The height of a rhombus is 5 cm. the area is 20 cm².
a) find the measure of the base \
b) find the perimeter of the rhombus

An an average person has 6×10 by the power of two as many red blood cells as white blood cells a small sample of the blood has 7×10 by the power of three white blood cells about how many red blood cells are in the sample

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is