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iVinArrow [24]
3 years ago
8

Find the value of x.

Mathematics
1 answer:
asambeis [7]3 years ago
7 0

Answer: 3

Step-by-step explanation:

4x+23=7x+14

4x-7x=14-23

-3x=9

x=9/3

x=3

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42 less than the product of 28 and an unknown number is 154
zalisa [80]
First you write out your equation, which is 28x-42=154. Then you solve you equation. First, add 42 to each side, get 28x=196. Divide both sides by 28, get x=7.
8 0
3 years ago
For what values of <img src="https://tex.z-dn.net/?f=x" id="TexFormula1" title="x" alt="x" align="absmiddle" class="latex-formul
11Alexandr11 [23.1K]

Answer:

x1

Step-by-step explanation:

We have:

(x+5)(x-1)

And we want to find the value of x such that the expression is positive. So, we can write this as the following inequality:

(x+5)(x-1)>0

Solve for the inequality. First, we can solve for the zeros like a normal quadratic. So, pretend the inequality is with an equal sign:

(x+5)(x-1)=0

Zero Product Property:

x+5=0\text{ or } x-1=0

On the left, subtract 5.

On the right, add 1.

So, our zeros are:

x=-5, 1

Since our inequality is a <em>greater than</em>, our answer is an "or" inequality with our answer being all the values to the <em>left</em> of our lesser zero and all the values to the <em>right </em>of our greater zero.

So, our solution is:

x1

And we're done!

7 0
3 years ago
Read 2 more answers
Write an equation in slope-intercept form for the line with y-intercept −5 and slope −2/5
riadik2000 [5.3K]

Answer:

\large\boxed{y=-\dfrac{2}{5}x-5}

Step-by-step explanation:

The slope-intercept form of an equation of a line:

y=mx+b

<em>m</em><em> - slope</em>

<em>b</em><em> - y-intercept</em>

<em />

We have

m=-\dfrac{2}{5},\ b=-5

Substitute:

y=-\dfrac{2}{5}x+(-5)}=-\dfrac{2}{5}x-5

8 0
3 years ago
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Phantasy [73]
I hope this helps I took both of the points and used the slope formula to get my slope which is 7/10 then I took any point from those two then I plugged it in to get the point slope form

Answer: y-3=7/10(x-6)

6 0
3 years ago
Can anyone help me in Ptolemy's theorem?
GalinKa [24]

Answer:

Well, I'm not sure what you mean but Ptolemy's Theorem gives a relationship between the side lengths and the diagonals of a cyclic quadrilateral; it is the equality case of Ptolemy's Inequality. Ptolemy's Theorem frequently shows up as an intermediate step in problems involving inscribed figures.

8 0
3 years ago
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