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3 years ago

5(2x+1)=3(x+4)-5. What is x

Mathematics

1 answer:

hoa [83]3 years ago

6 0

Answer:

x = 2/7

Step-by-step explanation:

isolate the variable by dividing each side by factors that don't contain the variable

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6- 6x^2- 3x = 0 solve

VARVARA [1.3K]

Answer:

The solutions are $x=\frac{3)+\sqrt{153} }{-12}$ , $x=\frac{3)-\sqrt{153} }{-12}$

If you need to have them in a decimal form rounded to 3 decimals, the answers would be $x=-1.281$ , $x=0.781$

Step-by-step explanation:

We are given the equation $6-6x^2-3x=0$

The first thing that can be done is to rearrange the terms so that they are in descending order of power. This makes it easier to work with

This gives us $-6x^2-3x+6=0$

To find the solutions to this equation, we can use the quadratic formula, which will tell us that the solutions are equal to $\frac{-b+\sqrt{b^2-4ac} }{2a} ,\frac{-b-\sqrt{b^2-4ac} }{2a}$

From our equation, we can gather that $a=-6, b=-3, c=6$

Now that we have our variables, we can plug them into the quadratic formula to get our solutions.

$\frac{-(-3)+\sqrt{(-3)^2-4(-6)(6)} }{2(-6)}\\\\\frac{3)+\sqrt{9+144} }{-12}\\\\\frac{3)+\sqrt{153} }{-12}$

And now for our second equation

$\frac{-(-3)-\sqrt{(-3)^2-4(-6)(6)} }{2(-6)}\\\\\frac{3)-\sqrt{9+144} }{-12}\\\\\frac{3)-\sqrt{153} }{-12}$

3 0

3 years ago

A ball is thrown vertically upward. After t seconds, its height h (in feet) is given by the function =ht−64t16t2. After how long

nata0808 [166]

Answer: 0.125 seconds

5 0

3 years ago

42 is 30% of what number

max2010maxim [7]

30%
percent means parts out of 100 so 30%=30/100=3/10

42 is 3/10 of x
'of' can be translated to multiply
42=3/10 times x
multiply both sides by 10/3 to get rid of fraction
420/3=x
140=x

the number is 140

6 0

3 years ago

Read 2 more answers

HELPPPPPPPPPPPPPPP Meeeee

Minchanka [31]

Answer:

i dont know sry bro

Step-by-step explanation:

8 0

3 years ago

Evaluate ((-5)-(-7)-(3))x(-10)

pychu [463]