The distance between two cities is 145 miles. A truck can cover this distance in 2.5 hours. The speed of a car is 1.5 times fast
1 answer:
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The geometric mean is 
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The correct answer is: [B]: " 
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Consider choice [A]:
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= 2 ; "2 ≠ -2" ; so we can rule out: "Choice [A]" .
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Consider choice [B]: ;
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;
= "-2" ; Yes!
→ Let us proceed with the final answer choice ;
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Consider choice [C]:
;
= ;
= 2 ; "2 ≠ -2" ; so we can rule out: "Choice [C]" .
__________________________________________________________
The correct answer is: [B]: " " .
__________________________________________________________
__________________________________________________________
Consider choice [A]:
=
= 2 ; "2 ≠ -2" ; so we can rule out: "Choice [A]" .
__________________________________________________________
Consider choice [B]:
=
= "-2" ; Yes!
→ Let us proceed with the final answer choice ;
__________________________________________________________
Consider choice [C]:
=
= 2 ; "2 ≠ -2" ; so we can rule out: "Choice [C]" .
__________________________________________________________
The correct answer is: [B]: "
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