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Vilka [71]
2 years ago
14

If 20 is added to one-third of a number, the result is the double of the number. What is the number?

Mathematics
2 answers:
olganol [36]2 years ago
6 0
One third of an unknown number is \frac{1}{3} x.  The word "of" means to multiply.  So if we add 20 to that, and it is equal to double the unknown (that is 2x), the equation looks like this: 20+ \frac{1}{3}x=2x.  Start by multiplying everything by 3 to get rid of the fraction and get 60 + x = 6x.  Now subtract an x from both sides and get 60 = 5x and x = 12.  So the number is 12
Thepotemich [5.8K]2 years ago
3 0
1/3 of an unknown number is 1/3x.  The word "of" lets us know to multiply.  So if we add 20 to that, and it is equal to double x (that is 2x), the equation looks like this: 

1. Start by multiplying everything by 3 to get rid of the fraction and get 20 + 1/3x = 2x.
2. Now subtract an x from both sides and get 60 = 5x and x = 12. 
So the answer is 12
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sattari [20]

Answer:

$8.4375 per game

Step-by-step explanation:

From. The picture attached :

Season long Ticket cost for the bleachers sitting area is : $810

Given that the number of home games in a season is 96

The cost per unit of game could be calculated as :

Cost of season long Ticket / number of home games

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= $8.4375

$8.4375 per game

5 0
3 years ago
Solve the exponential equation: 2^3x+1 = 128
dsp73

Answer:

So x=2.32956156226

Step-by-step explanation:

First subtract 1 on both sides

2^3x=127

Now you can rewrite this as

(2^3)^x

As it still equals the same thing

Now 2^3 is 8

So the equation is now

8^x=127

So we use log formula

log8 127=x

So how many times do we have to multiply 8 by itself to get 127?

The answer is: 2.32956156226

Hope this helps!

3 0
2 years ago
In how many ways can aling rosa arrange 6 potted plants in a row?
horsena [70]
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3 0
3 years ago
Read 2 more answers
Y=4x+8<br> Y=5x+1<br><br> I cant figure out this math problem
Crank
If solving for x:
Because both equations are equal to Y, you can set both equations equal to each other:
5x+1=4x+8
Then it's a matter of simplification (subtract the 4x to the left side and subtract the 1 over to the right):
x=7
If solving for Y:
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4 0
2 years ago
Simplify 12x to the power of 7 y to the power of 3 divided by 6x to the power of 3 y
Galina-37 [17]

Answer:

2x⁴y²

Step-by-step explanation:

The question gives us the expression;

12x⁷y³ ÷ 6x³y

We are supposed to simplify the expression;

First we could divide the digits;

12 ÷ 6 = 2

Then we divide the like terms;

x⁷ ÷ x³

This means;

=\frac{x*x*x*x*x*x*x }{x*x*x}

= x*x*x*x

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y³ ÷ y

That is;

=\frac{y*y*y}{y}

=y*y

=y^2

Therefore, the simplified expression will be 2x⁴y²

7 0
3 years ago
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