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2 years ago

Help I will mark brainlist

Mathematics

1 answer:

Sophie [7]2 years ago

5 0

Correct answer is B. X<3

Explanation: I used photo math

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Prime factorization to find the lcm and gcf of 86,42

Nadya [2.5K]

LCM is 86...............

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2 years ago

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

5 0

2 years ago

Read 2 more answers

Factors of 28 and 44

erastovalidia [21]

28= 1,2,4,7,14,28,

44=1,2,4,11,22,44,

5 0

2 years ago

Write the equation of the line that passes through the points

Strike441 [17]

Answer:

y= -1/2x +5.5

Step-by-step explanation:

hope this helps :)

4 0

2 years ago

Paul bought a student discount card for the bus. The card allows him to buy daily bus passes for $1.50.

Marta_Voda [28]

Answer:

Step-by-step explanation:

If you do 13x1.50= 19.5

28.50 - 19.5 = 9

7 0

2 years ago