Which expression would demonstrate the use of the commutative property in addition in the first step of simplifying the expression (-1+i) + (21+5i)

Use the formula C = 2 (3.14) r to find the radius, r, for a circle with a circumference of 125 centimeters. Round your answer to the nearest hundredth.

Miss Piper randomly selects 3 students to form a party-planning committee for classroom birthdays. If there are 30 people in the class, how many groups can be formed?

If two triangles are similar, then the angles are __ and the sides are ___.

If you cut a trapezoid in half which quadrilateral is it

Solve for y. 3y - 12 = - 6 A. - 54 B. 2 C. 18 D. - 6

Angles DAB measure (4x-2) and angles BCD measures 47 degrees. find x

Which expression is equivalent to the following expression? 3 (2x + 3) 5x + 6 6x + 6 6x + 9 5x + 9

Use compatible numbers to find two estimates 33 divided by 2242

What is 7,058 divided by 9

78 students are going to be divided into 24 groups and the number of each group member will be either 4 or 2. How many groups of 2 will there be? Let x be the number of groups of 2 and let y be the number of groups of 4