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Lady bird [3.3K]
3 years ago
15

Find the value of X 7/x-10 = 3/6

Mathematics
2 answers:
DiKsa [7]3 years ago
6 0

Answer:

2/3

Step-by-step explanation:

nikdorinn [45]3 years ago
5 0

Answer:

2/3

Step-by-step explanation:

7/x -10 = 3/6

7/x =3/6 +10

7/x = 63/6

42 = 63x

x = 42/63 or 2/3

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The price of a sweatshirt at a local shop is twice the price of a pair of shorts. The price of a T-shirt at the shop is $4 less
fomenos

Answer:

The answer to your question is below

Step-by-step explanation:

Equation 1

                            $sweatshirt = 2 pair of shorts

                                    <u>  w = 2h</u>

Equation 2

$t-shirt = $pair of shorts  - $4

                                <u>      t = h - 4</u>

Equation 3

Total cost = 3 sweatshirts + 2 pairs of shorts + 5 t-shirts

<u>Total cost = 3w + 2h + 5t = 136 </u>    

5 0
4 years ago
Read 2 more answers
A rectangle and a parallelogram have the same base and the same height.
lidiya [134]

Answer:

equal to

Step-by-step explanation:

mark me brainlist

5 0
3 years ago
The graph of y = f(x) is shown. <br> a) Find f(0) <br> 4- <br> 3. <br> b) Give the roots of f(x) = 0
Amanda [17]

The value of f(0) is 1

and

The roots of f(x) = 0 are -2 and -1

<h3>Graph of a function</h3>

From the question, we are to determine the value of f(0) and the roots of f(x) = 0

The value of f(0) is the value of f(x) or the value of y when x = 0

In the given graph, we can observe that the value of y when x = 0 is 2

∴ f(0) = 2

The roots of f(x) = 0 correspond to the values of x when f(x) = 0 or when y = 0

In the graph, we can observe that the values of x when f(x) = 0 are -2 and -1

∴ The roots of f(x) = 0 are -2 and -1

Hence, the value of f(0) is 1

and

The roots of f(x) = 0 are -2 and -1

Learn more on Graph of a function here: brainly.com/question/21265554

#SPJ1

6 0
1 year ago
Please help! will mark brainliest!
Anit [1.1K]
Since you add 4 each time in the x values and 1 for the y values, the answer should be 1/4
7 0
3 years ago
An environmental engineer is tasked with determining whether a power plant cooling system is heating the water it uses more than
Tpy6a [65]

Answer:

1

The correct option is  b

2

The correct option is  h

Step-by-step explanation:

From the question we are told that

  The sample size is  n  = 15

   The difference in population proportion is d = 6

Generally the sample mean of the input temperature is  

     \= x_1  =  \frac{\sum x_i }{n}

=>  \= x_1  =  \frac{57.6 + 68.9 + \cdots +60.4  }{15}

=>  \= x_1  = 62.57

Generally the sample mean of the output temperature is  

     \= x_2  =  \frac{\sum x_i }{n}

=>  \= x_2  =  \frac{65.1 + 74.4 + \cdots +67.3 }{15}

=>  \= x_2 = 55.97

Generally the difference of the sample mean of the input temperature and that of the output temperature is  

     \= d  =  \= x_1  - \= x_2

=>  \= d  =  62.57 -55.97

=>  \= d  =  6.6

Generally the standard deviation is mathematically represented as

     s_d  =  \sqrt{\frac{\sum(d_1 - \= d )^2}{n} }

=>  s_d  =  \sqrt{\frac{([57.6- 65.1]- 6.6)^2+ ([68.9 - 74.4]- 6.6)^2 + \cdots +  ([60.4 -  67.3]- 6.6)^2 }{15} }

=>  s_d  = 1.732 [/texGenerally the test statistics is mathematically represented as       [tex]t  =  \frac{ d - \= d  }{ \frac{s_d}{\sqrt{n} } }

=>   t  =  \frac{ 6-6.6  }{ \frac{1.732}{\sqrt{15} } }

=>   t  =  1.3417

Generally the degree of freedom is mathematically represented as

    df =  n -  1

=>  df =  15 -  1

=>  df =  14

Generally the probability of t obtained from the t - distribution table at a degree of freedom of  df =  14 is  

      P(t >1.3417 )  =  0.10052569

Generally the p-value is mathematically represented as

      p-value  =  2 *  P(t >  1.3417)

=>    p-value  =  2 *   0.10052569

=>   p-value  =  0.201

From the values obtained we see that p-value  >  \alpha hence

The decision rule is  

Fail to  reject the null hypothesis

The conclusion is  

The cooling system changes the temperature of the water by 6 degrees.

 

8 0
3 years ago
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