All categories

3 years ago

CAN SOMEONE PLEASE HELP ME????

Mathematics

1 answer:

pochemuha3 years ago

4 0

Answer:

$C.\{-4,-2,~0,~2,~4\}$

Step-by-step explanation:

$Greetings!$

$I'm~Isabelle~Williams~and~I~will~be~answering~your~question!$

$I~know~you~asked~for~only~the~domain,~but~just~in~case~I'll~type~down~the~range~\\too:$

$The~ domain ~is ~the ~set~ of~ all ~the~ values ~of ~x. ~The~ range~ is~ the~ set~ of~ all ~the ~values \\~of ~y.$

$Domain:\{-4,-2,~0,~2,~4\}$

$Range:\{-1,~1,~3,~0\}$

$Thus,~making~the~3^r^d~option~correct!$

$Hope~this~helps!~Have~an~amazing~day!$

$-Isabelle~Williams$

You might be interested in

1.) Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth .x squared minus 21 x equals n

Andrew [12]

Part 1
We are given $x^2-21x=-4x$ . This can be rewritten as $x^2-18x=0$ .
Therefore, a=1, b=-18, c=0.
Using the quadratic formula
$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}=\frac{-\left(-18\right)\pm \sqrt{\left(-18\right)^2-4\left(1\right)\left(0\right)}}{2\left(1\right)}$
$x=\frac{18\pm 18}{2}$

The values of x are
$x_1=\frac{18-18}{2}=0$
$x_2=\frac{18+18}{2}=18$

Part 2
Since the values of y change drastically for every equal interval of x, the function cannot be linear. Therefore, the kind of function that best suits the given pairs is a quadratic function.

Part 3.
The first equation is $y=x^2+2$ .
The second equation is $y=3x+20$ .

We have
$x^2+2=3x+20$
$x^2-3x-18=0$
Factoring, we have
$\left(x-6\right)\left(x+3\right)=0$
Equating both factors to zero.
$x_1-6=0\rightarrow x_1=6$
$x_2+3=0\rightarrow x_2=-3$

When the value of x is 6, the value of y is
$y=3\left(6\right)+20=38$

When the value of x is -3, the value of y is
$y=3\left(-3\right)+20=11$

Therefore, the solutions are (6,38) or (-3,11)

7 0

3 years ago

The price of a cycle is reduced by 25 per cent. The new price is reduced by a further 20 per cent. The two reductions together a

alexandr402 [8]

$100\%-25\%=75\%=\frac{75}{100}=0.75\\\\100\%+20\%=120\%=\frac{120}{100}=1.2\\\\1.2\cdot0.75=0.9=0.9\cdot100\%=90\%\\\\100\%-90\%=10\%\\\\Answer:Single\ reduction\ is\ 10\%.$

6 0

3 years ago

ماThe circumference of a circle is 7pie m.<br> What is the area of the circle?

Tresset [83]

Answer:

12.25 $\pi$ sq m

Step-by-step explanation:

if circumference is 7 $\pi$ then the diameter is 7

Area = $\pi$ r²

A = (3.5)² $\pi$

A = 12.25 $\pi$

7 0

2 years ago

2. Consider the following dot plot and answer the following questions : A. Find the measures of central tendency Construct the B

zubka84 [21]

The measures of central tendency for this data set are as follows:

Mean = 3.55.
Median = 3.5.
Mode = 3.

<h3>How to calculate measures of central tendency?</h3>

In Mathematics, there are three (3) main measures of central tendency and these include the following:

Mean

Median

Mode

For the mean, we have:

Mathematically, the mean for this data set would be calculated by using this formula:

Mean = [F(x)]/n

For the total number of data, we have:

F(x) = 0 + 1 + 1 + 1 + 2 + 2 + 3 + 3 + 3 + 3 + 4 + 4 + 4 + 5 + 5 + 5 + 6 + 6 + 6 + 7

F(x) = 71

Substituting the parameters into the formula, we have:

Mean = [F(x)]/n

Mean = 71/20

Mean = 3.55.

For the median, we have:

First of all, we would order the data from lowest to highest and then determine the median as follows:

Data = {0, 1, 1, 1, 2, 2, 3, 3, 3,} 3, 4, {4, 4, 5, 5, 5, 6, 6, 6, 7}

Median = {3 + 4}/2

Median = 7/2

Median = 3.5.

<h3>How to calculate the mode?</h3>

A mode refers to the most frequently occurring number in a data set. Thus, the mode for this data set is equal to 3.

In conclusion, a box plot of the measures of central tendency for this data set is shown in the image attached below.

Read more on mean here: brainly.com/question/9550536

#SPJ1

6 0

2 years ago

Answer for immediate brainliest

Goryan [66]

Answer:

some

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers