Matthew collects purple and red marbles. he has 320 marbles and 65% of them are purple. How many red marbles does he have?

А _has two-fold rotational symmetry.

You have $17.50 to buy 5 goldfish for a new fish tank. solve an inequality that represents the prices you can pay per fish

The amount of a 500 g sample of a radioactive substance that remains over time is given by the equation, where d is the number of days since the sample weight was 500 g. A or B? A. linear model B. nonlinear model

Can you factor the expression 2x^2 + 15x + 9? explain why or why not

Which fractions are equivalent to 7 / 28

A convertible is traveling at 45 miles per hour, and its wheels have a diameter of 48 inches. How many complete revolutions do the wheels make in one minute?

Beth has a total of $6000 to invest, part at 6% simple interest and part at 8% simple interest. Her return for one year is $410. How much did she invest at each rate?

What advice would you give a friend who is sending someone mean messages?

Which shapes have 2 pairs of parallel sides? Choose ALL that are correct.

Area and perimeter of a triangle 5,5,4,4 as the perimeters