Find the distance between the pair of points. Where appropriate, give an approximation to three decimal places.(
, 
) and (-
, -
)
A. 
? 4.632
B. 
? 4.532
C. 
? 1.890
D. 
? 6.199
Answer: D
Mathematics
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An acid solution has a pH of 2.3. Find the hydrogen ion concentration of this solution.
A. 5.01 mol/L [H+] B. 5.01 × 10-3 mol/L [H+] C. 2.00 × 10-12 mol/L [H+] D. 2.3 mol/L [H+]
Mathematics
Show that the set has cardinal number ?0 by establishing a one-to-one correspondence between the set of counting numbers and the given set. Be sure to show the pairing of the general terms in the sets.{3, 7, 11, 15, ...}
A.
| { | 1, | 2, | 3, | 4, | ..., | n, | ...} |
| ? | ? | ? | ? | ? |
| { | 3, | 7, | 11, | 15, | ..., | 4n + 1, | ...} |
B.
| { | 1, | 2, | 3, | 4, | ..., | n, | ...} |
| ? | ? | ? | ? | ? |
| { | 3, | 7, | 11, | 15, | ..., | 3n + 2, | ...} |
C.
| { | 1, | 2, | 3, | 4, | ..., | n, | ...} |
| ? | ? | ? | ? | ? |
| { | 3, | 7, | 11, | 15, | ..., | 3n - 2, | ...} |
D.
| { | 1, | 2, | 3, | 4, | ..., | n, | ...} |
| ? | ? | ? | ? | ? |
| { | 3, | 7, | 11, | 15, | ..., | 4n - 1, | ...} |
Mathematics
Reduce the mixed number.19
A. 19
B. 19
C. 19
D. 19
Mathematics
Find the area of the shaded region.
A. 10 B. 7.5 C. 12.5 D. 5
Mathematics