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Anika [276]
2 years ago
9

Find 25% of 80 kg A 40kg B 10kg C 8kg D 20kg help me plss​

Mathematics
1 answer:
vova2212 [387]2 years ago
8 0

Answer:

25% of 80 is D. 20kg

Step-by-step explanation:

50% of 80 is 40 and we know that 25% is half of 50%, so half of 40 would be 20.

So, the answer is D. 20kg

Hope this helps! :)

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Answer:

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Step-by-step explanation:

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any negative number that keeps increasing after -6

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3 years ago
1. A notebook costs $5 more than a folder. Greg purchased 3 notebooks and 2 folders and paid a total cost $30. What is the cost
stiv31 [10]
Answer
Notebook each =$4
Folder each = $9

First we write out what we know
Notebook = n
Folder = f
It says a notebook is +5 than a folder so
f = n +5
It says he bought 3 notebooks and 2 folders for $30
3n + 2f = 30

Because we know from the first equation
f=n+5, we can substitute that into the second equation for f

3n + 2(n+5) = 30
3n + 2n +10 =30. Now Combine like terms
5n +10 =30. Now isolate n by subtracting 10 from both sides
5n = 20. Now isolate n by dividing both sides by 5
n = 4

Now we do the same thing to find f
We substitute the value of n (4) into the equation 3n + 2f =30
3(4) +2f =30
12 +2f =30. Now isolate f by subtracting 12 from both sides
2f = 18. Now isolate f by dividing both sides by 2
f = 9


We check our work by inserting the n and f values we found into one of the equations
n + 5 = f
4 + 5 = 9
9 = 9. It worked it equals so it’s correct
8 0
1 year ago
3 more than twice a number is 15 what is the number
vredina [299]
The number is 6 for this
4 0
3 years ago
Read 2 more answers
Please answer quickly, thank you if u can help me
Ghella [55]
Hey there!
You can fill all the boxes using 19Hope this helps!
Please mark as brainliest if this helped you!
7 0
2 years ago
Read 2 more answers
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