-np - 70 < 40
-np < 40 + 70
-np < 110
-np/-p < 110/-p
n < 110/-p
4w - 7k = 28
4w-4w-7k = 28 - 4w
-7k = 28 - 4w
-7k/-7 = 28-4w /-7
k = 28-4w/-7
Answer:
124 students
Step-by-step explanation:
Girls participating in the exercise
4/15 x 285 = 76
Boys participating in the exercise
3/20 x 320 = 48
Total students participating
76 + 48 = 124
For each of these questions, you need to find the derivative or . The slope of the tangent to these curves at the point is the value of when and . It's also important to know that if the slope of a line is , then the slope of any line normal/perpendicular to this line is .
###
The derivative is
When , we get a slope of
###
The derivative is
and so the tangent line at (1, 9) has slope
The line normal to this has slope . The point-slope and slope-intercept forms of this line are
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The derivative is
so the slope of any line tangent to the curve is 9. The line that passes through (3, 4) is