3a+5a+4a=?

combine the like terms.

11) Adam can mop a warehouse in ten hours. Wilbur can mop the same warehouse in nine hours. If they worked together how long would it take them? Be sure to respond in a complete sentence that explains your answer in relation to the question.

The length of a rectangle is equal to three times it's width. If the perimeter is equal to 240 feet, what is the length of the rectangle?

Mai, Clare, and Noah are making signs to advertise the school dance. It takes Mai 6 minutes to complete a sign, it takes Clare 8 minutes to complete a sign, and it takes Noah 5 minutes to complete a sign.

Mrs. rifkin had 84 oranges. 24 of her oranges were rotten; the rest were either ripe or unripe. there were 18 more ripe oranges than unripe oranges.

Marci has45 red buttns and 60 yellow butto a she wants to use all of the butt s a d divide each color equally into boxes what is the greatest number of boxes marci can use to divide the buttons

The engine in Paul's weed whacker uses an oil-gas mixture. The owner's manual recommends mixing the oil and gasoline together, using the size of the oil container to guide how much of each to use. It states to use 1/8 part oil with 4 parts gasoline.

Use the net to find the surface area of the square pyramid. A) 385 ft2 B) 473 ft2 C) 526 ft2 D) 568 ft2

Matrix L is a 1 ⨯ 8 matrix, matrix M is a 8 ⨯ 8 matrix, matrix N is a 1 ⨯ 1 matrix, and matrix P is a 8 ⨯ 1 matrix. Find the dimensions of the sums below, if they exist. (If an answer does not exist, enter DNE.

Simplify the expression. 4 + 18 : 2 - 1 20 22 12 10

What are the next 2 numbers in this geometric sequence -512, - 128, - 32