88.7k views
4 votes
I need the answer as fast as possible because I have to go somewhere

I need the answer as fast as possible because I have to go somewhere-example-1
User Dranxo
by
4.9k points

1 Answer

3 votes

SOLUTION

Step1: Write out the inequality


8x-(5x+4)\ge-31

Step 2: Solve the inequality above


\begin{gathered} 8x-(5x+4)\ge-31\ldots\ldots\text{ Expand the parenthesis} \\ 8x-5x-4\ge-31\ldots\text{.. collect like terms} \\ 8x-5x\ge-31+4\ldots..\text{ Add the expression} \\ 3x\ge-27 \end{gathered}

by further simplification, we have


\begin{gathered} 3x\ge-27\ldots\text{.. divide bothe side by the coefficient of x} \\ x\ge(-27)/(3) \\ x\ge-9 \end{gathered}

Step 3: Rewite the solution in other forms

The solution can also be written as


1.\text{ -9 }\leq x

Then using number line we have

This is a number line with an enclosed circle shaded towards the right

Therefore the solution to this inequality cannot represented as a number line with an enclosed circle on -9 shaded to the left

The right option is C

I need the answer as fast as possible because I have to go somewhere-example-1
User Jeroen Coumans
by
4.9k points