Does anybody know what this is?

6.9 + (-5) + 4.1=

I tried working it out several times but every time I do I ... I get a different answer!

What is 60,000 + 3,000 + 20 + 9 in standard form?

How many solutions are there to the equation below? 12x + 32 = 12X-7

The area of a square is 36 square centimeters. A rectangle has the same perimeter as the square. The length of the rectangle is twice the width what is the area of the rectangle in sq cm?

There are 3 trays of eggs each tray holds 30 eggs. how manny people can be served if each person eats 2 eggs

How many shape should be put together to make 5/2?

If the mass is 10 the volume is

John is joining a summer bowling club. At Faction Bowl it costs $10 to join the club and $2 per game of bowling.

How many solutions for linear equation 3x + 5y = 25 can be found so that - 20 < y < 10, and x is an integer?

The green turtle lays eggs that are approximately spherical with an average diameter of 4.5 centimeters. each turtle lays an average of 113 eggs at one time. find the total volume of these eggs, to the nearest cubic centimeter.

Three brothers share 2 sandwiches equally. Hoe much of a sandwich does each brother get?