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bazaltina [42]
3 years ago
10

Solve: 2x-7>3 or 4-x≤-4

Mathematics
2 answers:
SOVA2 [1]3 years ago
7 0

Steps to solve:

2x - 7 > 3

~Add 7 to both sides

2x > 10

~Divide 2 to both sides

x > 5

Steps to solve:

4 - x <= -4

~Subtract 4 to both sides

-x <= -8

~Divide -1 to both sides

x >= 8

Best of Luck!

fredd [130]3 years ago
3 0

Answer:

2x-7>3     ----->     x>5

4-x≤-4      ------>    x\geq 8

Step-by-step explanation:

2x-7>3

2x-7+7>3+7

2x>10

2x/2 > 10/2

x>5

4-x≤-4    

4-x-4 \leq -4-4

-x \leq -8

(-x)(-1) \geq (-8) (-1)

x \geq 8

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F (x) = x^2 + 2x - 5<br> g(x) = 2x + 4<br> What is (f• g)(x)?
Vilka [71]

Answer:

Step-by-step explanation:

This is a composite function, f(g(x)). This means, working from the inside function to the outside, we will take the function g and plug it in for x in the f function. g(x) = 2x + 4. We will plug that into f(x) and evaluate f(2x+4):

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f(g(x))=4x^2+16x+16+4x+8-5 which, by combining like terms, give us

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5 0
3 years ago
The solution of two linear equations is (-2,2). One equations has a slope of 3. The slope of the other equation is the negative
sineoko [7]

Answer:

Its true ⇒ answer (a)

Step-by-step explanation:

* The solution of two linear equation means that this solution

  is a solution for each equation

* To check if the point is a solution of an equation

- Substitute its coordinates in the equation, if the left hand side

 is equal the right hand side, then the point is a solution

 of this equation

* Lets study our problem

- (-2 2) is the solution of two linear equations

- The slope of one equation is 3

- The slope of the second equation is the negative reciprocal

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* Check the this conditions in the given equations

- In the equation y = 3x + 8 ⇒ the slope = 3

- In the equation y = -1/3 x + 4/3 ⇒ the slope = -1/3

* Now lets substitute the solution (-2 , 2) in the both equations

- First equation

∵ y = 2 ⇒ L.H.S

∵ 3(-2) + 8 = 2 ⇒ R.H.S

∵ L.H.S = R.H.S

∴ (-2 , 2) is a solution of the equation y = 3x + 8

- Second equation

∵ y = 2 ⇒ L.H.S

∵ (-1/3)(-2) + 4/3 = 2/3 + 4/3 = 6/3 = 2 ⇒ R.H.S

∵ L.H.S = R.H.S

∴ (-2 , 2) is a solution of the equation y = -1/3 x + 4/3

∴ (-2 , 2) is the solution of the two equations

* Its true

5 0
2 years ago
Read 2 more answers
How do u do this problem 1/2x-1/4y=10 1/8x-1/8y=19?
Blababa [14]
I hope this helps you

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2 years ago
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The answer is D. It is rarely stated explicitly
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