Answer:
The answer is B) 9 faces, 7 rectangles, and 2 triangles
Step-by-step explanation:
I took the test and got it correct
Let x represent the number of liters of 50% acid Theresa puts into the mix. The the number of liters of 30% acid will be (420-x). The total amount of acid in the final solution will be ...
0.50x + 0.30(420-x) = 0.45(420)
0.20x + 126 = 189 . . . . . . . . . . . . . . . simplify
0.20x = 63 . . . . . . . . . . . . . . . . . . . . . subtract 126
x = 63/0.20 = 315 . . . . . . . . . . . . . . . liters of 50% solution
(420-x) = 420-315 = 105 . . . . . . . . . liters of 30% solution
Theresa should mix ...
105 liters of 30% solution
315 liters of 50% solution
Answer:
<em>56 ounces </em>= <em>7 cups.</em>
Step-by-step explanation:
Graph the equations and locate the intersection.
(-3,6)
Answer:
as shown in the attached file.
Step-by-step explanation:
The detailed, step by step explanation and application of integral with appropriate substitution to get the expression for the time of extinction is as shown in the attachment.