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fredd [130]
3 years ago
12

The sum of triple the number, n , and 8 is equal to 10 less than the number n. What is the value of n?

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
5 0
First you would interpret the sentence into an equation like so:
3n  + 8 = n - 10
Then you would solve the equation.

n would equal 9.

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There are 527 pencils,646 erasers and 748 sharpeners. These are to be put in separate packets containing the same number of item
sp2606 [1]

Answer:

  • 31 pencils
  • 38 erasers
  • 44 sharpeners

Step-by-step explanation:

The number of packets is the greatest common divisor of the given numbers of pencils, erasers, and sharpeners.

It can be helpful to look at the differences between these numbers:

  748 -646 = 102

  646 -527 = 119

The difference of these differences is 17, suggesting that will be the number of packets possible.

  527 = 17 × 31

  646 = 17 × 38

  748 = 17 × 44

The numbers 31, 38, and 44 are relatively prime (31 is actually prime), so there can be no greater number of packets than 17.

There will be 31 pencils, 38 erasers, and 44 sharpeners in each of the 17 packets.

_____

We may have worked the wrong problem. The way it is worded, the <em>maximum</em> number of items in each packet will be 527 pencils, 646 erasers, and 748 sharpeners in one (1) packet. The <em>minimum</em> number of items in each packet will be the number that corresponds to the maximum number of packets. Since 17 is the maximum number of packets, each packet's contents are as described above.

17 is the only common factor of the given numbers, so will be the number of groups (plural) into which the items can be arranged.

6 0
3 years ago
Write an expression using an expoent that is equivalent to 9x9x9x9x9x9x9.
dexar [7]

Answer:

try nine to the seventh power

Step-by-step explanation:

tell me if it works

4 0
3 years ago
Find the number of sides for a regular polygon whose interior angles each measure 10 times each exterior angle
gavmur [86]

Answer:

22 sides

Step-by-step explanation:

The expression to find an interior angle of a polygon is:

\frac{(n-2)*180}{n}

The expression to find an exterior angle of a polygon is:

\frac{360}{n}

Please note that "n" represents the number of sides the polygon has.

We can use these two expressions to set up an equation.

\frac{(n-2)*180}{n}=10(\frac{360}{n})

Multiply both sides by "n":

(n-2)*180=10n(\frac{360}{n})

Now, distribute:

180(n)-180(2)=\frac{3600n}{n}\\180n-360=3600

Divide both sides by 10:

\frac{180n}{10}-\frac{360}{10}=\frac{3600}{10}\\

18n-36=360

Add 36 to both sides:

18n=360+36\\18n=396

Divide both sides by 18:

n=22

The polygon has 22 sides

6 0
3 years ago
A car travels at an average speed of 56 miles per hour. how many miles does it travel in 5 hours and 45 minutes?
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330 miles are driven in 5 hrs and 45min at a speed limit of 56mph
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3 years ago
The following sequence is an arithmetic sequence. You are not shown very many terms of this sequence, but you are shown enough t
zzz [600]
The missing number is 12. The sequence goes 7, 12, 17. If you subtract five from each number, you get the one before it.
7 0
3 years ago
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