How do you solve circumference

How do I find the value of Q in the following systems so my solution to the system is { (x, y) : x - 3y = 4} X-3y=4 2x-6y=Q

What is answer to 7,433,654 rounded to nearest. 10,000

Kristin is making spaghetti. Her recipe calls for three-fourths cup of tomato paste. If she needs to make 1.5 recipes, how much tomato paste is needed?

Are sin and cos reciprocals of each other

Ayden has a goal of finishing painting at least 80% of the 500 square meters of a houses walls by today. He actually finished painting 415 square meters today.

Claire takes private lacrosse lessons every 25 days and piano lessons every 35 days. If today she had both lessons how many days from today will she have a lacrosse and piano lessons on the same day again

Dave's Automatic Door, referred to in Exercise 29, installs automatic garage door openers. Based on a sample, following are the times, in minutes, required to install 10 door openers: 28, 32, 24, 46, 44, 40, 54, 38, 32, and 42.

How many times greater is the value of 403.8 than the value of 40.38?

Solve 4^2x+1 = 3^x-2 for x

What a pear weigh 200 kilograms are 200 grams