How to find the perimeter of a triangle with one side missing?

Alison wants to find out how much time people spend reading books. She is going to use a questionnaire. Design a suitable question for Alison to use in her questionnaire ...

What is x in the equation 12x - (7-3x) = -8x-30

What is 2/3 of 90 degrees equal

Ricky is at the bakery shop when he sees that 8 pastries cost $160. he need 16 pastries. how much will 16 pastries cost?

What is the answer to this -2 (4x-3) = 10

A sentence that equals to x=7

A car with a tank that holds 11.6 gallons of gasoline is using 1.45 gallons per hour. Is the tank more than half full of gasoline after 3.5 hours? Explain your answer.

Jacob wants to know the favorite sport among sixth grade students. Which types of survey below with give Jacob valid results?

If f (x) = 2x+7, find the value of x when f (x) = 10

Working together Katherine and Julianna can plant new trees on there recently divorced land in 4 days working alone it would take Giuliana to days longer than it would take Catherine to plant the trees how long would it take Katherine working alone