2x^2-5xy-y^3 if x=-3, and y=-2
2(-3)^2- 5(-3)(-2) -(-2)^3
=2(9) - 5(6) - (-8)
= 18 - 30 + 8
= -4
Answer:
x = 
Step-by-step explanation:
From the figure attached,
ΔABC ~ ΔADE
Therefore, by the property of similar triangles corresponding sides of the given triangles will be proportional.



x = 
x = 
136 + x = 189
-136 -136
x = 53
Arthur must earn $53 in the next week to buy the new coat.
Answer:
37.5 g
Step-by-step explanation:
The final solution will contain 3% × 100 g = 3 g of solute. This amount of solute will be found in w grams of 8% solution, where ...
... 3 = 0.08 × w
... 3/0.08 = w = 37.5 . . . . . grams of 8% solution