MATHEMATICS HIGH SCHOOL

Evaluate the expression when m=4 and n=31.
n-3m

Answers

Answer 1
Answer:

Answer:

19

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Step-by-step explanation:

Step 1: Define

Identify

m = 4

n = 31

n - 3m

Step 2: Evaluate

  1. Substitute in variables:                                                                                     31 - 3(4)
  2. Multiply:                                                                                                             31 - 12
  3. Subtract:                                                                                                            19
Answer 2
Answer:

Hi there!  

»»————-　★　————-««

I believe your answer is:  

19

»»————-　★　————-««  

Here’s why:

⸻⸻⸻⸻

\boxed{\text{Calculating the Answer...}}\n\nn-3m;\text{ } m= 4, n = 31\n---------\n\rightarrow 31-3(4)\n\n\rightarrow 31 - 12\n\n\rightarrow \boxed{19}

⸻⸻⸻⸻

»»————-　★　————-««  

Hope this helps you. I apologize if it’s incorrect.  

Related Questions

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Jack's mother gave him 50 chocolates to give to his friends at his birthday party. He gave 3 chocolates to each of his friends and still had 2 chocolates left. Write an equation to determine the number of friends (x) at Jack's party.

What is the value of the Y coordinate of the solution to the system of equations x-2y=1 and x+4y=7?

Answers

\left\{\begin{array}{ccc}x-2y=1\nx+4y=7&/\cdot(-1)\end{array}\right\n\n+\left\{\begin{array}{ccc}x-2y=1\n-x-4y=-7\end{array}\right\n-----------\n.\ \ \ \ \ \ \ \ \ -6y=-6\ \ \ \ \ /:(-6)\n.\ \ \ \ \ \ \ \ \ \ \ \ \ \ y=1\n\nx-2\cdot1=1\nx-2=1\nx=1+2\nx=3\n\nAnswer:\n\left\{\begin{array}{ccc}x=3\ny=1\end{array}\right

Answer:

Step-by-step explanation:

   x - 2y = 1

+ (-x - 4y = -7)

_______________________

                -6y = -6

                 -6     -6

We divide -6 both sides of the equation in order to get our answer.

y = 1

I need help on this please

Answers

Answer:

I think 16

Step-by-step explanation:

Rudy ran 12 miles in 1 1/2 hours. if you divied 12 by 3 to see how many miles she runs in 1/2 hour. it is 4 and 12+4=16 she will run 16miles in 2 hours.
It would be 16 for sure

Select the equation of the line that passes through the point (2, 6) and is perpendicular to the line x = 4.

Answers

Perpendicular lines have opposite reciprocal slopes. 

x = 4 has a slope of undefined since it is a vertical line.

It's undefined because 1/0 = undefined. We can't divide by 0.

The opposite reciprical of 1/0 is -0/1, which equals to 0.

Any line with a slope of 0 is:

y = 0x + b
y = b

This line goes through the point of (2, 6).

Since the equation starts with y = something, we have to use the y-value of the point it goes through. The point is in the form of (x, y).

6 is in the y-value.

The equation of the perpendicular line is y = 6.

There were 28 boys on the boy's basketball team and 16 girls on the girl's basketball team last year. This year the number of boys decreased by 8% but the number of girls increased by 19%. Was there an increase or decrease in overall participation?

Answers

There is an increase in total participants.

What is unitary method?

The unitarymethod is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.

Given:

number of boys = 28

Number of girls = 16

Total participants = 28 + 16 = 44

Now, there is decrease in number of boys by 8%

= 28- 8%  x 28

=28- 8/100 x 28

=28 - 0.08*28

=28 -2.24

= 25.76

and, there is 19% increase in number of girls

=16 + 0.19 x 16

=16 + 3.04

=19.04

So, total participants = 25.76 + 19.04

= 44.8

Hence, there is an increase in total participants.

Learn more about unitarymethod here:

brainly.com/question/22056199

#SPJ2
I’m pretty sure it decreased, apologies if I got this wrong

The sum of participants last year was 44 students, but this year was only 37.80 participants.

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Answers

miles left to cover on 2nd day- 592-187=405 miles
to cover 405 miles, 405/52=7.78 hours needed=7h 47 mins

One year British columbia had 6149 police officers and a total population of 3282000 Nova scotia had 1542 police officers and a total population of 900000 which province had the greater number of people per police officer

Answers

Answer: Nova Scotia

Step-by-step explanation:

British Columbia people per police officer:

= Population number / no. Of policemen

= 3,282,000/6,149

= 534 people per policeman

Nova Scotia

= 900,000 / 1,542

= 584 people per policeman
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