Fill in the blank: 

“The measure of a/an _______ angle is greater than 90° and less than 180°.”

Look at the figure below. 

Find the value of x.

Calculate: 

$$A=\frac{15}{9}+\frac{4}{7}\times\frac{56}{6}$$  

What is the ratio of the blue part to the white part?

Fill in the blank: 

“Two complementary angles are angles that add up to _____ degrees.”

Find a rational number x such that

$$3x+\frac{5}{8}=\frac{9}{40}$$  .

Name the following angle.

Which of the following ratios is equivalent to 11 : 3?

A bag contains 99 marbles, some yellow and some red. The ratio of red marbles to yellow ones is 8 : 3. How many red marbles are there?

Look at the following figure. Find the value of x.

Rose is making cookies using a recipe in which the ratio of flour to sugar is 5 : 1.5. If she uses 15 cups of flour, how many cups of sugar does she need?

Fill in the blank:

"Given a, b > 0, if $$\frac{a}{b}=\frac{c}{d}$$  then ________."

Find the value of m such that 8 : m = 5678 : 2839.

Ashley had $500. She spent $$\frac{7}{10}$$  of her money on buying a bicycle, and a third of the remaining money on dresses. How much does she have left?