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sasho [114]
2 years ago
5

How to get the answer for2x-12y=7,x=6y+9 substitution method

Mathematics
1 answer:
beks73 [17]2 years ago
7 0

Answer:

step 1. you see in the problem x = 6y + 9 substitue the equation for the x variable in the first equation. so it will be 2(6y+9) - 12y = 7

step 2. solve for y. butttt in this case it looks like it can't be solved .

Step-by-step explanation:

option 3. in the steps i provided  substituted x for x equals 6y + 9 which leads you to solve y. if you want you can rearrange 2x-12y=7 to solve for y so it would be  7-2x/-12 = 7

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Step-by-step explanation:

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314

Step-by-step explanation:

the formula to get the area of a circle is \pi r^{2}

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2 years ago
The average rate of change of g(x) between x = 4 and x = 7 is 5/6 . Which statement must be true?
Blizzard [7]

Answer:

\frac{5}{6}=\:\frac{g\left(7\right)-g\left(4\right)}{7-4}  would be the correct statement.

Step-by-step explanation:

As we know that

Average rate of change = Change in output / Change in input    

                                        =  Δy  / Δx

                                        =\frac{y_{2} -y_{1}}{x_{2} -x_{1}}

                                        =\frac{g(x_{2})-g(x_{1})}{x_{2}-x_{1}}

                                         =\frac{g(7)-g(4)}{7-4}                    

As the average rate of change of g(x) between x = 4 and x = 7 is 5/6.

so

\:Average\:rate\:of\:change\:=\:\frac{g\left(7\right)-g\left(4\right)}{7-4}

                                  \frac{5}{6}=\:\frac{g\left(7\right)-g\left(4\right)}{7-4}

Therefore, \frac{5}{6}=\:\frac{g\left(7\right)-g\left(4\right)}{7-4}  would be the correct statement.                      

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3 years ago
What is the solution to the system of equation
maksim [4K]

Answer:

D. (2 , 1)

Step-by-step explanation:

STEP 1: Replace all occurrences of y with -3x+7 in each equation.

-x+14=12\\y=-3x+7

STEP 2: Solve for x in the first equation.

x=2\\y=-3x+7

STEP 3: Replace all occurrences of x with 2 in each equation.

y=1\\x=2

4 0
3 years ago
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