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miskamm [114]
2 years ago
10

What is the value of x?​

Mathematics
1 answer:
masya89 [10]2 years ago
5 0

Answer:

Option D is correct.

Step-by-step explanation:

We can tell that

  • 4x + \frac{x}{2} + 2 + \frac{3x-4}{2} = 180

Now, let's simplify.

=> 4x + 2 + \frac{4x-4}{2} = 180

=> 4x + 2 + 2x-2 = 180

=> 4x + 2x = 180

=> 6x = 180

=> x = 30

Therefore, Option D is correct.

Hoped this helped.

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hammer [34]

2x +y = 20~~....(i)\\\\6x -5y = -4~~....(ii)\\\\\\\text{Multiply equation (i) by 3:}\\\\6x +3y = 60~~...(iii)\\\\(iii)-(ii):\\\\6x+3y - 6x+5y = 60-(-4)\\\\\implies 8y = 60+4 = 64\\\\\implies y = \dfrac{64}8\\\\\implies y = 8\\\\\\\text{Substitute y =8 in equation (i):}\\\\2x+8 =20\\\\\implies 2x = 20-8 = 12\\\\\implies x = \dfrac{12}2 = 6\\\\\text{Hence (x,y) = (6, 8)}

4 0
2 years ago
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An internet site requires a password with 2 digits (numbers) and 3 letters. How many possible passwords are there?
Llana [10]

Answer:

1,757,600

Step-by-step explanation:

26x26x26x10x10 = 1,757,600

5 0
3 years ago
A. what is the height of the st. louis arch?
Mrrafil [7]
The height is 630 feet. 
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3 years ago
What is the probability that the sum of the two dice is greater on the second roll?
barxatty [35]
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3 0
3 years ago
Please help with this?
Semmy [17]

Answer: Subtract 3 from each side of the equation(A)

Step-by-step explanation:

3n2−15n=3

1:Subtract 3n2 from both sides.

-15n=3-3n2

2:Divide both sides by -15.

-15n/-15=3-3n2/-15

3:Dividing by −15 undoes the multiplication by −15.

n=3-3n2/-15

4:Divide 3−3n 2 ​ by −15

n=n2-1/5

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4 0
2 years ago
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