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Ronch [10]
3 years ago
7

3(4x + 10) = 12x + 20How many solutions does this equation have ?​

Mathematics
1 answer:
Damm [24]3 years ago
7 0
There’s No solution
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Easy question. giving brainliest<br> 7g+8(6g+3)=849<br><br> g=
vlabodo [156]

Answer:

g = 15

Step-by-step explanation:

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    7*g+8*(6*g+3)-(849)=0  

Step by step solution :

Step  1  :

Step  2  :

Pulling out like terms :

2.1     Pull out like factors :

  6g + 3  =   3 • (2g + 1)  

Equation at the end of step  2  :

 (7g +  24 • (2g + 1)) -  849  = 0  

Step  3  :

Step  4  :

Pulling out like terms :

4.1     Pull out like factors :

  55g - 825  =   55 • (g - 15)  

Equation at the end of step  4  :

 55 • (g - 15)  = 0  

Step  5  :

Equations which are never true :

5.1      Solve :    55   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation :

5.2      Solve  :    g-15 = 0  

Add  15  to both sides of the equation :  

                     g = 15

Hope this helps

6 0
3 years ago
Read 2 more answers
What is the solution of the system? y=x^2 + 6x + 9
Katyanochek1 [597]

Because we have two values of x, we can set the two expressions equal to each-other.

x^2 + 6x + 9 = x + 3

Subtract x and 3 from both sides.

x^2 + 5x + 6 = 0

Now that we have all terms on one side, we can find the values of x.

Using the AC method, we can simplify this equation to (x + 2)(x + 3)

The solutions to the system of equations presented are:

<h3>x = -2, x = -3.</h3>
5 0
3 years ago
Please i need an urgent help doing this question help
Alecsey [184]
Sin (30°) = \frac{AB}{96}
AB = sin (30°) x 96 = 48cm
3 0
3 years ago
Prove: The square of a number that is
Nikolay [14]

Let 3<em>n</em> + 1 denote the "number" in question. The claim is that

(3<em>n</em> + 1)² = 3<em>m</em> + 1

for some integer <em>m</em>.

Now,

(3<em>n</em> + 1)² = (3<em>n</em>)² + 2 (3<em>n</em>) + 1²

… = 9<em>n</em>² + 6<em>n</em> + 1

… = 3<em>n</em> (3<em>n</em> + 2) + 1

… = 3<em>m</em> + 1

where we take <em>m</em> = <em>n</em> (3<em>n</em> + 2).

3 0
2 years ago
The manager of a fast-food restaurant determines that the average time that her customers wait for service is 3.5 minutes.The ma
Lana71 [14]

Answer:

The advertisement should use 16 minutes.

Step-by-step explanation:

Exponential distribution:

The exponential probability distribution, with mean m, is described by the following equation:

f(x) = \mu e^{-\mu x}

In which \mu = \frac{1}{m} is the decay parameter.

The probability that x is lower or equal to a is given by:

P(X \leq x) = \int\limits^a_0 {f(x)} \, dx

Which has the following solution:

P(X \leq x) = 1 - e^{-\mu x}

The probability of finding a value higher than x is:

P(X > x) = 1 - P(X \leq x) = 1 - (1 - e^{-\mu x}) = e^{-\mu x}

The manager of a fast-food restaurant determines that the average time that her customers wait for service is 3.5 minutes.

This means that m = 3.5, \mu = \frac{1}{3.5} = 0.2857

What number of minutes should the advertisement use?

The values of x for which:

P(X > x) = 0.01

So

e^{-\mu x} = 0.01

e^{-0.2857x} = 0.01

\ln{e^{-0.2857x}} = \ln{0.01}

-0.2857x = \ln{0.01}

x = -\frac{\ln{0.01}}{0.2857}

x = 16.12

Rounding to the nearest number, the advertisement should use 16 minutes.

5 0
3 years ago
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