Write an algebraic equation and use it to solve the problem.A chemist needs 9 liters of a 50% salt solution. All she has available is a 20% salt solution and a 70% salt solution. How much of each of the two solutions should she mix to obtain her desired solution?
A. 4.5 liters of the 20% solution; 4.5 liters of the 70% solution
B. 1.8 liters of the 20% solution; 7.2 liters of the 70% solution
C. 2.7 liters of the 20% solution; 6.3 liters of the 70% solution
D. 3.6 liters of the 20% solution; 5.4 liters of the 70% solution
Answer: D
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(1 + t)3/2i + 
(1 - t)3/2j + 
tk
A. a = 
T
B. a = 
N
C. a = 
N
D. a = T + 
N
Given that the pair of triangles is similar, find the length of the side labeled n.
A. 20 B. 25 C. 19 D. 12
State the degree of the polynomial and whether it is a monomial, a binomial, or a trinomial.-10x + 2
A. binomial, degree 2 B. binomial, degree 0 C. binomial, degree 1 D. monomial, degree -10
Determine the real solutions to the system of nonlinear equations.ln x = 3 ln y3x = 27y
A. (9, 
)
B. (
, 9)
C. (3
, 
)
D. (
, 3
)