Questions in mathematics

Questions in mathematics

[Done] Solve the equation: 8k - 1 = 15

[Done] How do you convert 0.39 into a fraction?

[Done] If [tex]a = b + 2[/tex], then what is [tex](b - a)^4[/tex]?

[Done] A bicycle wheel travels about 82 inches in one full rotation. What is the diameter of the wheel, to the nearest inch? (Use 3.14 for \(\pi\).)

[Done] Find the sum of [tex]\frac{3b}{b+2}[/tex] and [tex]\frac{12}{b+2}[/tex], and express it in simplest form.

[Done] Simplify the following expressions: 1. [tex]2(5x - 3) - (2x + 4)[/tex] 2. [tex]24x - 12y + \frac{40}{4}[/tex] 3. [tex](2x)(3y) + 2(-xy)[/tex]

[Done] How do I solve this infinite geometric series? \[ \frac{64}{25} - \frac{16}{5} + 4 - 5 \]

[Done] Lauren bought 20 ounces of sliced ham. She used \(\frac{3}{4}\) of the ham to make sandwiches for her friends and \(\frac{1}{5}\) of the ham in an omelet. How many ounces of ham were left? 1. What is the hidden question? 2. What is the solution?

[Done] How do I change a trapezoid into a rectangle?

[Done] Mary is making a piñata that has a ball-like shape. The piñata has a surface area of 40 square feet. Use the formula for the surface area of a sphere: [tex]S = 4\pi r^2[/tex] to find the radius of the piñata. Round your answer to the nearest hundredth.