At a local zoo, the number of resident birds is twice the number of four-legged mammals. If the total number of legs between the birds and mammals equals 80, how many birds are there?

triangle abc has vertices A (4,5) B (2,1) and C (7,3). what is the slope of the altitude drawn from A to BC

A pair of angles whose sum is 90 degrees are called:

While travelling, john left destination a at 9 am. driving until 7 pm, he travelled a total of 500 miles. the next day, john left at 9 am and drove until 5 pm, covering 270 miles. what was the average speed for both days, while driving?

What is the value of x/2 y, when x = 10 and y = 1? enter answer in box

The cafeteria is making identical fruit baskets they have 35 apples and 28 oranges they want each basket to have the same number of each type of fruit what is the greatest number of baskets they can make

Evaluate the expression for x = 4 1/3 9x + 4 A) 39 B) 40 C) 43 D) 52

Tom rented a truck for one day. There was a base fee of $16.99, and there was an additional charge of 90 cents for each mile driven. Tom had to pay $190.69 when he returned the truck. For how many miles did he drive the truck?

What are the advantages of using an algebraic expression to represent a pattern rule, compared with describing the pattern in words?

What is they ratio of students in 6th grade if there are 20 6th graders and 24 students in 5th grade

Travis runs an average of 25 miles per week give or take six miles. let m be the number of miles travis runs each week