Show me the steps in finding the answer to the question 2/3(5x4)/3+6/7

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

How many real-number solutions does the equation have? -4x^2 + 10x + 6 = 0 a. no solutions b. two solutions c. infinitely many solutions d. one solution

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how