Solve the problem.Barges from ports X and Y went to cities A and B. X sent 30 barges and Y sent 8. City A received 21 barges and B received 17. Shipping costs $220 from X to A, $300 from X to B, $400 from Y to A, and $180 from Y to B. $8760 was spent. How many barges went where?
A. 17 from X to A, 17 from X to B, 4 from Y to A, and 4 from Y to B
B. 15 from X to A, 15 from X to B, 6 from Y to A, and 2 from Y to B
C. 19 from X to A, 11 from X to B, 2 from Y to A, and 6 from Y to B
D. 21 from X to A, 9 from X to B, 0 from Y to A, and 8 from Y to B
Answer: D
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Solve the problem.A ball dropped from the top of a building has a height of s = 256 - 16t2 meters after t seconds. How long does it take the ball to reach the ground? What is the ball's velocity at the moment of impact?
A. 8 sec, -64 m/sec B. 4 sec, -128 m/sec C. 16 sec, -512 m/sec D. 4 sec, 128 m/sec
Round the number as indicated.578 to the nearest hundred
A. 590 B. 700 C. 500 D. 600
Find any numbers for which the rational expression is undefined.
A. x = -7 B. x = 0 C. none D. x = 7
Is the figure Saccheri quadrilateral?
?
?
A. no B. yes