21 is 75%, percent of what number?

Express your answer in Scientific Notation. 4.5*10^4 + 280,000 (4.5 times 10 to the 4th, plus 280,000)

What is the answer for 9+10x=9?

A bag contains 5 red marbles, 6 blue marbles and 4 green marbles. Susie selects a marble and returns it to the bag before selecting another marble.

Prove that if a transversal is perpendicular to one of the two parallel lines, it it parallel to the other line

Ethan says there are a total of 700 hundreds in the number 7,000,000. Is Ethan correct? A. Yes, Ethan is correct. B. No, Ethan is not correct. There are exactly 700 ten thousands in 7,000,000. C. No, Ethan is not correct.

Which shows a way to take apart 8? 9-9=0 or 9-8=1 or 8-1=7 or 8+8=16 which one

4 batches of punch each batch has 16 fluid oz lemon juice and 4 pints of orange juice if each serving is 1 cup how many servings did it make all together

Apply the law of syllogism to write a new statement based on the following: A → B: If it rains, then football practice will be canceled. B → C: If football practice is canceled, then Patrick will go to the cinema.

If tan 0 = - 3/8 which expression is equivalent to cot0?

How many lines of symmetry does the letter R have?