Is the following expression a polynomial?

4x + 5y

Lexi's bulletin board is 40 centimeters wide. each of her ribbons is 4 centimeters wide, and her photos are 12 centimeters wide. what combination of ribbons and photos will fit side by side with no overlap on Lexi's bulletin board.

Describe the relationship between the terms in this sequence 13,26,52,104 Then write the next three terms in this sequence

Find the measure of ∠D if ∠A = 5 2 x + 30 ∠B = 7 2 x + 40 ∠C = 9 2 x + 10 ∠D = 5 2 x + 20

What is the answer to this math problem 4x-3=-x-8

a file is 284 megabytes is being downloaded. If the download is 15.3% complete how many megabytes have been downloaded

Jessica says to round 763400 to the nearest tenth he will round 2 770000 hundred is Right explain

Given A = {a, e, i, o, u} and B = {a, l, g, e, b, r}, find A ∪ B. { } {a, e} {a, b, e, g, i, l, o, r, u}

What type of stock received an equal part of the profit on each share to be - distributed after all is it obligations of a company have been satisfied

Quando o Ângulo de elevação do sol e de 70 a sombra de um edifício medes 20 cm calcule a altura do edifício dados : sen 70=0,93 cos 70=0,3 e tg70=2,74?

Mike has 2 cases of video games with the same number of games in each case. he gives 4 games to his brother. ricardo has 10 games left. how many video games were in each case?