How do you write an interger to represent the total change in temperature?
2006-09-19 10:45:28 · 5 answers · asked by mccoy 1 in Science & Mathematics ➔ Mathematics
-5*7= -35
2006-09-19 11:28:19 · answer #1 · answered by Anonymous · 0⤊ 0⤋
plot a graph of with the temperature on the y axis and the time on the x-axis (or vice versa) 2-3 points is enough to find out the slope/gradient of the line.
gradient=(y2-y)/(x2-x)
you will find the vale of the gradinet to be= -5
Work out an equation using.
y=mx+c
where:
y= temperature
x=time
m=gradient/slope
c=constant
The value of the constant c can be found by inserting the x and y values of any given point along the line into the above equation.
And finally rewrite the equation as
you will find that c=75
f(x)=mx+c
total change of temperature is=inverse of f(7)= f'(7)=-5
It is now up to you to work out the values. Follow this principle and you will get the answer
Note
From the value of c, it can be seen the the highest realistic y value is 75.
2006-09-19 19:33:20 · answer #2 · answered by blaze 2 · 0⤊ 0⤋
The same way you write the answer to 5 x 7 =
If you have been introduced to negative numbers: -5x7=
2006-09-19 17:52:55 · answer #3 · answered by Helmut 7 · 0⤊ 0⤋
7(-5)=-35*
2006-09-19 17:47:19 · answer #4 · answered by raj 7 · 1⤊ 2⤋
-35 (!)
2006-09-19 17:47:57 · answer #5 · answered by Anonymous · 1⤊ 2⤋