(2x – 7)(2x + 7) + (4x2 – 49) (2x + 7)(2x + 7) + 4x2 + 28x + 49
#10: Show the work that proves that Edgar's answers are correct. Upload a
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49A567C1-D84BX
#1b: Why does the standard form of the first expression only have two terms
while the standard form for the second expression has three terms? Be specific
for credit.
Your answer

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.