Answer:

Step-by-step explanation:

Collect like terms
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Add the numbers
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You would multiply 29.50 x 0.07 which would give you 2.065. The tax amount would be $2.07. The total after tax would be $31.57
Distance = Average speed * Time = 48*10 = 480 miles
So, they drove for 480 miles
ANSWER
By simplifying the left hand side using the Pythagorean Identity.
EXPLANATION
The given identity is

Take the left hand side and simplify to get the right hand side.

Collect LCM for the denominators.

Recall the Pythagorean Identity.

This implies that:

We substitute this to get,

