Questions in Grade High-school

Questions in Grade High-school

[Homework Help] Find the mistake in the chemical equation: \[ \text{C}_2\text{H}_4(g) + 2\text{O}_2(g) \rightarrow 2\text{CO}_2(g) + 2\text{H}_2(g) \]

[Homework Help] What is depicted on a synoptic map?

[Homework Help] What are the three main functions of the nervous system? Give an explanation of each.

[Homework Help] What were four of Porfirio Diaz's accomplishments?

[Homework Help] String A is 30 cm longer than string B. String B is 60 cm longer than string C. The total length of all 3 strings is 3 m. Find the length of string C.

[Homework Help] A businessman buys 1,440 dozen pens at $2.50 a dozen and then sells them at a price of 25¢ apiece. What is his total profit on the lot of pens?

[Homework Help] Divide and simplify: \[ \frac{4}{9} \div \frac{8}{15} \]

[Homework Help] Find the next three terms of the sequence: 80, –160, 320, –640.

[Homework Help] Calculate the expression: \(4 + 2(5 \times 7)\)

[Homework Help] Simplify the expression: (12y^2 + 17y - 4) + (9y^2 - 13y + 3)