How do you find the greatest perfect square of 650

I'm not quite sure how to do this question: - 2 (35-5y)

What occurs during this natural disaster?

In 1940, Cornelius Warmerdam used a bamboo pole to vault 15 ft 8 inches. In 1962, Dave Tork using a fiberglass pole, vaulted 16 ft. 2 inches. How much higher was Tork's vault then Warmerdam?

Use ΔDEF, shown below, to answer the question that follows: Triangle DEF where angle E is a right angle. DE measures 55. EF measures x. Angle D measures 49 degrees. What is the value of x rounded to the nearest hundredth?

I'm trying to understand the process of regrouping in the hundredths when adding

Eight thousand six and thirty-four thousandths * Write as a decimal

The diagonals of a trapezoid are congruent only if the nonparallel sides are congruent--True or False

Solve 2x2 + 5x + 5 = 0. Round solutions to the nearest hundredth.

Determine if the ratios are proportional. 4/5 and 15/20

What is the angle of a triangle if one angle is 68 and the other is 52