What does a+2b=if a = 6

Angle A and Angle B complementary angles. Angle A = (3x+6). Angle B = (3x+18) then find the measure of Angle A?

Josh was born on 30/06/03. How old is he on the 1 september 2015

81^x = 3^x+6 is the question and i dont really understand how to solve

What's 103.468 rounded to the nearest liter?

A bag has 6 red and 5 blue marbles. What is the probability of drawing a blue then a red, if the first marble is not replaced after it has been drawn? A. 1/30 B. 11/30 C. 1/29 D. 3/11

Lilia meets her cousin Carmen and starts chatting a few minutes later. Mariene, who is Carmen's cousin, can affirm that: a-marlene is aunt of lilia b-lilia may be cousin of marlene c-marlene may be lilia's mother d-carmen is older than lilia e-lilia

Naughty spent $28 on 2 DVDs at this rate how much would five DVDs cost and what rate did she spend her money

Apply the distributive property to factor out the greatest common factor. 3 0 + 4 2 = 30+42

Gwen is sending a box to a friend. The box weights 23.5 pounds. Gwen removes a 4.47-pounds book to decrease the shipping cost. What is the new weight of the box?

New designs for a wastewater treatment tank have proposed three possible shapes, four possible sizes, three locations for input valves, and four locations for output valves. How many different product designs are possible?