Do tessellations have to be polygons?

Which of the following is not a condition for a tessellation?

The shape or shapes must be repeated.

The shapes must not overlap.

There can be no gaps.

The shapes must be polygons.

Write the expression as a square of a binomial if possible: 9y^2+c^2d^2+6cdy

I have 690 green cups. if the cups are 30% of the total package< how many cups are in the package

Savings account A and savings account B both offer APRs of 6%, but savings account A compounds interest quarterly, while savings account B compounds interest semiannually. Which savings account offers the higher APY?

Nishi invests £4300 at %5 interest a per year, how much will she have after 2 years

The 15th term of arthimetic sequence is 43 and the common difference is 4 find the first term

Write the converse of the conditional statement. If a shape is a rhombus, then it has four congruent sides.

The difference of two numbers is 34 and their sum is 338

Liam is setting up folding chairs for a meeting. If he arranges the chairs in 9 rows of the same length, he has 3 chairs left over. If he arranges the chairs in 7 rows of that same length, he has 15 left over. How many chairs does Liam have?

A rectangle on a coordinate plane has vertices (-1.1), R (6, 1). S (6.-8), and T (-1,-8). What are the dimensions of the rectangle? The base is 6 and the height is 9. The base is 9 and the height is 6. The base is 7 and the height is 9.

Which number below rounds 7.56 when rounded to the nearest hundred 7.564 C 7.565 b 7.569 or 87.56