Evaluate the expression for x = -2, y = 3, z = -4.4x - y2
A. 1
B. -17
C. 2
D. -14
Answer: B
Mathematics
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Solve.Find the exact value of the perimeter of the rectangle below. 
L = 104 + 
, W = 104 - 
A. 4
+ 416
B. 4
C. 416
D. 208
Mathematics
The chemical acidity of a solution is measured in units of pH: 
where 
is the hydrogen ion concentration in the solution. If a sample of rain has a pH of 3.4, how many times higher is its 
than pure water's, which has a pH of 7?
a. 
b. 
c. 7
d. 
e. 
Mathematics
Multiply.
A. x2 + 
x - 
B. x2 - 
x + 
C. x2 + 
x - 
D. x2 + 
x + 
Mathematics
Select the order for the following matrix.
?
?
A. 4 × 3 B. 4 × 2 C. 4 × 4 D. 3 × 3 E. 3 × 4
Mathematics