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ivanzaharov [21]
3 years ago
14

Solve the quadratic equation: 3x2 + x - 5 = 0

Mathematics
1 answer:
Yuri [45]3 years ago
8 0

Hey there!

3x^2 + x -5 = 0

This equation is in standard form, which is ax^2+bx+c=0.

We are going to solve this with the quadratic equation, so we need to find the values for a, b, and c in the given equation. We can just look at it and identify the variables.

a = 3, b = 1, c = -5

Let's plug these values into the quadratic equation:

x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}

x=\frac{-1\pm\sqrt{1^2-4(3)(-5)} }{2(3)}

Multiply 4(3)(-5) together and multiply 2(3). Square 1.

x=\frac{-1\pm\sqrt{1+60} }{6}

Add 1 and 60.

x=\frac{-1\pm\sqrt{61} }{6}

This is our answer in exact form. If you need this as an approximate value, let me know and I will do that for you.

Hope this helps!

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-10(10x-12)=-9(-9x-2)-5
Viefleur [7K]

10(10x−12)=−9(−9x−2)−5
Step 1: Simplify both sides of the equation.
−10(10x−12)=−9(−9x−2)−5
(−10)(10x)+(−10)(−12)=(−9)(−9x)+(−9)(−2)+−5(Distribute)
−100x+120=81x+18+−5
−100x+120=(81x)+(18+−5)(Combine Like Terms)
−100x+120=81x+13
−100x+120=81x+13
Step 2: Subtract 81x from both sides.
−100x+120−81x=81x+13−81x
−181x+120=13
Step 3: Subtract 120 from both sides.
−181x+120−120=13−120
−181x=−107
Step 4: Divide both sides by -181.
−181x
−181
=
−107
−181
x=
107
181
Answer:
x=
107
181

7 0
3 years ago
Read 2 more answers
NEED HELP ASAP! Brainliest is only given to the RIGHT answer!
vladimir2022 [97]

Answer:

c is the correct answer

2(2x+4)<6(x+3)

Step-by-step explanation:

7 0
2 years ago
Help meeeee please. ‼️‼️‼️‼️
KatRina [158]

Step-by-step explanation:

look at the picture !

she has to paint actually 6 rectangles :

the 3 tops of the 3 stairs.

and the 3 vertical front boards (the front of each step of the stairs).

what is the area of these rectangles ? summing up all 6 - that is the surface area to be painted.

each top rectangle is clearly

82×19 (19 cm deep) = 1558 cm²

each front board is

82×12 (12 cm high) = 984 cm²

so, in total we have

3×1558 + 3×984 = 4674 + 2952 = 7626 cm²

as surface area to be painted.

8 0
2 years ago
N the recursive formula f(n) = f(n - 1) + 5, the value of the previous term is represented by
eimsori [14]
F(n-1) = f(n) - 5, based off of the first one
3 0
3 years ago
The fraction
anzhelika [568]
0.17 because its in the hundredths place
3 0
3 years ago
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