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seraphim [82]
3 years ago
10

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

Mathematics
1 answer:
alexdok [17]3 years ago
8 0
3x-12= 3x + 7
+12 +12
3x = 3x + 19
-3x -3x
x = 19

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The area of a rectangle is 20 square inches. If the length is 4 inches less than 6 times the width, then find the dimensions of
Tpy6a [65]

Step-by-step explanation:

Let the width=x

Length =6x-4

As we know that in a rectangle

{\boxed{\sf Area=LB}}

  • Substitute the values

\hookrightarrow\sf x (6x-4)=20

\hookrightarrow\sf 6x^2-4x=20

\hookrightarrow\sf 6x^2-4x-20=0

  • Here a=6, b=-4, c=-20.
  • use quadratic formula

\hookrightarrow\sf x=\dfrac {1}{3}+\dfrac {1}{3}\sqrt {31} \quad or \quad \dfrac {1}{3}+\dfrac {-1}{3}\sqrt {31}

8 0
3 years ago
Polygon R and polygon S are similar. The perimeter of polygon R is 136 cm, and the perimeter of polygon S is 64 cm. If one side
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<u>Answer </u>

Option A) 17cm

<u>Explanation </u>

Polygon R and polygon S are similar. This means the polygon R and S have equal number of sides.

Step 1 : Find the number of sides of polygon S

The perimeter of polygon S is 64 cm. If one side of polygon S is 8 cm

Therefore, Number of sides of polygon S = 64/8 = 8 sides

and number of sides of polygon R = 8 side

Step 2 : Find the number of sides of polygon R

The perimeter of polygon R is 136 cm,  

Number of sides of polygon R = 136/8 = 17 cm

Therefore side length of  polygon R = 17 cm

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4 years ago
Why do you sometimes only have one multiplication sentence for an array
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4 years ago
Which is the best estimate for the quotient of 404.31 devided by 48.031 ? A. 8,000 B. 800 C. 80 D. 8 Help me plz
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6 0
4 years ago
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HELP PLEASE<br> Will give brainliest
Alenkasestr [34]

Answer:

=7x^2+8x-2

Step-by-step explanation:

So, on Monday, Tuesday, and Wednesday, he mowed:

(4x^2+3x-4),(5x-8),(3x^2+10)

yards, respectively.

To determine how many yards he mowed in the three days, simply add the three expressions. Thus:

(4x^2+3x-4)+(5x-8)+(3x^2+10)

Combine like terms:

=(4x^2+3x^2)+(3x+5x)+(-4-8+10)

Add or subtract:

=7x^2+8x-2

And it cannot be simplified further :)

6 0
3 years ago
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