Answer:
-
Step-by-step explanation:
Differentiate implicitly using the product rule
x. + y.1 = 0 ( subtract y from both sides )
x . = - y ( divide both sides by x )
= -
At (- 4, - 1), then
= - = -
I believe it is 25.
15/24=x/40
cross multiply to get
15*40=24x
600=24x
x=25
To solve this problem you would add 3 and 7 together to get 10. Next you would divide 150 by 10 to get 15. After you have done that you would multiply 7 by 15 to get 105. There will be 105 pencils sold.