Write cos (5x) + cos (3x) as a product.

How many twelfths are equal to 2/3

How far does a plane travel in 5 hours if it is moving at a constant speed of 200km/h?

Which property of equality justifies the statement if x - 2 = 9, then x = 11

What is the value of x in the equation a 6 b 15 c 54 d 57

A bird bath holds 4 liters of water. what does it hold?

Does a parallelogram have to have an acute angle

The owner of an audio store recived a shipment of portable stereos at a cost of $102.30 each. If he sells the stereos for 181.99 each, what is the percent of markup? Round to the nearest whole percent

A pair of boots has an original price of $95. They are on sale for 35 percent off. What number can you multiply $95 by to equal the discounted price of $61.75?

A measurement of 8,452 meters has a lower margin of error than a measurement of 84.52 meters. True or False?

Explain how ba+ca can be rewritten as a (b + c)