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Anuta_ua [19.1K]
3 years ago
7

2(x + 4) − 1 = 2x + 7

Mathematics
2 answers:
Margarita [4]3 years ago
7 0

Answer:

All real numbers are solutions to this problem.

Step-by-step explanation:

I) Simplify:

2(x + 4) - 1 = 2x + 7

x + 4 - 0.5 = x + 3.5 (Divide by 2)

x + 3.5 = x + 3.5 (Simplify <em>x + 4 - 0.5</em>)

x = x

II) Conclusion:

Any real number will work as a solution.

madreJ [45]3 years ago
5 0
True for all x


2x+7=2x+7
-7 -7
2x = 2x
-2x -2x
0=0

maybe that seems right
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Triangle ABC is defined by the points A(2,9), B(8,4), and ((-3,-2).
Anettt [7]

The equation of the line is 5y = 6x + 8 which passes through point C and perpendicular AB.

<h3>What is the slope?</h3>

The ratio that y increase as x increases is the slope of a line. The slope of a line reflects how steep it is, but how much y increases as x increases. Anywhere on the line, the slope stays unchanged (the same).

\rm m =\dfrac{y_2-y_1}{x_2-x_1}

We have a triangle ABC is defined by the points A(2,9), B(8,4), and C(-3,-2).

The slope of the segment AB:

\rm m =\dfrac{4-9}{8-2}

m = -5/6

The slope of the line perpendicular to AB:

Let M is the slope of the line:

mM = -1

(-5/6)M = -1

M = 6/5

The line:

y = Mx + c

y = (6/5)x + c

The line passing through the point C(-3, -2)

-2 = (6/5)(-3) + c

c = 8/5

y = (6/5)x + 8/5

5y = 6x + 8

Thus, the equation of the line is 5y = 6x + 8 which passes through point C and perpendicular AB.

Learn more about the slope here:

brainly.com/question/3605446

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5 0
2 years ago
The first three steps in determining the solution set of the system of equations algebraically are shown.
jolli1 [7]
Since both are equivalent to y, the equations must be equivalent.
x^2-x-3= -3x+5
x^2+2x-8=0

(x+4)(x-2)=0
x=-4, x=2

Plug the values of x in to either equation
y=-3(-4)+5
y= 12+5
y=17

y= -3(2)+5
y=-6+5
y=-1

Final answer: (-4,17) and (2,-1)
8 0
3 years ago
Read 2 more answers
Is 3:4,9:16,and 18:64 equivalent
mrs_skeptik [129]

Answer:

Yes

Step-by-step explanation:

it is a form of progression that works by squaring the previous digits to get the next digit

5 0
3 years ago
Solve for t: <br> -4(t+4)=-8t-24
kotykmax [81]

Answer:

\rm{-2

Step-by-step explanation:

Hi there!

\rm{-4(t+4)=-8t-24}

\rm{-4t-16=-8t-24

\rm{-4t+8t=-24+16

\rm{4t=-8

\rm{-2

Thus, -2 is our final answer.

Hope it helps! Enjoy your day!

\bold{GazingAtTheStars}

4 0
2 years ago
Read 2 more answers
How do I solve this system of equations by substitution?<br> y - 3x = 2, y=(x + 1)^2 - 5
Volgvan
Hello,

y-3x=2==>x=(y-2)/3
==>(x+1)²=((y-2)/3+1)²=(y+1)²/9

y=(x+1)²-5
==>y=(y²+2y1)/9 -5
==>y²-7y-44=0  ; Δ=7²+4*44=225=15²
==>y=(7+15)/2 or y=(7-15)/2

==>y =11 and x=(11-2)/3=3
 or y=-4  and x=(-4-2)/3=-2

sol={(3,11);(-2,-4)}



6 0
4 years ago
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