An Olympic swimmer competes in the same events during each long course swim season. A swimmer currently competing on the United States Women’s Olympic Swim Team, will swim her best events each year with the hope of continuous improvement. The following table is a record of the swimmer’s best times for the 100 meter freestyle event, measured in long course meters.
Long Course
Season Recorded
Best Time
2005 2:33.42
2006 2:24.81
2007 2:10.93
2008 2:03.45
2009 1:58.67
2010 1:59.17
2011 1:55.06
2012 1:55.82
2013 1:54.81
2014 2:00.03
Create a scatter plot representing the data displayed in the table.
Use the scatter plot to determine whether there is positive, negative or no correlation between the data values.
Write a conclusion statement regarding the data and the rate of change present in the line of best fit. Do not actually calculate the slope or write the equation for the line of best fit.

Hello there! The correct answer is C. The electric car is not moving at 0 seconds and 12 seconds.

In the question description it says that y represents the car's speed in miles. Now looking back at the chart, wherever the x values are at when y = 0, the car isn't moving at this time, because if the car is going at 0 miles per hour, it is not moving. Looking at the chart, you can see the car is going 0 miles per hour when x = 0 and x = 12. This means that C is your answer.

I hope this helps and have a great day!

A statement that is true about this situation include the following: C. The electric car is not moving at 0 seconds and 12 seconds.

In Mathematics and Geometry, speed is the distance covered by a physical object per unit of time. This ultimately implies that, the speed of any a physical object can be calculated by using this formula;

Speed = distance/time

Generally speaking, a physical object is considered as being static (not moving or in motion) when its speed is equal to zero (0).

In this context, we can reasonably infer and logically deduce that this new electric car is not moving at 0 seconds and 12 seconds because the speeds (y-avlues) at this time interval are equal to zero (0).

Complete Question;

Marcel is performing the first test on his company's new electric car During the test, the electric car reaches a maximum speed of 81 mph.

The performance test results of the electric car can be modeled by the following table, where x represents time, in seconds at the start of the test, and y represents the speed, in miles per hour.

Which of the following statements is true about this situation?

A. The electric car is not moving at 6 seconds and 12 seconds.

B. The electric car is not moving at 4 seconds and 8 seconds.

C. The electric car is not moving at 0 seconds and 12 seconds

D. The electric car is not moving at 0 seconds and 6 seconds

the answer would be 0.08333… or 1/12

(from my own work it would be ,I'm not saying its right or wrong though)

The probability that Terry randomly chooses an outfit with black pants and a yellow shirt is 1 out of 12, calculated by dividing the number of favorable outcomes (1) by the total possible outcomes (12).

The question revolves around basic probability. Terry has three pairs of pants and four shirts, meaning there are a total of 3 x 4 = 12 possible outfits. Since only one outfit consists of black pants and a yellow shirt, the probability of selecting this combination is therefore 1 out of 12.

The formula used to calculate this probability is the number of favorable outcomes divided by the total number of possible outcomes. In this case, the favorable outcome (black pants with a yellow shirt) is just one, and the total number of possible outfits is twelve.

Answer:

If y=2x+7 were changed to y=5x+7, then the graph of the new function would be steeper than the graph of the original function. On the other hand, the y-intercept would be unchanged; ( 0, 7)

Step-by-step explanation:

If y=2x+7 were changed to y=5x+7, then the graph of the new function would be steeper than the graph of the original function. On the other hand, the y-intercept would be unchanged; ( 0, 7)

I think the answer is 52.5.

Answer: 800

Step-by-step explanation:

Answer: 2.74 m

Step-by-step explanation:

You need to make the following conversions:

[tex](6dm)(\frac{1m}{10m})=0.6m[/tex]

[tex](40mm)(\frac{1m}{1,000mm})=0.04m[/tex]

[tex](10cm)(\frac{1m}{100cm})=0.1m[/tex]

Now you need to add all the values to get the sum. This is:

[tex]0.6m+0.04m+2m+0.1m=2.74m[/tex]

[tex]\bf \cfrac{1}{3}~~,~~\stackrel{\frac{1}{3}(3)}{1}~~,~~\stackrel{1(3)}{3}~~,~~\stackrel{3(3)}{9}~~...\qquad \qquad \impliedby \textit{3 is the common ratio} \\\\[-0.35em] ~\dotfill[/tex]

[tex]\bf n^{th}\textit{ term of a geometric sequence} \\\\ a_n=a_1\cdot r^{n-1}\qquad \begin{cases} n=n^{th}\ term\\ a_1=\textit{first term's value}\\ r=\textit{common ratio}\\[-0.5em] \hrulefill\\ r=3\\ a_1=\frac{1}{3}\\ n=10 \end{cases}\implies a_{10}=\cfrac{1}{3}\left(3^{10-9} \right) \\\\\\ a_{10}=\cfrac{1}{3}\cdot 3^9\implies a_{10}=\cfrac{1}{3}\cdot 19683\implies a_{10}=6561[/tex]

Answer:

19683

Step-by-step explanation:

Answer:

x = 4, y = 1

Step-by-step explanation:

Given the 2 equations

4x + y = 17 → (1)

2x + y = 9 → (2)

Subtract (1) from (2) term by term

(4x - 2x) + (y - y) = (17 - 9)

2x = 8 ( divide both sides by 2 )

x = 4

Substitute x = 4 into (1) and solve for y

4(4) + y = 17

16 + y = 17 ( subtract 16 from both sides )

y = 1

The radical symbol √ indicates the root extraction operation in mathematics. Non-examples of the radical symbol could include any symbol not associated with this concept, such as the minus sign (-), division sign (÷), or the Greek letter alpha (α).

The radical symbol √, used in mathematics, represents the operation of root extraction. A non-example of the radical symbol would be anything outside this context. Here are a few:

In summary, symbols unrelated to root extraction do not serve as examples of the radical symbol, since their usage and meaning in a given context significantly differ.

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Final answer:

In chemistry, a radical is a molecule with an odd number of valence electrons, such as the chlorine atom and the hydroxyl radical, which makes the molecule highly reactive and typically paramagnetic.

Explanation:

The term radical in chemistry usually refers to a molecule that has an odd number of valence electrons, rendering it highly reactive. These radicals do not follow the conventional complete octets in terms of electron configuration; they are typically short one or more electrons, which gives them an odd number of electrons in total. A familiar example of a radical is the gaseous chlorine atom, which has seven valence electrons and is denoted by its elemental symbol with a dot (Cl·). This makes the chlorine atom a radical because the unpaired electron can easily participate in chemical reactions.

Another example is the hydroxyl radical (OH·), which contains an unpaired electron. Radicals are generally considered to be paramagnetic due to their odd electrons, which can align with a magnetic field. The presence of these unpaired electrons makes radicals highly reactive and an important subject in chemical reactions.

Answer:

1/6

Step-by-step explanation:

We know this because we have to first add up all of the coins, bringing us to 18. Then, to make the fraction of the probability of selecting a penny at random, we'd simply do 3/18. This simplified would be 1/6

The probability of selecting a penny is 1/6.

Given that, a jar contains 3 pennies, 5 nickels, 4 dimes, and 6 quarters.

Probability can be defined as the ratio of the number of favourable outcomes to the total number of outcomes of an event.

We know that, probability of an event = Number of favourable outcomes/Total number of outcomes

Total number of outcomes =3+5+4+6

= 18

Number of favourable of outcomes = 3

So, probability of an event =3/18

= 1/6

Hence, the probability of selecting a penny is 1/6.

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Answer:

[tex]\large\boxed{\text{Factored Form:}\ f(x)+-(x-1)(x-5)}\\\boxed{\text{Vertex Form:}\ f(x)=-(x-3)^2+4}\\\boxed{\text{Standard Form:}\ f(x)=-x^2+6x-5}[/tex]

Step-by-step explanation:

(look at the picture)

Factored form:

[tex]f(x)=a(x-x_1)(x-x_2)[/tex]

x₁, x₂ - zeros

Vertex form:

[tex]f(x)=a(x-h)^2+k[/tex]

(h, k) - vertex

Standard form:

[tex]f(x)=ax^2+bx+c[/tex]

If from the vertex we go 1 unit down (up) and 1 unit left (right) and we get the point on the parabola, then a = 1.

The parabola is open down, therefore a < 0 → a = -1.

The zeros are [tex]x_1=1[/tex] and [tex]x_2=5[/tex]. Therefore the Factored Form is:

[tex]f(x)=-(x-1)(x-5)[/tex]

The vertex is V(3, 4). Therefore the vertex form is:

[tex]f(x)=-(x-3)^2+4[/tex]

Convert it to a standard form using (a - b)² = a² - 2ab + b²

[tex]f(x)=-(x^2-2(x)(3)+3^2)+4=-x^2+6x-9+4=-x^2+6x-5[/tex]

Final answer:

The mean usually has the greatest value among measures of central tendency like the median and mode, particularly in skewed distributions. The range is not a central tendency measure but represents the difference between the highest and lowest values.

Explanation:

When comparing different measures of central tendency, the mean usually has the greatest value in a skewed distribution. The mean is the arithmetic average of all the numbers, while the median is the middle value when the numbers are sorted, and the mode is the number that appears most frequently. Examples given show that in various cases, the mean tends to be larger than the median and mode, especially when the data set is right-skewed, which is when there are values that are significantly higher than the rest. Range, however, represents the difference between the highest and lowest values in the set, and is not a measure of central tendency, but rather a measure of spread.

Answer:

2.5 mins per page

Step-by-step explanation:

2.5 x [page's Read] = Awnser

The total time William needs to read his novel is calculated by multiplying the number of pages by 2.5 minutes per page. This method allows efficient time management and scheduling for reading. By dividing the total pages by available days, one can manage the reading workload more effectively.

The total time William takes to read his novel is directly proportional to the number of pages he reads. This means that if William allots 2.5 minutes to read each page of his novel, then for every page he reads, he will spend 2.5 minutes. To find the total time spent reading, you simply multiply the number of pages by 2.5 minutes.

For example, if William wants to read 40 pages, he would calculate his total reading time as 40 pages × 2.5 minutes per page = 100 minutes. This approach allows William to plan how much time he needs to set aside for reading based on the number of pages.

Additionally, dividing the total page count by the number of available days can help in managing the reading workload efficiently. By knowing how long it takes to read a set number of pages, William can also estimate the time required for larger sections and manage his schedule accordingly.

Final answer:

To compare two-way frequencies in a relative frequency table, calculate the relative frequency by dividing each frequency by the total number of data values, and find the cumulative relative frequency by summing up the previous relative frequencies.

Explanation:

To compare two-way frequencies in a relative frequency table, you start by calculating the relative frequency. This is done by dividing the frequency by the total number of data values for that group. For cumulative relative frequency, add the relative frequencies of all preceding rows to the relative frequency of the current row. Let's clarify using an example.

In the first row, if the relative frequency is .15, this is the cumulative frequency as well since it's the first value. For the second row, if the relative frequency is .25, we add this to the .15 from the first row to get a cumulative relative frequency of .40. Continue this process down each row.

When constructing a histogram using these frequencies, scale the x-axis in increments suitable to the data range (e.g., $50 widths) and plot relative frequencies on the y-axis. The sum of the relative frequency column should total 1 (or 100% if in percentage form), as it represents the entire sample.

The difference between relative frequency and frequency is that frequency is the absolute count of occurrences, while relative frequency expresses this count as a proportion of the total number of data values. Cumulative relative frequency is the sum of all previous relative frequencies, showing the accumulation of data up to that point.

Answer:

(x - 2i)(x + 2i)(x + 1)

Step-by-step explanation:

Factor x³ + x² + 4x + 4.

Note that x² is common to the first two terms, and that 4 is common to the last two terms.

Thus:  x³ + x² + 4x + 4 = x²(x + 1) + 4(x + 1).

We see that x + 1 is common to both terms.  Thus, we have:

(x² + 4)(x + 1).  

Note that x² + 4 has two imaginary roots:  2i and -2i.  Thus, the complete

factorization of the polynomial is (x - 2i)(x + 2i)(x + 1).

Answer:

[tex](x+1)(x+2i)(x-2i)[/tex]

Step-by-step explanation:

[tex]x^3+x^2+4x+4[/tex]

Factor the given polynomial

Group first two terms and last two terms

[tex](x^3+x^2)+(4x+4)[/tex]

Factor out GCF from each group

[tex]x^2(x+1)+4(x+1)[/tex]

Factor out x+1

[tex](x^2+4)(x+1)[/tex]

Now factor out x^2+4 that is x^2  + 2^2

[tex]x^2+4= (x+2i)(x-2i)[/tex]

[tex](x+1)(x+2i)(x-2i)[/tex]

Answer:

x < -4 or (-∞,-4)

Step-by-step explanation:

to solve 8x < -32, we treat the inequality symbol as an = sign and solve it like we would any other equation: get x alone

8x < -32 < divide both sides by 8 to isolate x

8x/8 = x

-32/8 = -4

x < -4 is our solution

in interval notation this can be written as (-∞, -4)

Answer:

Step-by-step explanation:

One of the easier approaches to graphing a linear equation such as this one is to solve it for y, which gives us both the slope of the line and the y-intercept.

x-3y=-6 → -3y = -x - 6,  or 3y = x + 6.

Dividing both sides by 3, we get   y = (1/3)x + 2.

So the slope of this line is 1/3 and the y-intercept is 2.

Plot a dot at (0, 2).  This is the y-intercept.  Now move your pencil point from that dot 3 spaces to the right and then 1 space up.  Draw a line thru these two dots.  End.

Alternatively, you could use the intercept method.  We have already found that the y-intercept is (0, 2).  To find the x-intercept, let y = 0.  Then x = -6, and the x-intercept is (-6, 0).

Plot both (0, 2) and (-6, 0) and draw a line thru these points.  Same graph.

Answer: Not sure if this is right but here we go.

Step-by-step explanation:

to solve for x

x-3y=-6

Add 3y on both sides, and that should give you x=-6+3y

Solve for y:

y=x/3+2

Answer:

Amplitude =1

Step-by-step explanation:

Given function is [tex]y=1\cdot\sin\left(2x\right)[/tex].

Now we need to find about what is the amplitude of the given function [tex]y=1\cdot\sin\left(2x\right)[/tex].

To find that let's compare given equation [tex]y=1\cdot\sin\left(2x\right)[/tex] with standard equation [tex]y=a\cdot\sin\left(bx-c\right)+d[/tex]. We get:

a=1

We know that amplitude of the function [tex]y=a\cdot\sin\left(bx-c\right)+d[/tex] is given by the value of |a|.

Hence amplitude of the given function = |a|= |1|=1

Answer:

[tex]f(x)=3x^3+x^2+3x+1[/tex]

Step-by-step explanation:

If a real number [tex]-\frac{1}{3}[/tex] is a zero of polynomial function, then

[tex]x-\left(-\dfrac{1}{3}\right)=x+\dfrac{1}{3}[/tex]

is the factor of this function.

If a complex number [tex]-i[/tex] is a xero of the polynomial function, then the complex number [tex]i[/tex] is also a zero of this function and

[tex]x-(-i)=x+i\ \text{ and }\ x-i[/tex]

are two factors of this function.

So, the function of least degree is

[tex]f(x)=\left(x+\dfrac{1}{3}\right)(x+i)(x-i)=\left(x+\dfrac{1}{3}\right)(x^2-i^2)=\\ \\ =\left(x+\dfrac{1}{3}\right)(x^2+1)=\dfrac{1}{3}(3x+1)(x^2+1)=\dfrac{1}{3}(3x^3+x^2+3x+1)[/tex]

If the polynomial function must be with integer coefficients, then it has a form

[tex]f(x)=3x^3+x^2+3x+1[/tex]

Answer:

Center (-13,11) , radius 3

Step-by-step explanation:

The given circle has equation

[tex]x^2+y^2+26x-22y+281=0[/tex]

We compare this to the general equation.

[tex]x^2+y^2+2ax+2by+c=0[/tex]

where (-a,-b) is the center.

This implies that;

2a=26

[tex]\Rightarrow a=13[/tex]

2b=-22

b=-11

The center is therefore (-13,11)

The radius is given by

[tex]r=\sqrt{a^2+b^2-c}[/tex]

[tex]r=\sqrt{13^2+(-11)^2-281}[/tex]

[tex]r=\sqrt{9}[/tex]

The radius is 3

M has one line of symmetry!

Hope it helped!

Answer:the answer is B

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Given

5x² + 40x - 100

To find the zeros equate to zero, that is

5x² + 40x - 100 = 0 ( divide all terms by 5 )

x² + 8x - 20 = 0

To factor the quadratic

Consider the factors of the constant term (- 20) which sum to give the coefficient of the x- term (+ 8)

The factors are + 10 and - 2, since

10 × - 2 = - 20 and 10 - 2 = + 8, thus

(x + 10)(x - 2) = 0

Equate each factor to zero and solve for x

x + 10 = 0 ⇒ x = - 10

x - 2 = 0 ⇒ x = 2

Zeros are x = - 10 and x = 2 → B

Answer:

46

Step-by-step explanation:

I went to google.

Search up 20% of 230,

got 46 lol

If there is an aquarium containing 230 fish, 20% are angelfish, then there are 46 angelfish in the aquarium.

To find the number of angelfish in the aquarium, we first need to calculate 20% of 230, as the given percentage represents the proportion of angelfish in the total fish population.

Calculate 20% of 230

To find 20% of a number, we multiply the number by 0.20 (which is the decimal equivalent of 20%).

20% of 230 = 0.20 * 230

= 46

Determine the number of angelfish

Now that we know that there are 46 angelfish in the aquarium, we have successfully answered the question.

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Answer:

-12

Step-by-step explanation:

y = 4x^2 + 8x - 8

Put brackets around the first 2 terms and pull out the common factor

y = (4x^2 + 8x) - 8

y = 4(x^2 + 2x) - 8

Take 1/2 of the linear term (2x) and square it. Put the square inside the brackets.

y = 4(x^2 + 2x + (2/2)^2 ) - 8

y = 4(x^2 + 2x + 1) - 8

You have added 4*1 inside the brackets. You must subtract that amount outside the brackets.

y = 4(x^2 +2x + 1) - 8 - 4

Notice that the trinomial inside the brackets is a perfect square. Combine the terms outside the brackets.

y = 4(x + 1)^2 - 12    

You have completed the square and you are finished.

The vertex is (-1, - 12)

The y value is - 12.

Just to confirm this, I have included the graph.

Answer:

x = 8

Step-by-step explanation:

The two angles are complementary angles, which means they add to 90 degrees

6x + (4x+10) = 90

Combine like terms

10x+10 = 90

Subtract 10 from each side

10x+10-10=90-10

10x = 80

Divide each side by 10

10x/10=80/10

x = 8

Answer:

Step-by-step explanation:

4.6 pounds of pecans     1 pound of pecans

_________________ = ______________

50. 89 dollars                   x dollars

Set up an equation like this.

Cross multiply

4.6(x)=50.89(1)

divide both sides by 4.6

x=11.06 (about)

So I pound of pecans costs about 11.06 dollars

Answer:

11.06 is the one correct :)

]

Answer:

B) Interquartile Range

Answer:

IQR, interquartile range

Step-by-step explanation:

thats what i got on algebra nation, lmk if you want an explanation :)

Answer:

Lin has not proven that the probability is not 1/2 because there are only two possible outcomes when flipping a coin and each side has a 50% chance of facing up. Liz flipping the coin 10 times and not getting equal results for both sides is just a random occurrence and it does not effect the 50% chance.

awnser: 42

step by step:

1. find the racio of both

2.multiply the awnsers by 7

3.finally subtract

The answer is 42 because to find how meant men and women started at on the the first day you do

177/3=59 and 159/3=53

Then you times those numbers separately by 7. So 59*7=413 and 53*7=371

Then you do 413 men-371 women=42 more men then women.

Answer:

B. 28

Step-by-step explanation:

We are given the following system of equations

[tex]y=5x+10\\y=10x-5[/tex]

We can substitute in one of the equations for y. This will give us an equation that we can solve for x.

[tex]5x+10=10x-5\\\\5x=15\\\\x=3[/tex]

Next we can substitute in our value for x in order to find the y value.

[tex]y=5(3)+20\\\\y=15+20\\\\y=25[/tex]

Now we can check with the other equation to see if our x and y values are correct

[tex]25=10(3)-5\\\\25=30-5\\\\25=25[/tex]

Now we are certain that x=3 and y=25

[tex]x+y=?\\\\3+25=28[/tex]