Using our congruence statement

, we know that corresponding angles match, so that means that

. We know that

, so that means that

. This gives us the equation
<em /><em /><em>m</em> + 45 = 131
Subtract 45 from both sides to cancel it and we have
<em>m</em> = 86.
Answer:
When we write numbers in scientific notation, we must put the first non-zero digit ahead of the decimal. In this case, the decimal would be behind the 3. Because we moved the decimal places four times to the right, our exponent will be 4. Thus,
3.00 x 10⁻⁴
Answer:
486
Step-by-step explanation:
you can find out the unknown side by pythagoras theorem