Set 7x-4 and 31 equal to each other
7X-4=31
Add four to both sides
7X=27
X=3
The answer is D
Answer:
7630
Step-by-step explanation:
We have that the distance of a comet from Earth is about 7.63*10³ .
This number is given in scientific notation.
We want to write this number in standard form.
Since we are multiplying by a power of 10, we move forward three times.
Therefore in standard form:

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<em>-</em><em> </em><em>BRAINLIEST</em><em> answerer</em>
161.5 miles / 3.5 hrs = 46.143 mph
Answer:
42.194988
Step-by-step explanation:
There are 42.194988 km in 1 marathon