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New exercises from Khan Academy 2020-01-17T17:46:19.806574
Updated: 20 min 51 sec ago

### Sequences word problems

Sun, 2019-11-17 17:28
Given a verbal description of a real-world relationship, determine the sequence that models that relationship.

### Freefall: graphs and conceptual questions

Sun, 2019-11-17 17:27
Practice selecting correct statements and graphs relating velocity and acceleration.

### Average velocity and speed in one direction: word problems

Sun, 2019-11-17 17:13
Practice calculating average velocity and speed from word problems when an object moves in one direction.

### International trade and public policy

Fri, 2019-11-15 20:40
Practice what you have learned about the impact of trade, tariffs, and quotas on consumer and producer surplus in this exercise.

### Hypertext Transfer Protocol (HTTP)

Thu, 2019-11-14 20:42
Check your understanding of HTTP requests and responses, in this set of free practice questions designed for AP Computer Science Principles students.

### Expected counts in chi-squared tests with two-way tables

Thu, 2019-11-14 19:01
Practice calculating expected counts for a chi-square test for independence or homogeneity using a two-way table.

### Manifest Destiny

Thu, 2019-11-14 18:47
Practice your skills in this quiz on Manifest Destiny.

### Intermediate Circulatory System Quiz

Thu, 2019-11-14 18:27
Intermediate Circulatory System Quiz

### Kinematic equations: numerical calculations

Wed, 2019-11-13 05:51
Practice calculating acceleration, velocity, displacement, and time from word problems using kinematic equations

### Write decimals and fractions shown on grids

Tue, 2019-11-12 23:15
Practice these problems to see how decimals and fractions can represent the same number.

### Construct exponential models

Tue, 2019-11-12 20:25
Given a verbal description of the rate of change of a real world situation, find the exponential function that models it.

### Changes in equilibrium

Tue, 2019-11-12 18:39
This exercise practices finding a new equilibrium price and quantity when supply changes, demand changes, or both supply and demand are changing simultaneously.`

### Rational number word problems

Tue, 2019-11-12 17:58
Practice solving multi-step word problems. The numbers in these problems may be fractions, decimals, and percents.

### Systems of equations with elimination challenge

Mon, 2019-11-11 23:04
Solve systems of equation with multi-step elimination (e.g., a manipulation is needed in order for x-values or y-values to cancel each other out).

### Explicit formulas for geometric sequences

Mon, 2019-11-11 19:23
Solve problems such as: The first four terms in a geometric sequence are 1/3, 1, 3, and 9. Find an explicit formula for the sequence.

### Multiply & divide rational expressions

Sun, 2019-11-10 10:42
Example: Multiply and simplify (a²-4)/(a²-1) X (a+1)/(a+2).

### Solve quadratic equations: complex solutions

Sun, 2019-11-10 10:40
Solve quadratic equations using the quadratic formula. Some of the equations have real solutions while others have complex solutions.

### Describing trends in scatter plots

Fri, 2019-11-08 21:15
Practice making sense of trends in scatter plots. That is, explain what trends mean in terms of real-world quantities.