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Radda [10]
3 years ago
10

Here are five number cards . 2,5,7,8,9 . One of the cards is removed and the mean average of the remaining four number cards is

6
Mathematics
1 answer:
Elodia [21]3 years ago
7 0

Answer:

7

Step-by-step explanation:

Given that there are 5 number cards.

They are 2,5,7,8,9

Total of all numbers in the cards = 2+5+7+8+9= 31

One card is removed say with number x.

Now sum new would be =31-x   ..  i

Average of remaining 4 cards = 6

So sum of remaining 4 cards = 6(4) = 24 ... ii

i and ii represent the sum of remaining 4 cards. Hence they should be equal

31-x =24

Subtract 31 from both sides to get

-x=-7

Or x =7


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Suppose f(x)=x^2.What is the graph of g(x)=f(5x)?
ZanzabumX [31]

Answer:

D

Step-by-step explanation:

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this means plugging in 5x for x in f(x):

g(x)=f(5x)=(5x)^2

which can be further simplified:

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example:

g(2)=f(5*2)=f(10)=f(10^2)=100

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5 0
3 years ago
What is the positive square root of 16?
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6 0
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false

Step-by-step explanation:

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3 0
3 years ago
A dog chased a rabbit. The dog was originally 200 feet away from the rabbit. The dog’s speed is 200 feet per minute and the rabb
alex41 [277]
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4 0
3 years ago
A local hamburger shop sold a combined total of 488 hamburgers and cheeseburgers on Friday. There were 62 fewer cheeseburgers so
Andrej [43]

9514 1404 393

Answer:

  275

Step-by-step explanation:

Let h represent the number of hamburgers sold. Then the number of cheeseburgers sold is h-62, and the combined total is ...

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275 hamburgers were sold on Friday.

6 0
3 years ago
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