Solve. Remember to insert units when writing your answer.In a lab experiment 700 ml of salt water were added to 1.67 L of water. Later, 230 ml of the solution were drained off. How much of the solution still remains?
A. 637 ml
B. 2,140 ml
C. 549.7 ml
D. 2,386.7 ml
Answer: B
Mathematics
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Use the shell method to find the volume of the solid generated by revolving the shaded region about the indicated axis.About the y-axisx = 4
A. 20? B. 48? C. 40? D. 32?
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Simplify.-|-2|
A. 2 B. -2 C. 1 D. -1
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Find the standard-form equation for an ellipse which satisfies the given conditions.An ellipse with y-intercepts ±6; foci at 
and 
.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
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Solve the system.y = 
2x - y = -9
A. 
B. 
C. 
D. 
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