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Naddik [55]
4 years ago
5

Please help I confused with this one

Mathematics
1 answer:
Nady [450]4 years ago
8 0

Answer:

(3.75, 5.5)

Step-by-step explanation:

Please see attached picture for full solution.

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Sally goes out to lunch and has the option of a soup or a salad and then a turkey, ham, or club sandwich. Which tree diagram cor
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The answer should be B 



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What is x in the equation 753.6=(3.14)(6)^2(x)
vichka [17]

Answer:

 x = 20/3 = 6.667

Step-by-step explanation:

Changes made to your input should not affect the solution:

(1): "3.14" was replaced by "(314/100)". 2 more similar replacement(s)

Rearrange:

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

          (7536/10)-(((314/100))*(6)^2*(x))=0

Step by step solution :

Step  1  :

1.1     6 = 2•3

(6)2 = (2•3)2 = 22 • 32

Equation at the end of step  1  :

 7536      314

 ———— -  ((——— • (22•32)) • x)  = 0

  10       100

Step  2  :

           157

Simplify   ———

           50

Equation at the end of step  2  :

 7536      157

 ———— -  ((——— • (22•32)) • x)  = 0

  10       50

Step  3  :

Dividing exponents :

3.1    22   divided by   21   = 2(2 - 1) = 21 = 2

Equation at the end of step  3  :

 7536     2826

 ———— -  (———— • x)  = 0

  10       25

Step  4  :

           3768

Simplify   ————

            5  

Equation at the end of step  4  :

 3768    2826x

 ———— -  —————  = 0

  5       25  

Step  5  :

Calculating the Least Common Multiple :

5.1    Find the Least Common Multiple

     The left denominator is :       5

     The right denominator is :       25

       Number of times each prime factor

       appears in the factorization of:

Prime

Factor   Left

Denominator   Right

Denominator   L.C.M = Max

{Left,Right}

5 1 2 2

Product of all

Prime Factors  5 25 25

     Least Common Multiple:

     25

Calculating Multipliers :

5.2    Calculate multipliers for the two fractions

   Denote the Least Common Multiple by  L.C.M

   Denote the Left Multiplier by  Left_M

   Denote the Right Multiplier by  Right_M

   Denote the Left Deniminator by  L_Deno

   Denote the Right Multiplier by  R_Deno

  Left_M = L.C.M / L_Deno = 5

  Right_M = L.C.M / R_Deno = 1

Making Equivalent Fractions :

5.3      Rewrite the two fractions into equivalent fractions

Two fractions are called equivalent if they have the same numeric value.

For example :  1/2   and  2/4  are equivalent,  y/(y+1)2   and  (y2+y)/(y+1)3  are equivalent as well.

To calculate equivalent fraction , multiply the Numerator of each fraction, by its respective Multiplier.

  L. Mult. • L. Num.      3768 • 5

  ——————————————————  =   ————————

        L.C.M                25  

  R. Mult. • R. Num.      2826x

  ——————————————————  =   —————

        L.C.M              25  

Adding fractions that have a common denominator :

5.4       Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

3768 • 5 - (2826x)     18840 - 2826x

——————————————————  =  —————————————

        25                  25      

Step  6  :

Pulling out like terms :

6.1     Pull out like factors :

  18840 - 2826x  =   -942 • (3x - 20)

Equation at the end of step  6  :

 -942 • (3x - 20)

 ————————————————  = 0

        25      

Step  7  :

When a fraction equals zero :

7.1    When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.

Here's how:

 -942•(3x-20)

 ———————————— • 25 = 0 • 25

      25    

Now, on the left hand side, the  25  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

  -942  •  (3x-20)  = 0

Equations which are never true :

7.2      Solve :    -942   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation :

7.3      Solve  :    3x-20 = 0

Add  20  to both sides of the equation :

                     3x = 20

Divide both sides of the equation by 3:

                    x = 20/3 = 6.667

One solution was found :

                  x = 20/3 = 6.667

6 0
4 years ago
If the scores of a math test are normally distributed with an average score of 76 and a standard deviation of 5, what percentage
Afina-wow [57]

Answer:

Step-by-step explanation:

Since the scores of the math test are normally distributed, we would apply the formula for normal distribution which is expressed as

z = (x - µ)/σ

Where

x = math test scores.

µ = mean score

σ = standard deviation

From the information given,

µ = 76

σ = 5

The probability that a student scored below 65 is expressed as

P(x < 65)

For x = 65

z = (65 - 76)/5 = - 2.2

Looking at the normal distribution table, the probability corresponding to the z score is 0.014

The percentage of students that scored below 65 is

0.014 × 100 = 1.4%

7 0
4 years ago
What is the proportion of k/7=k+13/8?
Alona [7]
<span><span>K = k + 13</span><span>78</span></span> Cross multiply: K * 8 = 7 * k + 13 Simplifying K * 8 = 7 * k + 13 Reorder the terms for easier multiplication: 8K = 7 * k + 13 Reorder the terms: 8K = 7 * 13 + k 8K = 13 * 7 + k * 7 8K = 91 + 7k Solving 8K = 91 + 7k Solving for variable 'K'. Move all terms containing K to the left, all other terms to the right. Divide each side by '8'. K = 11.375 + 0.875k Simplifying K = 11.375 + 0.875k

there it was hard but i got it
7 0
4 years ago
Which expression can you use to find the area of the rectangle?
Darya [45]

Answer:

length x width

L * W

Step-by-step explanation:

6 0
3 years ago
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