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N76 [4]
3 years ago
12

The sum of three numbers is 74. The first number is three less than half the second number. if the third number is four times th

e second number what is the value of the first number?
Mathematics
1 answer:
krek1111 [17]3 years ago
7 0

Answer:

x=59/6

Step-by-step explanation:

Let's just say x+y+z=74

x=y-3

z=4y

So if we wanna convert everything into one variable, we get (y-3)+y+4y=74

Simplify and you get 6y=77

Now solve for y, and - 3 to get x

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The mean of the numbers 22,18,(2y+1),10 and 20 is 15. <br>find the median.​
andrezito [222]

Answer:

Median is 18

Step-by-step explanation:

Firstly you have to fine y by using your mean

Therefore, 22+18+(2y+1)+10+20 divide it by the number of the mean that is the sum of the number divide by the total number of the mean which is 5 =15

22+18+2y+1+10+20 over 5 =15

71+y over 5 =15

Cross multiple

71+y=75

y=4

22,18,9,10, 20

Rearrange

9,10,18,20,22

The median is 18

Pls mark answer as brainliest

4 0
3 years ago
PLEASE HELP WILL GIVE THANKS AND BRAINIEST ANSWER!!!!
nataly862011 [7]
The answer I would say is letter C, I'm a bit rusty but I feel that's the answer have a nice day!
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If it takes you seven minutes to read a page in a book, how many words can you read in one minute? WHAT NECCESSARY PIECE OF INFO
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Answer:

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Step-by-step explanation:

We're given the time per page. The book could have 10 words or it could have 1,000 words. We wouldn't know until given that information.

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4 years ago
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In another aquarium display, there are 40 fish in each of 7 large tanks. How many fish are in the display?
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In this particular question, you just need to multiply the number of tanks with the number of fish each tanks able to contain.

So, 7 x 40 = 280 fishes


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