Explain how to simplify this expression: (7a + 9) + (4a - 7).

Express cos 5x in terms of sine multiples of x

2 1⁄2 miles = how many feet?

If m∠1 = 105 and m∠4 = 115, then m∠6 = 40 50 60 75

Calculate the rounding error when 7.69 is rounded to 1 decimal place

Lin says that the inequalities h>150 and h<160 describe her height in centimeters. what do the inequalities tell us about her height?

A Florida factory produces fishing reels at a rate of 800 per day, every day. In April, they are forced to cut their production by 1/5 due to an aluminum shortage. A chain of sporting goods stores orders 20,000 fishing reels.

Find the product and simply 4/9 of 15/8

If you know the number of yards for a measurement, you can change that measure to meters by multiplying the number of yards by 0.9144. a. Write a function rule that relates meters to yards.

Jerry drew an obtuse angle. Which could be the measure of his angle?

A library charges a late return fee of 3.50 plus $0.15 per day that a book is returned late write a equation to find the total late fee f for any numbers of days late d