I don't know how to do completing the square questions in math

What is the slope of - 12x-3y=21

What is the volume of a rock that has the length of 1.9 cm has the width of 1.5 cm and has the height of 3.8 cm?

Jasmine bought 3 meters of ribbon. She used 64 cm to make a hair bow and 98 cm to wrap a gift. How many meters of ribbon does Jasmine have left?

Write an equation. Let x be the unknown number. eight subtracted from a number is 6.

Fresh Market is selling black truffles for $15 per ounce and white truffles for $35 per ounce. You bought a package that weighed 2 ounces and cost $60. How many ounces of each kind does it contain

A roller coaster starts from a deck at an elevation of 20 feet above the ground. On the first hill it climbs 78 feet and then drops 85 feet. On the second hill the coaster climbs 103 feet and then drops 110 feet.

What's the division equation of 7,848 divided by w = 36

Simply the expression. x^3*x^-2

A recipe for salsa uses 65% of tomatoes. if a batch contains 5.2 cups of tomatoes, how large is the batch of salsa

If the fourth multiple of 3 is subtracted from the third multiple of 4 what is the difference