What it is telling me to do is use compatible numbers to estimate each percent and the numbers are 19% of 30 how do I do that

3 lb 9oz + 5lb 10 oz.

I have a baseball card. Its present value is 80% more than I paid for it. My friend offers me $27 for the card, which is only 2/3 of the card's present value. How much did I pay for the card?

Kailey baked 36 muffins for the bake sale. if 2/3 of the muffins were blueberry, how many actual muffins were NOT blueberry?

Simplify: 3log3 (-5) = A. - 5 B. 3 C. 9 D. undefined

Which statements must be true about the reflection of ΔXYZ across Line M N? Select three options. M∠X'Z'Y' = 90° m∠MCY = 90° XX' ≅ YY' BZ' ≅ BZ XY || X'Y

A golf ball is selected at random from a golf bag. If the golf bag contains 3 brown balls, 8 red balls, and 9 yellow balls, find the probability of the following event. The golf ball is brown or red.

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