Solve the system by elimination.
What will be an ideal response?
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Solve the problem.Under standard conditions, molecules of a gas collide billions of times per second. If each molecule has diameter t, the average distance between collisions is given by 
where n, the volume density of the gas, is a constant. Find 
.
A. 
= 
B. 
= - 
C. 
= 
D. 
= - 
Solve using matrices.A chemist has prepared two acid solutions, one which is 4% acid by volume and the other which is 11% acid. How many cubic centimeters of each should the chemist mix together to obtain 50 cm3 of 
-acid solution?
A. 4%-solution: 3.4 cm3; 11%-solution: 46.6 cm3 B. 4%-solution: 20 cm3; 11%-solution: 20 cm3 C. 4%-solution: 30 cm3; 11%-solution: 20 cm3 D. 4%-solution: 20 cm3; 11%-solution: 30 cm3
Determine whether the given monomials are like terms. -3x and 7y
A. Yes B. No
Add or subtract as indicated. You will need to simplify terms to identify like radicals.7
- 7
A. 56
B. -56x
C. -14x
D. -14