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Lady bird [3.3K]
3 years ago
5

Evaluate the following expression when x = 3 and y = 4:

Mathematics
1 answer:
JulijaS [17]3 years ago
5 0
I don't understand.  What are the values given?  Are they values of an x,y plot?
If you plot them they are a straight line with y =6x - 2.9  but I don't know what you mean by when x=3 and y = 4?

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Complete the solution of the equation. fine the value of y when x equals 4.
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y = - 5

substitute the value of x = 4 into the equation and solve for y

- 12 + 9y = - 57 ( add 12 to both sides )

9y = - 45 ( divide both sides by 9 )

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Complete the solution of the equation. find the value of y when x equals 1. <br><br>9x +7y= -12​
Taya2010 [7]

Answer:

y=-3

Step-by-step explanation:

Given Equation:  

                            9x +7y=-12\\             y=?       at    x= 1

Putting the given value of 'x' in the equation:

                            9(1) +7y=-12\\\\9+7y=-12\\\\7y=-12-9\\\\7y=-21\\\\y=-\frac{21}{7} \\y=-3

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6 0
3 years ago
Tan30°+cos30°÷tan30°×cos30°​
jonny [76]

Answer:

{1/√3+1/2} ÷{1/√3× 1/2}

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bixtya [17]

Answer:

Triangles

Step-by-step explanation:

  1. Angle b
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