GIVING OUT BRAINLIEST Which statement is correct when solving the expression 5y^2-3y^2?

Add the coefficients (5 + 3).

Subtract the exponents (2 – 2).

Add the exponents (2 + 2).

Subtract the coefficients (5 – 3).

Find dy/dx using implicit differentiation ln(20+e^xy)=y

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

With these 5 geometry questions! pls 1.)quadrilateral abcd is inscribed in this circle.what is the measure of ∠a ? enter your answer in the box.°2.)quadrilateral abcd is inscribed in a circle.what is the measure of angle a? enter your answer in the box.m∠a= 3.)quadrilateral abcd is inscribed in this circle.what is the measure of angle b? enter your answer in the box.m∠b= °4.)quadrilateral abcd is inscribed in this circle.what is the measure of angle a? enter your answer in the box.°5.) quadrilateral abcd is inscribed in this circle.what is the measure of angle c? enter your answer in the box.°