My school is closed for the rest of the year (not sure whether to be happy or sad)

Why is a question mark

used above the equal sign when

checking whether or not a given value

is a solution to an equation?

The Turtle and Achilles compete. They start at the same time from the same place. Achilles runs at a speed of 13 mph while the Turtle moves at a speed of 1 mph. When Achilles reaches the finish line, the Turtle is 2 5 of a mile behind him.

What percentage of the integers from 1 to 50, inclusive have a units digit that is three times the tens digit

Candace notices that 2/7 of a gallon of milk is on The top shelf of the refrigerator and 3/5 of milk on the bottom shelf how much milk is in the refrigerator in all

Mary pays income tax according to the graduated schedule shown below. But not over- If taxable income is over- The tax is: $7,825 $31.850 $7.825 $31.850 S77.100 $77.100 $160.850 10% of the amount over SO $782.

Solve the equation. 6 (2x - 3) + 4 = 16 - (-18)

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.