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Differential Equations 15 Online
OpenStudy (anonymous):

Please help. The question is attached

OpenStudy (anonymous):

OpenStudy (anonymous):

it looks like an inequilitey or something imma have to work it out and go through the steps with you ok

OpenStudy (anonymous):

@johntavies Help me out please

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

Section 1 00:00:00TEACHER: Hello, and welcome to the lesson about multiplication and division inequalities. By the end of this lesson, you'll be able to answer the question, how can you use multiplication and division to solve an inequality? Let's get started. Section 2 00:00:00TEACHER: Let's look at our lesson goals. In this lesson you will solve 1 step multiplication inequalities, you will solve 1 step division inequalities, in order to solve inequalities in the real world and interpret the results. Let's look at our words to know. The first word is interpret, since it's in green, this is a general academic word that you're likely to read and use 00:00:24in all subject areas. The next words are division property of inequality, inverse operations, multiplication property of inequality, and solutions set. Since these words are in purple, these are domain specific words, and refer to the skills and concepts that we will discuss in this lesson. Section 3 00:00:00TEACHER: In this lesson you'll be answering the question, how can you use multiplication and division to solve an inequality? Have you ever seen an animal such as this squirrel scurry across the road? A squirrel can run as fast as 10 miles per hour. You can use inequalities to determine how much time a squirrel needs to run across a road. 00:00:22Let's first practice solving multiplication and division equations. Section 1 00:00:00TEACHER: In this lesson, you are answering the question, how can you use multiplication and division to solve an inequality? You've practiced solving inequalities using multiplication and division, and you learned when you must reverse the inequality when solving. Now, let's look at our lesson goals and key concepts. Section 2 00:00:00TEACHER: The goals of this lesson were to solve one-step multiplication inequalities and to solve one-step division inequalities, in order to solve inequalities in the real world and interpret the results. Let's look at our key concepts. If multiplying or dividing both sides of an inequality by a positive number, the direction of the inequality stays the same. 00:00:27If multiplying or dividing both sides of an inequality by a negative number, the direction is reversed. Let's go ahead and solve this inequality here on the right side of the slide. Notice that the operation between the negative 8 and the x is multiplication. So we need to use the inverse operation of multiplication, which is division. 00:00:48So let me first rewrite the inequality. So now, we need to divide both sides by negative 8. So this results in x is greater than negative 26. Since we divided both sides by a negative number, you must reverse the inequality symbol. Let's go ahead and check a value in the solution set. We need a value greater than negative 26. So let me substitute it in negative 10, which is greater 00:01:20than negative 26. Let's see if it checks out. Negative 8 times negative 10 is 80. And this is a true statement. 80 is less than 208. So our solution set is all real numbers greater than negative 26. This is our look at our key concepts. try this i got it from myb teacher he help me with the same thing your working on

OpenStudy (anonymous):

So how would we solve this? @johntavies Are you doing the same question?

OpenStudy (anonymous):

idk

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