5
First order equations include linear equations. In the coordinate system, the linear equations are defined for lines. A linear equation in one variable is one in which there is a homogeneous variable of degree 1 (i.e., only one variable). Multiple variables may be present in a linear equation. Linear equations in two variables, for example, are used when a linear equation contains two variables. Examples of linear equations include 2x - 3 = 0, 2y = 8, m + 1 = 0, x/2 = 3, and 3x - y + z = 3.
Total books borrowed = 8+4 = 12
No. of non - fiction books = 7
No. of fiction books = 12 -7
= 5
To learn more about linear equation , refer to brainly.com/question/26310043
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D
7•4 =28, -5•0 =0... 28+0=28
Answer:
Option C and D!
Step-by-step explanation:
When 9 is placed in the box after 7, we get:-
7 ÷ 9 = 
which is correct!
<u>7 ÷ 9 can also be written as </u><u>. So, this Option is right since the equation is correct when 9 is placed in the box!</u>
- Option D is also correct because,
When we place 9 in the box before 
, we get:-
9 ÷ = 81
9 ÷ equals 9 x 9 (take the reciprocal of )
<u>9 x 9 equals 81 which means the equation is correct when 9 is placed in the box!</u>
P=250
that would be (250×$855)-$6780
=$213750-$6780
=$206970
the CEO amount would be 15% of $206970
=$31045.5
