Questions in mathematics

Questions in mathematics

[Answered] The ratio of red collars to black collars sold at one store is 9 to 10. In one month, 30 black collars were sold. Is 57 a reasonable number for the total number of red and black collars sold that month? Explain.

[Answered] At the veterinarian's office, 4 animals out of every 5 seen were cats. A total of 35 animals were seen. a. How many cats were seen? b. The ratio of male cats seen was 6:7. How many of the cats seen were males?

[Answered] How many different (non-congruent) triangles have integer side lengths and a perimeter of 2014?

[Answered] Your doctor prescribes you to take 400 milligrams of medicine every 8 hours. How many ounces of medicine do you take in a day?

[Answered] Skateboard Revenue: A skateboard shop sells about 50 skateboards per week for the price advertised. For each $1 decrease in price, about 1 more skateboard per week is sold. The shop's revenue can be modeled by: \[ y = (70 - x)(50 + x) \] Use vertex form to find how the shop can maximize weekly revenue.

[Answered] Rick has 12 action, 15 comedy, and 9 drama DVDs. 1. Find the ratio of action DVDs to the total number of DVDs. 2. Explain the meaning of this ratio. How would I do this problem?

[Answered] 2.375 divided by 0.05

[Answered] Carlos is walking on a moving walkway. His speed is given by the function \( C(x) = 3x^2 + 3x - 4 \), and the speed of the walkway is \( W(x) = x^2 - 4x + 7 \). 20. What is his total speed as he walks along the moving walkway? 21. Carlos turned around because he left his cell phone at a restaurant. What was his speed as he walked against the moving walkway?

[Answered] Hot dogs come in packages of 6, and hot dog buns come in packages of 8. Antonio will buy the same number of hot dogs as hot dog buns. How many hot dogs could he buy?

[Answered] The bottom of a ladder must be placed 5 feet from a building. The ladder is 14 feet long. How far above the ground does the ladder touch the wall?