What is x?

3-2x=21

Show the steps?

Whats the first ten terms of a sequence whose first term is - 10 and whose common difference is - 2.

Activating prior knowledge what is a factor

Given 5 + 2 = 7, Choose the related addition sentence that shows the commutative property of addition.

Explain how you could write 35% as the sum of two Benchmark percents or as a multiple of a percent

The product of a number and the number increased by 9 is 36. What is the larger of the two solutions?

Find the volume of a pyramid with a square base, where the perimeter of the base is 12.8 m and the height of the pyramid is 17 m. Round your answer to the nearest tenth of a cubic meter.

The area of a trapezium shaped field is 480m^2, the distance between two parallel Sides 15 m and one of the parallel sides is 20m. Find the other parallel side I will mark as brain lies

Chemists measure the acidity of an aqueous solution using pH. The pH is pH=-log-10[H^+] where pH is a measure of hydrogen ion concentration [H^+] measured in moles of hydrogen per liter of a solution. Find the pH of a solution if [H^+]=5.5x10^-12.

I think of a number, multiply it by 2, subtract 5 and multiply the result by 3 Write it as a algebraic question and any number being x

Whats the area of 18 inches 24 inches and 26 inches