What's the complex conjugate of 13-21i

The length of a rectangle is 5 cm longer than twice the length of the with. Is the perimeter of the rectangle is 88 cm what is the width?

A store buys 77 1 2 pounds of mulch in a large shipment. They divide the mulch up into bags that can each hold 2 1 4 pounds. The store sells one bag of mulch for $2.25. For each part of the question, show your work.

A line perpendicular to - 9x + 2y = - 8

Find an equation of the plane through the origin which is parallel to the plane x - 6y + 4z = 7.

If 7 times a number is decreased by 5 and this difference is doubled the result is 14 less than twice the number. What is the number

A function of the form f (x) ott is modified so that the b value remains the same but the a value is increased by 2.

4/9 : x = - 8/15. Find the4/9 : x = - 8/15. Find the value of x.

The GCF of 7and21 is

If lines ab and cd are parallel which of the following statements are true

You paid 28.00 for 8 gallons of gasoline. How much would you pay for 15 gallons of gasoline?