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Lubov Fominskaja [6]
4 years ago
12

What is n? -4n - 5 = -3n + 4

Mathematics
1 answer:
bija089 [108]4 years ago
5 0

Move n terms on one side and other terms on the other side. Note that by moving we are essentially subtracting and adding to both sides so the prefix of a term changes from - to + or from + to -.

-4n-5=-3n+4 \\-4n+3n=4+5 \\-n=9 \\n=-9

Hope this helps.

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1meter=100 centimeters
scoundrel [369]

Answer:

Yes,1metre=100centimeters

4 0
4 years ago
At a local tech school, there are 6 math classes and each class has 27 students. The school pays for the book and calculators fo
umka21 [38]

The first step to solve this problem, you have to compute first for the total number of students:

6 math classes x 27 students per class = 162 students

Now, you know that there are 162 students all in all in the school. The next step is to compute for the total cost of both the book and the calculator per student.

$45.10 (Book) + $57.80 (Calculator) = $102.90 (total cost per student)

To compute for the total cost that the school will pay, you have to multiply the total cost per student to the number of students in school.

$102.90 per student x 162 students = $16,669.80

Therefore, the total cost the school will pay is $16,669.80.

6 0
3 years ago
Which is true<br><br> 1) 31^3 12^10
aev [14]

Answer:

1,844,580,200,000,000 = 1.8445802×10^15

Step-by-step explanation:

31^3 x 12^10

31^3 = 31 x 31 x 31

12^10 = 12 x 12 x 12 x 12 x 12 x 12 x 12 x 12 x 12 x 12

31^3 = 29791

12^10 = 61917364224

29791 x 61917364224 = 1,844,580,200,000,000 = 1.8445802×10^15

8 0
3 years ago
Read 2 more answers
Simplify 10 - [14 = (3 + 4) · 2]+3
lora16 [44]

Answer:

There is a typo near the equal sign.

There can be two different answers if we think that = sign as + or -.

First way: Making = as +

=> 10 - [14 + (3+4) x 2] +3

=> 10 - [14 + 7 x 2] + 3

=> 10 - [14 + 14] + 3

=> 10 - 28 + 3

=> 10 + 3 - 28

=> 13 - 28

=> -15

=> So, -15 is the answer if we consider "=" sign as "+" sign.

Second way: Making = as -

=> 10 - [14 - (3+4) x 2] + 3

=> 10 - [14 - 7 x 2] + 3

=> 10 - [14 - 14] + 3

=> 10 - 0 + 3

=> 10 + 3

=> 13

=> So, 13 is the answer if we consider "=" sign as "-" sign.

5 0
3 years ago
Ian hung a square mirror in his locker that measures 6 inches on each side. What is the perimeter of the mirror?
Dennis_Churaev [7]

All sides of a square are equal in length and there are four sides to a square so the equation would be 6*4 or 6+6+6+6, which equals 24.

6 0
3 years ago
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