Hi !
The volume of the cube is :
18 × 18 × 18= 5 832 mm³
The answer is D.
1. It is a triangular prism
Sorry can’t answer
Step by step explanation
Tara's Bedroom: A = lw
A = (9)(8)
A = 72 ft²
Jody's Bedroom: A = lw
A = (7)(10)
A = 70 ft²
Tara's bedroom has the greater area than Jody's bedroom.
Answer:
- 6 2/3 qt 80%
- 13 1/3 qt 20%
Step-by-step explanation:
It is often convenient to solve a mixture problem by letting a variable represent the quantity of the higher-concentration contributor to the mix.
__
We can let x represent the number of quarts of 80% solution needed. Then (20-x) is the number of quarts of 20% solution needed. The amount of salt in the final mix is ...
0.80x +0.20(20-x) = 0.40(20)
0.60x = 0.20(20) . . . . . . . . subtract 0.20(20) and simplify
x = 20/3 = 6 2/3 . . . . . . . . . divide by 0.60; quarts of 80% solution
(20 -x) = 13 1/3 . . . . . . . . . . amount of 20% solution needed
The teacher should mix 6 2/3 quarts of 80% solution with 13 1/3 quarts of 20% solution.
