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andrezito [222]
3 years ago
7

For what value of x do the expressions 2/3x + 2 and 4/3x -6 have the same value

Mathematics
1 answer:
Masteriza [31]3 years ago
5 0
<h2>The value of x = - \dfrac{10}{3}</h2>

Step-by-step explanation:

The given expressiona are:

\dfrac{2}{3x+2} and \dfrac{4}{3x-6}

To find, the value of x = ?

∴  \dfrac{2}{3x+2}=\dfrac{4}{3x-6}

By crossmultiplication, we get

4(3x + 2) = 2(3x - 6)

⇒ 12x + 8 = 6x - 12

⇒ 12x - 6x =  - 12 - 8

⇒ 6x = - 20

⇒ 3x = - 10

⇒ x = - \dfrac{10}{3}

∴ The value of x = - \dfrac{10}{3}

Thus, the value of x is equal to - \dfrac{10}{3}.

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the perimeter of a rectangle is 70 inches. the length of a rectangle is 5 less than 3 times its width. what is the witdth of the
Virty [35]

Answer:

The width is 10 inches

Step-by-step explanation:

Perimeter = 2(Length + Breadth)

Length(L) = 3B + 5

Perimeter = 70

70 = 2(3B + 5)

70 = 6B + 10

70 - 10 = 6B

60 = 6B

60/6 = B

B = 10 inches

4 0
3 years ago
The perimeter of a square is 75 inches. What is the length of one side of the square?
bulgar [2K]

Answer:

18.75 inches

Step-by-step explanation:

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3 years ago
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A truck traveled 232 miles in 4 hours. The truck continued traveling at the same average speed. How many miles,
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Answer:

319 miles.

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3 years ago
A merchant has coffee worth $20 a pound that she wishes to mix with 70 pounds of coffee worth $90 a pound to get a mixture that
Dvinal [7]

Let us start with assuming the amount of coffee worth $20 a pound to be "x" pounds.

Now she wants to mix "x" pounds of $20 coffee with 70 pounds of $90 coffee.

So the mixture would be (x + 70) pounds.

And the value of mixture would be = 20·x + (90)·(70) = (20x + 6300) dollars.

She want to sell this mixture at rate of $30 a pound. Her earning would be = 30·(x + 70) = (30x + 2100) dollars.

We know that the value of mixture would be equal to her earnings.

30x + 2100 = 20x + 6300

30x - 20x = 6300 - 2100

10x = 4200

x = 420

So, 420 pounds of $20 coffee would be used.

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3 years ago
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A rectangular prism have the dimensions, 3.5ft by 4ft by 5.2 ft. What is the volume of this 2
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Answer:

Step-by-step explanation:

The units are cubic feet or ft^3

V = L * W * H

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All dimensions are in feet.

V = 5.2 * 4 * 3.5

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