Identify the type of sample used. A store employee surveys every 20th person who enters the store. A. convenience B. simple random C. stratified random D. systematic

The temperature at 6pm was 72 degrees. this was 8 degrees cooler than at 4pm. the temperature at 10am wss 5 degrees hotter than at 4pm. what was the temperature 10am

The area of the triangle formed by x - and y - intercepts of the parabola y=0.5 (x-3) (x+k) is equal to 1.5 square units. Find all possible values of k.

Suppose you roll a standard number cube once. Are rolling a 4 and rolling a 3 mutually exclusive events? Explain.

In the first game of a bowling tournament, a three-person team averaged 190. If, in the second game, one person's score increased by 7, another person's score increased by 15, and the third person's score decreased by 4, what was the team's average

Mr. Burn's class is taking aa field trip to the planetatium. The trip will $27 for each student. There are 18 students in his class. Use compatible numbers to estimate the total cost of the field trip

The rectangle below has an area of x^2-9 square meters and a width of x-3 meters. What expression represents the length of the rectangle?

Mr. Haney has 11 coins in dimes and quarters. The value of his coins is $2.15. how many dimes does he have?

Different varieties of field daisies have numbers of petals that follow a fibonacci sequence. Three varieties have 13,21, and 347 petals. How many petals do the next two varieties of field daisy have? a. 42, 55 b. 47,60 c. 42,50 d. 55,89

A certain hybrid car can travel 1 4/11 times as far as a similar non hybrid car can, each on one gallon of gasoline. If the non hybrid car can travel 33 miles per gallon of gasoline how far can the hybrid travel on 4/5 gallon of gasoline?

What is the value of 6x+4x+8, when x=7