Solve the problem using determinants.Barges from ports X and Y went to cities A and B. X sent 28 barges and Y sent 8. City A received 20 barges and B received 16. Shipping costs $220 from X to A, $300 from X to B, $400 from Y to A, and $180 from Y to B. $8240 was spent. How many barges went where?
A. 20 from X to A; 8 from X to B; 0 from Y to A; 8 from Y to B
B. 18 from X to A; 10 from X to B; 2 from Y to A; 6 from Y to B
C. 16 from X to A; 16 from X to B; 4 from Y to A; 4 from Y to B
D. 14 from X to A; 14 from X to B; 6 from Y to A; 2 from Y to B
Answer: A
Mathematics
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Multiply.(4
- 7
)2
A. 16x - 56
+ 49y
B. 16x - 56xy + 49y
C. 16x + 28
+ 49y
D. 16x + 49y
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Use the strategy of grouping to 10 to find the sum of the numbers.4, 7, 8, 6, 5, 5, 3
A. 30 B. 20 C. 28 D. 38
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Write an equivalent expression without a negative exponent.x2y-4
A. 
B. 
C. 
D. -4x2y
Mathematics
Let f be the function defined by
Find 
, 
, and 
.
__________
__________
__________
?
What will be an ideal response?
Mathematics