Questions in mathematics

Questions in mathematics

[Done] How many corners are in a rectangle, and how many flat faces does it have?

[Done] Anita tosses 3 coins. What is the probability that all the coins will land tails up?

[Done] If \( a + b = 6 \) and \( a - b = 4 \), what is the value of \( 2a + 3b \)?

[Done] How do I figure out what \( \frac{5550}{1000} \) is?

[Done] Find the surface area of a rectangular prism with a length of 6.9 mm, a width of 8.2 mm, and a height of 14 mm.

[Done] How many times does 6 go into 312?

[Done] If [tex]\cos x = \frac{1}{12}[/tex] and [tex]\sin x > 0[/tex], find [tex]\tan 2x[/tex].

[Done] How many [tex]\frac{1}{10}[/tex] are in 3?

[Done] Solve the quadratic equation by completing the square: \[ 4x^2 - 28x + 49 = 5 \]

[Done] Jim has a box in the shape of a rectangular prism. The area of the base of the box is 48 square inches. The volume of the box is 144 cubic inches. Let \( h \) be the height of Jim's box. Write and solve an equation you can use to find the height of Jim's box.