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irga5000 [103]
2 years ago
14

Solve the linear equation. 8x 32=1/5(25x−15)−4x. for x.

Mathematics
1 answer:
Dahasolnce [82]2 years ago
6 0

There is no sign before 32 is given in the equation. I am showing the work with +32.

8x+32=1/5(25x−15)−4x.

8x+32=5x-3-4x By distribution property.

8x+32=x-3 Combine the like terms.

8x=x-3-32 Subtract 32 from each sides.

8x=x-35 Combine the like terms.

8x-x=-35 Subtract x from each sides.

7x=-35

\frac{7x}{7} =-\frac{35}{7} Divide each sides by 7.

So, x=-5

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Mason has a collection of 49¢ stamps, 20¢ stamps, and 34 stamps worth $23.55. He has 56 total 49¢ and 20+ stamps and the number
tatuchka [14]

Answer:

Mason has

  • 16 20¢ stamps;
  • 25 3¢ stamps;
  • 40 49¢ stamps.

Step-by-step explanation:

Let x be the number of 20¢ stamps, then the number of 3¢ stamps is  x + 9.

Mason has 56 total 49¢ and 20¢ stamps, then the number of 49¢ stamps is 56 - x.

Amounts:

  • in 49¢: 49(56-x) cents;
  • in 20¢: 20x cents;
  • in 3¢: 3(x+9) cents.

Total amount:

  • 49(56-x)+20x+3(x+9);
  • $23.55.

Hence,

49(56-x)+20x+3(x+9)=2,355\\ \\2,744-49x+20x+3x+27=2,355\\ \\-49x+3x+20x=2,355-2,744-27\\ \\-26x=-416\\ \\26x=416\\ \\x=16

Mason has

  • 16 20¢ stamps;
  • 25 3¢ stamps;
  • 40 49¢ stamps.
5 0
3 years ago
AHHH I just wanna know if what I put on the table is right ;-;​
vfiekz [6]

Yeah you did well on the table

3 0
3 years ago
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Which of these numbers is a prime number: 1, 11, 21, 51?
statuscvo [17]

Answer:

11 and 51

Step-by-step explanation:

1 technically isn't a prime since a prime can only be divided by two things (itself and 1) and 1 can only be divided by 1.

21 can be divided by 1, 3, 7, and 21 so it is not prime.

Hope this helps!

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3 years ago
What is the difference between an irrational number and an integer?? please explain!
SpyIntel [72]

Answer:

Explanation: Irrational numbers are non-terminating, recurring decimal numbers i.e, a decimal expansion that neither terminates nor becomes periodic which cannot be expressed in the form of a fraction. ... Integer is a complete entity that includes every natural number along with its negatives and zero.

Step-by-step explanation:

7 0
2 years ago
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Can someone tell me if it’s correct?
mart [117]
Yes yes it is correct
8 0
3 years ago
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