Add or subtract as indicated. Make sure that your answer is reasonable by estimating first.9.211 - 1.217
A. -7.994
B. 10.428
C. 7.994
D. 8.094
Answer: C
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The formula H = 1.35gs can be used to determine how much oxygen is in the hemoglobin of a blood sample where H represent the mL of oxygen in the hemoglobin from 100 mL of whole blood, g represents the number of grams of hemoglobin in the whole blood, and s represents the oxygen concentration of the hemoglobin in decimal form. A blood test from a 100 mL sample reveals that it contains 12 g of hemoglobin and the hemoglobin is 91% oxygen. Determine how much oxygen is in this sample.
A. 14.95 mL B. 1485 mL C. 1.495 mL D. 148.5 mL
Use the given triangles to evaluate the expression. Rationalize all denominators. 
cot 60° - cos 45°
A. 
B. 
C. 
D. 
Subtract and simplify.
- 
A. 
B. - 
C. - 
D. 
Solve the equation using the quadratic formula.4x2 + 1 = 3x
A. 
B. 
C. 
D. 