a ladder 30 decimeters long is leaning against the side of a building. the ladder makes an angle of 25 degrees with the side of the building. how far up from the ground does the ladder touch the buildings?

Anna cut two pizzas into eighths. she ate 1/4 of a pizza on Friday, and three slices on Saturday. What fraction of the two pizzas are left.

Which of the following is equivalent to 18-V-25?

What are the next 4 numbers in the pattern below 20, 15, 10, 5

Find the value of c that will make 9x2 + 30x + ca perfect square trinomial.

What's 8/9x + 276 3/7^2

To decrease an amount by 23%, multiply by?

A garden (60 ft x 40 ft) is surrounded on all sides by a 5 foot walkway. What is the area of the garden? What is the area of the walkway? What is the perimeter along the outer edge of the walkway?

Josh cut a square sheet of paper along a diagonal to make two congruent triangles. The area of one triangle is 60.5 in." Find the length of one side, s, of the square. Show your work.

In a random sample of cars driven at low altitudes, of them exceeded a standard of grams of particulate pollution per gallon of fuel consumed. In an independent random sample of cars driven at high altitudes, of them exceeded the standard.

Suppose you do a favor for 3 people. then you ask each of them to do a favor for 3 more people, passing along the request that each person who receives a favor does a favor for 3 more people.