O que é necessário para que um produto de fatores desconhecidos seja nulo?

Bobbi can mow the park in 3 hours and Deshaun can do the same job in 7 hours. How long will it take them to mow the park if they work together? Round your answer to the nearest tenth and include units.

9 - 12n 2 + 4n 3 - 7n

What expressions are equivalent to 6 - 4.5 + (-8)

One side of the rectangle is 3 times longer then the other. express the area of this rectangle. (draw the rectangle)

Boy paid $ (4X + 7) for a beef roast and $ (2X - 5) for 5 pounds of potatoes right and expression for the total amount you spent on food

How can you determine the number of digit in a quotient?

Which of these values would you most likely see on a U. S. speed limit sign? O A. 200 miles / day O B. 3,500 miles / second C. 18 feet / second O D. 55 miles/hour

Kari is flying a kite. She releases 50 feet of string. What is the approximate difference in the height of the kite when the string makes a 25° angle with the ground and when the string makes a 45° angle with the ground? Round to the nearest tenth.

On Saturday, Mark sold gallons of lemonade. On the same day, Regan sold as much lemonade as Mark. How much lemonade, in gallons, did Regan sell?

What is the common denominator of 3/14 - 6/14