What is the area of this quadrilateral? 41
31
10
10 ft
31
4 ft
A. 30 square feet
B. 12 square feet
O C. 36 square feet
O D. 42 square feet

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

Given that abcd is a rhombus, what is the value of x?

Eliza wants to make $10,000 from her investments. she finds an investment account that earns 4.5% interest. she decides to deposit $2,500 into an account. how much money will be in her account after 14 years?