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3 years ago

Whatss the Median??????????????????????///

Mathematics

1 answer:

Andrej [43]3 years ago

3 0

The median is the middle point in a dataset half of the data points are smaller than the median and half of the data points are larger. To find the median Arrange the data points from smallest to largest. If the number of data points is odd the median is the middle data point in the list.

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

5 0

3 years ago

Read 2 more answers

Carlos bought a $235 water heater with his credit card. He used the water heater for five years before replacing it. He paid off

Mazyrski [523]

First we will find the interest on:

P = $235 principal

t = 2 years

r = 0.1415 annual rate

A = future value

I = A - P the interest

A = P(1 + r)^t

A = 235(1 + 0.1415)^2

A = $306.21

I = A - P

I = $306.21 - $235

I = $71.21

the interest was $71.21.

Next lets find the lifetime cost value:

Lifetime cost value = 306.21 + 5*1.56*52 + 5*0.78*52 = $914.61 (considering that 1 year = 52 weeks)

Now lets find the percentage what percentage the interest is of the lifetime cost:

(71.21/914.61)*100 = 7.79%

← Previous ProblemNext Problem →

3 0

4 years ago

Fill in the missing equation

Valentin [98]

Start with y=mx+b

B is your y intercept
m is your slope

The points you have are (-1,4) and (1,-2)
To find the slow you Do Y2-Y1/X2-X1
(-2-4)/ (-1-1)
-6/-2
your m is 3

Now you go back to the equation of a Line y=mx+b
to find b (your y intercept) take on of the two points, and substitute it's y value in the equation Let's take (1,-2)

Y=mx+b
-2=3(1)+b
-2=3+b
b=-5

you now know that
b=-5
m=3x

The equation is
y=3x-5

7 0

3 years ago

Let x be the first factor in an expression in scientific notation. Describe the possible values of x.

Igoryamba

What are some problems that can occur when using overrides? Check all that apply.

The style guide may become cluttered.Text with overrides can’t be exported to other documents.Word won’t allow you to use more than 10 styles in a document.Text with the override won’t respond when changes are made to its original style.

6 0

3 years ago

There were 578 piglets and 234 adult pigs in the warehouse building yesterday. Today, 126 piglets were sold, and 46 piglets will

natima [27]

Answer:

=406 piglets in the warehouse

Step-by-step explanation:

578-126=452

452-46=406

5 0

3 years ago