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Stella [2.4K]
2 years ago
14

-1/2x + 6 < 4x - 3 i need to find the value of X with step-by-step explanation

Mathematics
2 answers:
Ray Of Light [21]2 years ago
8 0

Answer:

\boxed{\boxed{\tt x>2}}

Step-by-step explanation:

\tt -\cfrac{1}{2}x+6

<u>Subtract 6 from both sides:</u>

  • <u />\tt -\cfrac{1}{2}x+6-6<u />
  • <u />\tt -\cfrac{1}{2}x<u />

<u>Now, subtract 4x from both sides:</u>

  • <u />\tt -\cfrac{1}{2}x-4x<u />
  • <u />\tt -\cfrac{9}{2}x<u />

<u>Multiply both sides by -1:</u>

  • <u />\tt -\cfrac{9}{2}x\times -1<u />
  • <u />\tt \cfrac{9}{2}x>9<u />

<u>Multiply both sides by 2:</u>

  • <u />\tt 2\times \cfrac{9}{2}x>9\times \:2<u />
  • <u />\tt 9x>18<u />

<u>Divide both sides by 9:</u>

  • <u />\tt \cfrac{9x}{9}>\cfrac{18}{9}<u />
  • <u />\tt x>2<u />

<u>____________________________</u>

WITCHER [35]2 years ago
7 0

Answer:

x > 2

Step-by-step explanation:

-1/2x + 6 < 4x - 3

Start by adding 1/2x to both sides to get both x's on the same side

6 < 4 1/2x - 3

Add 3 to both sides to keep the x's by themselves on one side

9 < 4 1/2x

Divide both sides by 4 1/2 to get x by itself

2 < x  so x > 2

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-\frac{3}{4}

Step-by-step explanation:

the equation for finding the slope of a line when given two points is \frac{y_2-y_1}{x_2-x_1}, aka the change in y over the change in x.

pick one of your coordinate pairs to be y_2\\ and x_2. it doesn't matter which coordinate pair you choose as long as you keep them as y_2\\ and x_2. the remaining coordinate pair will be y_1 and x_1.

for this example, i'll use (2, 10) for y_2\\ and x_2 and (6, 7) for y_1 and x_1.

<em>**before i begin, i just want to note that you can do these next four steps in any order that you want. i personally prefer to plug in my y-values first and then my x-values, but you can choose to instead plug in the values of each coordinate pair (like starting by plugging in the coordinate pair (2, 10) with 10 for </em>y_2\\ and 2 for x_2<em>). it's up to you. i'm going to explain the steps by plugging in my y-values first and then my x-values because that's the way i normally do it.</em>

<em />

first, start by plugging in the y-value from the coordinate pair of your choosing in for y_2\\. since i chose (2, 10) for y_2\\ and x_2, i'll plug in 10 for y_2\\.

\frac{y_2-y_1}{x_2-x_1} ⇒ \frac{10-y_1}{x_2-x_1}

then plug in the remaining coordinate pair's y-value in for y_1. since the coordinate pair that's left is (6, 7), i will plug in 7 for y_1.

\frac{y_2-y_1}{x_2-x_1} ⇒ \frac{10-7}{x_2-x_1}

now i'm going to plug in the x-values. i chose (2, 10) to plug in for y_2\\ and x_2, so now i'll plug in 2 for x_2.

\frac{y_2-y_1}{x_2-x_1} ⇒ \frac{10-7}{2-x_1}

and all that's left to plug in is the x-value from (6, 7), so i will plug that in for x_1.

\frac{y_2-y_1}{x_2-x_1} ⇒ \frac{10-7}{2-6}

after plugging in all the values, you have \frac{10-7}{2-6}.

subtract 10 - 7 as well as 2 - 6.

\frac{10-7}{2-6} ⇒ \frac{3}{-4}

\frac{3}{-4} cannot be simplified, therefore the slope of the line is \frac{3}{-4} or -\frac{3}{4}.

i hope this helps! have a lovely day <3

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