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vesna_86 [32]
3 years ago
6

Solve (x + 4)2 – 3(x + 4) – 3 = 0 using substitution. u = x + 4 Select the solution(s) of the original equation.

Mathematics
1 answer:
skelet666 [1.2K]3 years ago
6 0

Answer:

-7

Step-by-step explanation:

2(x+4)-3(x+4)-3=0

2x+8-3x-12-3=0

-x+8-15=0

-x-7=0

 +7  +7

-x=7

/-1  /-1

x=-7

--

hope it helps

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A 20-sided regular polygon has an angle measure represented as 3gº.
Andre45 [30]

The value of g in the 20 sided regular polygon is 54.

<h3>How to find the angles of a regular polygon?</h3>

If all the polygon sides and interior angles are equal, then they are known as regular polygons.

The polygon given is a 20 sided regular polygon and the measure of each angle is 3g degrees.

Therefore, let's find g.

The sum of interior angles of a 20 sided polygon is as follows:

180(n - 2) = 180(20 - 2) = 180(18) = 3240

Therefore,

each angle = 3240 / 20 = 162

Hence,

162 = 3g

g = 162 / 3

Therefore,

g = 54

learn more on regular polygon here: brainly.com/question/16992545

#SPJ1

8 0
1 year ago
Please help me guys, I need some answers
ella [17]

A one is 12

B is 25

just multiply by 6

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
PLZ Help Urgent. 15 POINTS, BRAINLY Guaranteed.
leva [86]

Answer:

5

Step-by-step explanation:

\frac{15}{1} multiplied by \frac{1}{3}

which makes: \frac{15}{3}

simplify: 5

8 0
3 years ago
the least common denominator for the sum 3/8 + 512 is 24 name another common denominator that you could use
bogdanovich [222]
You could also use 48 because 8 and 12 divide into it.
7 0
4 years ago
Find the error and explain why:
Sloan [31]

1)  9x + 2 = x + 5  ---> 9x + 2 = 6

subtracted X from one side but not the other

2) 3(x-4) + 5 = 12  ---> 3x + 4 + 5 = 12

didn't distribute correctly: 3(x-4)

multiplied the X by 3 but not the -4

5 0
3 years ago
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