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EastWind [94]
3 years ago
7

What is the definition of order of operations

Mathematics
1 answer:
Reil [10]3 years ago
4 0
Order of operations : A collection of rules that define which procedures to perform first in order to evaluate a given mathematical expression.
(PEMDAS) -- parenthesis, exponents, multiplication/division, addition/subtraction.
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Two simple questions
frutty [35]
Oh i love these x=4,y=9
3 0
3 years ago
Solve the system by the addition method <br> 4x=3y-8<br> -16x+4y=32
butalik [34]
4x = 3y - 8
 4         4
  x = ³/₄y - 2

                  -16x + 4y = 32
       -16(³/₄y - 2) + 4y = 32
-16(³/₄y) + 16(2) + 4y = 32
          -12y + 32 + 4y = 32
          -12y + 4y + 32 = 32
                    -8y + 32 = 32
                           - 32  - 32
                            -8y = 0
                             -8    -8
                               y = 0
x = ³/₄y - 2
x = ³/₄(0) - 2
x = 0 - 2
x = -2

(x, y) = (-2, 0)
6 0
3 years ago
There are four times as many girls in a chemistry class as there are boys. if there are 45 students in the class, how many boys
puteri [66]
In order to determine the number of boys in the class, first, we set-up an algebraic equation. Let x = number of boys in the class. The equation is then: x + 4x = 45. This is because the number of girls is 4 times greater than the number of boys. After solving the algebraic equation, it is then determined that there are 9 boys in the Chemistry class.   
4 0
3 years ago
Given that (8,-1) is on the graph of f(x), find
Nikolay [14]

Answer:

(-12, -1)

Step-by-step explanation:

(8, -1) => (-2/3x, f(-2/3x))

therefore

-2/3x = 8

x = 8 *-3/2

x = -12

f(-2/3x) = -1

therefore, the corresponding point is:

(-12,-1)

5 0
2 years ago
.What is the value of the expression below when x=9? Enter the answer as NUMBER only?<br> 1/3 x^2+4
belka [17]

Step-by-step explanation:

<u>1</u><u> </u>*9^2 + 4

3

<u>1</u><u> </u>* 81 + 4

3

<u>1</u><u> </u>* 85

3

<u>85</u>

3

=28

5 0
3 years ago
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