What is 10 times 10 with an exponent of negative 1 times negative 2 with an exponent of negative 5?

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Plz hurry evaluate the expression a+b where a=8 and b=19

If you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain.