If these two trapezoids are similar, what is the measure of the missing angle? 90° 115° 90° 65° degree

Which number produces a rationale number when multiplied by 1/5

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?