I don’t understand this can someone help it’s a practice test please show steps. The average monthly temperature T(m), in degrees Celsius, of a particular city varies according to the model T of m equals 10 times cosine of the quantity pi over 6 times m end quantity plus 5 comma where m represents the months since January. Between what months will the temperature be below 0°C?

554.4

step-by-step explanation:

44*12.6=544.4

no i do not : ( what is it?

x-3y=4

step-by-step e

5x + 3y = - 4

step-by-step explanation:

the equation of a line in standard form is

ax + by = c ( a is a positive integer and b, c are integers )

express the line first of all in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (7, - 3) and (x₂, y₂ ) = (4, - 8)

m = = -

y = - x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (4, - 8 ), then

- 8 = - + c ⇒ c = -

y = - x - ← in slope-intercept form

multiply all terms by 3 to eliminate the fractions

3y = - 5x - 4 ( add 5x to both sides )

5x + 3y = - 4 ← in standard form