Which statements are true about statistics? Check all that apply. They help describe sets of data. They include the mean, median, range, and interquartile range. They include only mean and median. Measures of center and measures of spread are examples of statistics. They can work only with one set of data. PLEASE ASAP

{3 + i, 3 - i, 3, -1}

step-by-step explanation:

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet

a triangular prism is a 3 dimensional shape composed of triangles and rectangles. it is made from two triangular bases and three rectangular sides.  

16.80 times .20= 3.36

step-by-step explanation: