Could you help me solve the exercises in the photograph? They are number 20 - 21 - 22. I write here the translation of the delivery: 20) Among the following systems in the unknowns x and y indicate those of first degree

21) Indicate the degree of each of the following systems.

22) Complete the following systems by writing an equation in the unknowns x and y in such a way that the system formed by the two equations has the degree indicated on the side.
- The first system must be of the second degree
- The second system must be of the first degree.

Thank you and happy New Year!

560

step-by-step explanation:

giggidy

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33

answer: i dont know but if you try hard you will get it right : )

step-by-step explanation: