and add them up
1st day: 7500
2nd day: 7500+750=8250
3rd day: 8250+750=9000
Now we must add them together so
7500+8250+9000=24750
So the answer to this part is 24750 meters

The last part is asking you to compare the programs so let’s start with training program A
20-10=10
10x2= 20
So A is 20 days

Training program B:
We know from previous questions that on the third day you do 9000 meters so we must carry on from there
4th day: 9000+750=9750
5th day: 9750 +750=10500
6th day: 10500 + 750=11250
7th day: 11250 + 750 = 12000
As you can see there is a pattern here on the 3rd day we are on 9000 and on the 7th day we are on 12000 that means it has increased by 3000 in 4 days this is because 750 x 4 = 3000
This means we know 18000 is the 15th day
We will carry on from here
16th day: 18000+750=18750
17th day: 18760+750=19500
18th day: 19500+750=20250
Here we have gone over 200000 which is 20 km on the 18th day meaning training program B is quicker
8 0
3 years ago
So I have 3D figures of nets, and the problem is <br> Triangular prism: 5x5x4x7x6
Elza [17]
5x5x4x7x6 is equal to 4,200
7 0
3 years ago
9= 3 3_4- 2 7_8- b <br> B?
rosijanka [135]

Answer:

Step-by-step explanation:

9 - 3¾ - 2⅞ = 3⅜

He gave his grandmother 3⅜ pounds of apples.

4 0
3 years ago
If you have a rectangular space with dimensions of 200 ft. x 85 ft., and 32,500 square feet is required by 65 cars, do you have
NemiM [27]
No, you can not fit 86 cars
5 0
3 years ago
Read 2 more answers
If f(x) = x2 + 1 and g(x) =x-4, which value is equivalent to (f•g)(10)
Tasya [4]
The answer to your question is 37
5 0
3 years ago
Read 2 more answers
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