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blsea [12.9K]
4 years ago
6

What value for x is in the solution set of 2 (3x -1)>4x - 6

Mathematics
1 answer:
Snezhnost [94]4 years ago
8 0
The answer is -2, but that's not an answer choice. Make sure you wrote all of the answer choices and problem correctly.
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Explain how to solve systems of linear equations by substitution.
lions [1.4K]

Answer:

Step 1 : First, solve one linear equation for y in terms of x .

Step 2 : Then substitute that expression for y in the other linear equation.

Step 3 : Solve this, and you have the x -coordinate of the intersection.

Step 4 : Then plug in x to either equation to find the corresponding y -coordinate.

Step-by-step explanation:

7 0
3 years ago
Use f’( x ) = lim With h ---> 0 [f( x + h ) - f ( x )]/h to find the derivative at x for the given function. 5-x²
beks73 [17]
<h2>Answer:</h2>

The derivative of the function f(x) is:

                 f'(x)=-2x

<h2>Step-by-step explanation:</h2>

We are given a function f(x) as:

f(x)=5-x^2

We have:

f(x+h)=5-(x+h)^2\\\\i.e.\\\\f(x+h)=5-(x^2+h^2+2xh)

( Since,

(a+b)^2=a^2+b^2+2ab )

Hence, we get:

f(x+h)=5-x^2-h^2-2xh

Also, by using the definition of f'(x) i.e.

f'(x)= \lim_{h \to 0} \dfrac{f(x+h)-f(x)}{h}

Hence, on putting the value in the formula:

f'(x)= \lim_{h \to 0} \dfrac{5-x^2-h^2-2xh-(5-x^2)}{h}\\\\\\f'(x)=\lim_{h \to 0} \dfrac{5-x^2-h^2-2xh-5+x^2}{h}\\\\i.e.\\\\f'(x)=\lim_{h \to 0} \dfrac{-h^2-2xh}{h}\\\\f'(x)=\lim_{h \to 0} \dfrac{-h^2}{h}+\dfrac{-2xh}{h}\\\\f'(x)=\lim_{h \to 0} -h-2x\\\\i.e.\ on\ putting\ the\ limit\ we\ obtain:\\\\f'(x)=-2x

      Hence, the derivative of the function f(x) is:

          f'(x)=-2x

3 0
3 years ago
Read 2 more answers
A microwave cost 200 plus 20% VAT what is the total price ​
iris [78.8K]

Answer:

Total price = 240

Step-by-step explanation:

a microwave cost = 200

20% of 200 = 20/100 x 200 = 40

total price ​= 200 plus 20% VAT = 200 + 40 = 240

7 0
3 years ago
Can somebody help me with this math question?
Sliva [168]

Answer: UV and TW

Step-by-step explanation:

They do not intersect and they are not parallel, hope this helps!

<!> Brainliest is appreciated! <!>

5 0
3 years ago
What is the slope of this line?<br><br> −3<br> 4<br> −3/4<br> 3/4
FinnZ [79.3K]
As you can see, this is a negative slope. It goes down three and over four, as seen on the x and y intercepts. The answer kind of pops out at you.
7 0
3 years ago
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