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olga nikolaevna [1]
3 years ago
14

Help please? not sure about this

Mathematics
1 answer:
zimovet [89]3 years ago
8 0

9514 1404 393

Answer:

  72 kph

Step-by-step explanation:

The first sentence tells you the speeds are proportional. So, you can write the proportion ...

  kph/mph = 120/75 = x/45

Multiplying by 45 gives x:

  x = (45)(120/75) = 72

72 kph is 45 mph.

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