What value added to x2 + 2x would complete the square

One light year is approximately 5,880,000,000,000 miles. If a star is 8.5 light years from earth approximately how many miles is it from earth

A researcher wants to run a 2 x 3 mixed factorial design. The first factor is the within-subjects. The second factor is the between-subjects. If the researcher wants 20 observations per cell, how many participants will he need in total?

How many times dose 3 go into 3

Diners frequently add a 15% tip when charging a meal to a credit card. What is the total amount charged if the cost of the meal, without tip, is $10 ?

What is the greatest perfect square that's is a factor of 756?

Banks will pay you interest on your money based on the interest rate. True or false?

The perimeter of a rectangle is 136 ft. The ratio of its length to its width is 9 : 8. What are the dimensions of the rectangle? 40 ft by 28 ft 44 ft by 24 ft 48 ft by 20 ft 36 ft by 32 ft

Multiply (3x2 + 2x - 1) (2x + 3)

Find an angle x where sin (x) = cos (x)

Greta and Marge are collecting money for a local charity by taking donations outside of busy local businesses. Hoping to collect the most money today, Greta gets to her collection spot and begins collections at 8am.