Since lines a and c are parallel and we are given that c is perpendicular to b, we can infer that b is also perpendicular to a.
So, a and b are perpendicular, the angle formed by these lines should be 90.
Hence, angle 2 is 90.
Hope this helps :)
7 because 6 and 3/4 is written out as 6.75 and when rounding you look at the number after the decimal and if its 5 and above you round up the number youre about to estimate and if its 5 and below you round down.
Answer:

60+4
Step-by-step explanation:
<em>Order of Operations</em>
<em>Parenthesis</em>
<em>Exponent</em>
<em>Multiply</em>
<em>Divide</em>
<em>Add</em>
<em>Subtract</em>
<em>First, do exponent.</em>
<em>
</em>
<em>Standard form of 64 is: 60+4</em>
<em>64 is the correct answer.</em>
<em>60+4 is the correct answer.</em>
Step-by-step explanation:
x : (x + 3) = 2 : 3



