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vlada-n [284]
3 years ago
9

a number is multiplied by 4. Next, 3 is added to the product, ans then 11 is substracted. If the result is 24, what is the numbe

r
Mathematics
1 answer:
Studentka2010 [4]3 years ago
8 0

Answer:

x = 6

Step-by-step explanation:

(x)(4) +3 -11 = 24

6 x 4 = 32

32 + 3 = 35

35 - 11 = 24

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In a doctor's waiting room, there are 14 seats in a row. Eight people are waiting to be seated. Three of the 8 are in one family
lianna [129]
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So 5 people and (3) could be considered as 6 entities:

Since the order matters, we have to use permutation:

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Another way to solve this problem is as follow:

5 + (3) people are considered (for the time being) as 6 entities:

The 1st has a choice among 14 ways
The 2nd has a choice among 13 ways
The 3rd has a choice among 12 ways
The 4th has a choice among 11 ways
The 5th has a choice among 10 ways
The 6th has a choice among 9ways

So far there are 14x13x12x11x10x9 = 2,162,160 ways
But the 3 (that formed one group) could seat among themselves in 3!
or 6 ways:

Total number of permutation = 2,162,160 x 6 = 12,972,960

4 0
3 years ago
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Natali5045456 [20]

Answer:

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The full pizza is 12 pieces.  Divide 12 by 4 to find out how much she ate on Thursday.   1/4 of 12 is 3 so she ate 3 slices on Thursday.  Subtract 3 from 12 to find out how much was left for the next day.  There were 9 slices the next day.  Next, divide 9 by 3 to find out what 1/3 of 9 is.  1/3 of 9 is 3 so subtract 3 from the 9 slices.  6 slices are the original pizza remain.

3 0
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Serhud [2]

Answer:

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Step-by-step explanation:

You can start by dividing both sides by 2, getting x \geq 6.

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