Questions in mathematics

Questions in mathematics

[Done] You are a school photographer taking individual and class pictures for 2 classes of 21 students each. On average, each individual picture takes 3 minutes, and a class picture takes 10 minutes. About how long should it take you to get all of the pictures?

[Done] Which is greater: 4 meters or 450 centimeters?

[Done] A rectangular lot measures 125 feet by 185 feet and is completely fenced. What is the length, in feet, of the fence?

[Done] Determine the second derivative of [tex]y = \cos x \tan x[/tex].

[Done] Write an equation for the situation: Jolene bought three blouses at one price and two blouses priced $3 below the others. The total cost was $91.50. Find the price of the blouses.

[Done] What multiplication problem equals 160?

[Done] If the measure of angle one is "2x - 9" and the measure of angle two is "27 - 4x," solve for x.

[Done] What is 189.271 in expanded form?

[Done] Write an equivalent expression for \(60 + 45\).

[Done] Thirty girls and boys have planned a picnic. There is a ratio of 3 girls to 7 boys. How many boys are there?