1. algebra

A math class has 3 girls and 7 boys in the seventh grade and 2 girls and 2 boys in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she selects

2. Chem

If 1.5g of calcium sulfate dihydrate decomposed to a monohydrate what is the theoretical yield of the calcium sulfate monohydrate be?

3. Chemistry

Express 900.00 in scientific notation

4. Maths

A plane flies northward for 430km, it then flies eastwards for 380km.How far is it from the starting point?

5. English

1. You have to take the bus number two. 2. You have to take the number two bus. 3. You have to take the Bus Number Two. 4. You have to take the Number Two Bus. [Which one is grammatical?]

6. math

Julie baked cupcakes for her family at home and for a party at school. She iced 4 cupcakes with red frosting, 2 cupcakes with orange frosting, 2 with yellow, 2 with green, 3 with blue and the last 3 with violet frosting. Each cupcake is iced with exactly

7. English

1. Emily is making more soaps this Sunday. 2. Emily is making more soap this Sunday. 3. This is for shampoos, soaps and toothpaste. [Which one is correct? Can we use 'soaps' as in #1? is 'soaps' right in #3?]

8. Math

For questions 2 and 3, use a calculator to find the values of the inverse function in radians. sin^-1(0.65) 0.71 + 2pi n and –0.71 + 2 pi n 0.71 + 2 pi n and –3.85 + 2 pi n 0.86 + 2pi n and –0.86 + 2pi n –0.61 + 2pi n and 2.54 + 2 pi n

9. History

How did the Renaissance movement affect scientific innovations? (Select all that apply the Renaissance and humanism put human reasoning and gathered evidence at the center of scientific inquiry humanist philosophers during the renaissance accepted the

10. world history

Pope Innocent III called for a Crusade against European heretics (1). These Crusades were against fellow Christians because their interpretation of Christianity did not align with the official doctrines of the Catholic Church (2). Church doctrine forbids

11. English

1. How can I get to the train station? 2. How can I go to the train station? - Go straight and turn right. It's on your left. [Can we use both #1 and #2? Which one is commonly used?] 3. Wally's Sports Shop is on the second floor. [What does 'Wally' mean in

12. Math

It cost a family \$348 to buy a 15ft by 26ft rug. If the cost is proportional to the area, what will it cost the family to buy a 7.5ft by 8ft rug 89.66 188.50*** 249 87

13. Physics

A FORCE OF 5N EXTEND A SPRING OF NATURAL LENGHT 0.5m BY 0.01m WHAT WILLTHE LENGHT OF THE SPRING WHEN APPLY FORCE IS 20N

14. Physics

Suppose a 101 kg crate is pulled by a horizontal force of 525 N along a flat surface. The coefficient of kinetic friction is 0.35. Find the acceleration of the crate.

15. Physics

A 60 kg block slides along the top of a 100 kg block. The lighter block has an acceleration of 3.7 m/s2 when a horizontal force F= 350 N is applied. Assuming there is no friction between the bottom 100 kg block and the horizontal frictionless surface but

16. Physics

Two crates of fruit are released from the top of a ramp inclined at 25 degrees from the horizontal and 2.5 meter long. The two crates consist of an apple crate of mass 35 kg that is placed in front of a watermelon crate of mass 80 kg. The apple crate has a

17. chemistry

25 ml of milk were titrated with a 0.124M KOH solution of potassium hydroxide. If 4.5 ml of KOH solution were required to reach the titration endpoint, with a percentage (% w / v) lactic acid present in the milk? (MM = 90.08g / mol)

18. Sociology

How does the two-party system in the United States affect political involvement?

19. Sociology

What are some explanations for why voter turnout is so low in the United States compared to other wealthy, literate, and democratic countries?

20. Programming

Must be in C#: I will not be submitting this work as my own work. I just want help with the problem. For today's lab you will be creating a basic inventory system. The inventory system will be for a DVD store. You will have to make a DVD class that has