Explain why there must be at least two lines on any given plane.

75+5+_=100, so 100-75=25 114+6+_+_=132 so 132-114

What is the solution to 5+11+3-7=-4 5 a + 11 + 3 a - 7 = - 4 ?

Ann made a 33-step staircase using 1818 toothpicks as shown in the figure. How many toothpicks does she need to add to complete a 55-step staircase?

How to divided 18 by 32

A computer randomly picks a number from the group 105, 106, 107, 108, 109, 110, 111, 112, 113, 114. What is the probability the number selected is 111 or smaller than 107? Enter your answer in the box as a decimal.

Prove the identity with steps. sin (x-y) / cos x sin y = tan x cot y - 1

What is x^2-64=0

How much of a $2,376.80 monthly net income is allotted for food if 23% is budgeted?

Draw a quadrilateral with only one set of parallel sides

Factor u^2 + 18u + 17