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3 years ago

Does anyone know this answer ?

Mathematics

2 answers:

Arturiano [62]3 years ago

4 0

Answer:

10z + 5

Step-by-step explanation:

NeTakaya3 years ago

4 0

If I’m not mistaken I think is the first one

10z + 5

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What are the zeros of the quadratic function f(x) = 2x2 – 10x – 3?

Natasha2012 [34]

Answer:

$x=\frac{50+\sqrt{31}}{2},\frac{50-\sqrt{31}}{2}$ are zeroes of given quadratic equation.

Step-by-step explanation:

We have been a quadratic equation:

$2x^2-10x-3$

We need to find the zeroes of quadratic equation

We have a formula to find zeroes of a quadratic equation:

$x=\frac{b^2\pm\sqrt{D}}{2a}\text{where}D=\sqrt{b^2-4ac}$

General form of quadratic equation is $ax^2+bx+c$

On comparing general equation with b given equation we get

a=2,b=-10,c=-3

On substituting the values in formula we get

$D=\sqrt{(-10)^2-4(2)(-3)}$

$\Rightarrow D=\sqrt{100+24}=\sqrt{124}$

Now substituting D in $x=\frac{b^2\pm\sqrt{D}}{2a}$ we get

$x=\frac{(-10)^2\pm\sqrt{124}}{2\cdot 2}$

$x=\frac{100\pm\sqrt{124}}{4}$

$x=\frac{100\pm2\sqrt{31}}{4}$

$x=\frac{50\pm\sqrt{31}}{2}$

Therefore, $x=\frac{50+\sqrt{31}}{2},\frac{50-\sqrt{31}}{2}$

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3 years ago

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Solve for x round to the nearest tenth<br>

alisha [4.7K]

Answer:

13.7

Step-by-step explanation:

a^2+b^2=c^2. 9.2^2 +x=16.5^2 x=16.5^2-9.2^2. x=root187.61 which is 13.7.

Hope this helps plz mark brainliest :D

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3 years ago

I need help ASAP please and thank you

Leokris [45]

Y= 0.5x - 1
It might be written as half x like 1/2

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I think the answer is a

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4 years ago

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murzikaleks [220]

What is the problem? Is there isn't a problem, do you just what help for a test?

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