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oee [108]
3 years ago
7

Simplify

20-%20%287x%20%2B%203%29" id="TexFormula1" title="(x^{2} + 3x - 4) + (4^{2} - 5) - (7x + 3)" alt="(x^{2} + 3x - 4) + (4^{2} - 5) - (7x + 3)" align="absmiddle" class="latex-formula">
​
Mathematics
2 answers:
Kazeer [188]3 years ago
8 0

First you want to drop the parenthesis. If there is a “+” sign, you do not have to change anything. If there is a “-“ sign, you have to distribute the negative in order to simplify, so imagine you are distributing -1 to 7x + 3 to make it -7x -3.

So, you now have x^2 + 3x - 4 + 16 -5 - 7x -3. (I evaluated the 4^2 to 16)

Now, what you want to do now is to combine like terms. Notice that there is only one x^2, so it is the same. There are two terms that have “x”. 3x and -7x react like normal numbers and they form -4x. The numbers who don’t have x on them you combine like terms.

Answer is x^2 - 4x - 12

xxTIMURxx [149]3 years ago
3 0

X^2-4x+4 is the answer, to save you points next time, use an app called M8thw8y

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(4,2);slope=3<br><br>help me out
ivolga24 [154]
We have a point and a slope, so let's use the point slope formula!

(y - y1) = m(x - x1)
where
x1=4
y1=2
and m=3

(y - 2) = 3(x - 4) \\ y - 2 = 3x - 12 \\ y = 3x - 10
8 0
3 years ago
#2 Q is between P and R. Find PR.<br> 6x + 4<br> 3x<br> 3x tc<br> P<br> R<br> Q<br> 14x - 6 6-
otez555 [7]

Answer:

PR=22

Step-by-step explanation:

3x+6x+4=14x-6

9x+4=14x-6

10=5x

x=2

Plug in

3(2)

6

6(2)+4

12+4

16

16+6

22

So the bottom should equal 22

14(2)-6

28-6

22

Hope this helps

Brainliest would be appreciated

8 0
2 years ago
Whats a line passing<br> through the<br> points (0, 0) and<br> (5,-7)?
Ipatiy [6.2K]

Answer:

y = -7/5x

Step-by-step explanation:

First, we need to use the two points to find the slope.

m = y₁ - y₂ / x₁ - x₂

m = -7 - 0 / 5 - 0

m = -7/5

Now we know that the slope is -7/5. Now we'll substitute the information we've gathered into the point-slope form equation to get an equation.

y - y₁ = m(x - x₁)

y - (-7) = -7/5(x - 5)

y + 7 = -7/5x + 7

y = -7/5x

Therefore, the equation of the line is y = -7/5x.

7 0
2 years ago
Solve 9(8 - x) = 3x.
bulgar [2K]

Hello - let's do this step by step. Show your work.

You're asking: 9(8−x)=3x.

Now, simplify both sides of the equation.

9(8−x)=3x

(9)(8)+(9)(−x)=3x (To do that, distribute)

72+−9x=3x

−9x+72=3x

Now,  subtract 3x from both sides.

−9x+72−3x=3x−3x

Simplify,

−12x+72=0

After, subtract 72 from both sides.

−12x+72−72=0−72

−12x=−72

Last thing, divide both sides by -12.

-12x/12 = -72/-12

Divide.

Therefore, you have <u>x = 6</u> as your final answer.

7 0
3 years ago
How to graph this inequalitie X&lt;-4
bulgar [2K]

Answer: 3

Step-by-step explanation: 2+1=3

3 0
2 years ago
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