Answer:
find derivative of function
sub in x value of point to find gradient of tangent
put gradient into y=(gradient)x+c
Sub in point and solve for c
you have found the equation of the tangent.
Answer:
35
Step-by-step explanation:
Steps
1. 5x + 105 = 8x because you distributed the 5
2. 105 = 3x because you subtract the 5x on both sides
3. 105/3 = x because you divide the 3 and 105/3 is 35
Answer:
4/4 = 1
Step-by-step explanation:
If the circumference of a circle is changed from 9 cm to 3 cm, then the diameter decreases by a factor of 3.
The external angle is equal to the sum of the opposite internal angles.
.. 6x +1 = (2x +10) +79
.. 4x = 88 . . . . . . . . . . . . . subtract 2x+1
.. x = 22