2/5 divided by 5/9

(just checking if I'm right)

Liam is making barbecue ribs over a fire. The internal temperature of the ribs when he starts cooking is 40°F. During each hour of cooking, the internal temperature will increase by 25%. The ribs are safe to eat when they reach 165°F.

If A = {1, 2, 3} and B = {1, 2, 3, 4, 5, 6, 7, 8} then A ∪ B

An obtuse angle measures 180 degrees. A) always, B) sometimes, C) never

How many significant figures does 0.0102 have?

Sam and ralph were paid $136 to pressure wash a deck. sam worked 5 hours and ralph worked 3.5 hours. how many hours did they work total?

A square is cut into two congruent triangles by drawing the diagonal between two corners. If the area of each triangle is 162 cm, what is the length of the side of the square?

Suppose ΔXYZ is given, and you want to construct ΔABC so that the triangles are congruent. Which constructions would guarantee that ΔXYZ ≅ ΔABC? Check all that apply.

What property is = x+2-2

A hair dye is made by blending 7% hydrogen peroxide solution and a 4% hydrogen peroxide solution. How many milliliter of each are used to make a 300 mL solution that is 5% hydrogen peroxide?

Explain why a change from 20 to 40 is a 100% increase, but a change from 40 to 20 is a 50% decrease. Increasing 20 to 40 is the same as increasing 20 by c. So, it is a 100% increase. Decreasing 40 to 20 is the same as decreasing 40 by one-half of c.