A triangle has 8cm and 5cm and an angle of 90° between them. Calculate the smallest angle of the triangle

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.

Heather is riding a quadratic function that represents a parabola that touches but does not cross the x-axis at x=-6

The scatter plot shows the number of animal cells clara examined in a laboratory in different months: plot ordered pairs 1, 20 and 2, 60 and 3,100 and 4, 140 and 5, 180 what is the approximate predicted number of animal cells clara examined in the 9th month?