When Xochitl runs the 400 meter dash, her finishing times are normally
distributed with a mean of 84 seconds and a standard deviation of 2.5
seconds. Using the empirical rule, determine the interval of times that
represents the middle 68% of her finishing times in the 400 meter race.

Counting to 20 in Spanish is a relatively straightforward process. The first step is to learn the numbers from 1 to 10, which are:

1 - uno

2 - dos

3 - tres

4 - cuatro

5 - cinco

6 - seis

7 - siete

8 - ocho

9 - nueve

10 - diez

Once you have these numbers memorized, it's easy to continue counting up to 20. Simply add the numbers from 11 to 19 to the base number, diez.

11 - once (diez + uno)

12 - doce (diez + dos)

13 - trece (diez + tres)

14 - catorce (diez + cuatro)

15 - quince (diez + cinco)

16 - dieciséis (diez + seis)

17 - diecisiete (diez + siete)

18 - dieciocho (diez + ocho)  

19 - diecinueve (diez + nueve)

20 - veinte

As you can see, the only exception is the number 15, which has its own unique word, "quince." Other than that, all of the numbers from 11 to 19 follow the same pattern of adding "diez" to the appropriate digit. And once you reach 20, you're done! It's important to note that Spanish has gendered nouns, so when counting objects, you will need to use the appropriate article and adjective to match the gender of the noun. For example, if you are counting "dogs," you would say "uno perro," but if you were counting "cats," you would say "una gata."

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Answer:

1  uno

2  dos

3  tres

4  cuatro

5 cinco

6 seis

7 siete

8 ocho

9 nueve

10 diez

11 once

12 doce

13 trece

14 catorce

15 quince

16 dieciséis

17 diecisiete

18 dieciocho

19 diecinueve

20 veinte

Step-by-step explanation:

The table is

Balloon        Helium in the tank

1                                14.4

2                                13.9

3                                13.4

4                                12.9

What is a function?

A function in mathematics from a set X to a set Y assigns exactly one element of Y to each element of X. The sets X and Y are collectively referred to as the function's domain and codomain, respectively. Initially, functions represented the idealized relationship between two varying quantities.

Given function is h = 14.9 - 0.5b  .....(i)

Where b is the number of ballon.

Putting b = 1 in equation (i)

h(1) = 14.9 - 0.5×1

h(1) = 14.4

Putting b =2 in equation (i)

h(2) = 14.9 - 0.5×2

h(2) = 13.9

Putting b = 3 in equation (i)

h(3) = 14.9 - 0.5×3

h(3) = 13.4

Putting b = 4 in equation (i)

h(4) = 14.9 - 0.5×4

h(4) = 12.9

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Answer: 1 liters = 1000 cm^36 liters = 6000 cm^3Height

Step-by-step explanation:

1 liters = 1000 cm^36 liters = 6000 cm^3Height

Answer:

-52

Step-by-step explanation:

If x = -2 and y = 6, then we can substitute those values into the expression:

5(2 x - 4) - 2y = 5(2(-2) - 4) - 2(6)

= 5(-4 - 4) - 2(6)

= 5(-8) - 2(6)

= -40 - 12

= -52

So, the value of the expression 5(2 x - 4) - 2y when x = -2 and y = 6 is -52.

The solution to the inequality is a coordinate of (-1.8, 0.6)

From the question, we have the following parameters that can be used in our computation:

y> -2x - 3

Y <4/3x +3

Next, we make a plot of the system to determine the solution

The shaded area in the plot represent the solution to the inequality

In this case, the shaded area has a coordinate of (-1.8, 0.6)

Hence, the solution is (-1.8, 0.6)

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1000 meters is equal to 3280.84 feet. To convert from meters to feet, you must multiply the number of meters by 3.28084. This is due to the fact that a meter is slightly longer than a foot.

One meter is equivalent to 3.28084 feet. Therefore, to compute 1,000 meters in feet, you must multiply 1,000 meters by 3.28084. Doing this calculation yields a result of 3,280.84 feet. The meter is the primary unit of measurement for length in the International System of Units, or SI. The SI base unit for length is the meter, which is defined as the length of the path travelled by light in a vacuum in 1/299,792,458 seconds. In other words, the meter is the distance light travels in a vacuum in 1/299,792,458 of a second. The meter is also referred to as the "meter of the air," since it is the length of the path travelled by light in the air in the same time.The foot is a unit of length in the British Imperial and US customary systems of measurement, and is equivalent to 1/3 of a yard. One foot is equal to 0.3048 meters.

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Answer:

-1280

Step-by-step explanation:

10×(-2)= -20

-20×(-2)= 40

4th term: 40×(-2)= -80

5th term: -80×(-2)= 160

6th term: 160×(-2)= -320

7th term: -320×(-2)= 640

8th term: 640×(-2)= -1280

The dimensions of the field are length is 12 m and width is 17m  or length is 17m and width is 17m.

The area of Rectangle is length times of width.

Given that Julieta has 58 m of fencing to build a four-sided fence around a rectangular plot of land.

2(L+W)=58

2L+2W=58

Now  area of the land is 204 square meters.

LW=204

L=204/W

Now plug in this L in above equation.

2(204/W)+2W=58

408/W+2W=58

2W²+408-58W=0

2(W²-29W+204)=0

(W-17)(W-12)=0

W=17

Now plug in W as 17 in L

L=204/17=12

Hence, the dimensions of the field are length is 12 m and width is 17m  or length is 17m and width is 17m.

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The required, Mmusi borrowed R3000 from Aggie as per the given conditions.

Simple interest is a quick and simple formula for figuring out how much interest will be charged on loan.

Amount = Principal [1 + rate×time]

Let's call the amount Mmusi borrowed from Aggie "P".

After two years, he has to pay back
= P + P * 18% * 2
= P + 0.18 * P * 2
= P + 0.36P
= 1.36P

So if he has to pay back R4080, we can set up an equation to solve for P:

1.36P = 4080

To find P, we can divide both sides by 1.36:

P = 4080 / 1.36 = 3000

So Mmusi borrowed R3000 from Aggie.

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Answer:

Yes it is a right triangle

Step-by-step explanation:

These side lengths correspond to a Pythagorean triple, specifically 8-15-17, which is a set of three positive integers that satisfies the Pythagorean theorem. The theorem states that in a right triangle, the sum of the squares of the lengths of the two shorter sides is equal to the square of the length of the longest side, also known as the hypotenuse.

In this triangle, 32^2 + 60^2 = 8^2 + 15^2 = 17^2, which confirms that it is indeed a right triangle.

Answer: Seed needed for the new lawn = 125 pounds

Step-by-step explanation:

Knowing the amount of seed needed for their old lawn will help Mr. and Mrs. Quigley calculate the amount of seed needed for their new lawn based on the size of the area.

First, let's calculate the area of the old lawn:

Area = length × width

Area = 10 ft × 20 ft

Area = 200 square feet

Next, we can determine the seed requirement per square foot for the old lawn:

Seed requirement per square foot = total seed needed ÷ area of the lawn

Seed requirement per square foot = 5 pounds ÷ 200 square feet

Seed requirement per square foot = 0.025 pounds per square foot

Now, let's calculate the area of the new lawn:

Area = length × width

Area = 100 ft × 50 ft

Area = 5000 square feet

To find the amount of seed needed for the new lawn, we can multiply the seed requirement per square foot by the area of the new lawn:

Seed needed for the new lawn = Seed requirement per square foot × area of the new lawn

Seed needed for the new lawn = 0.025 pounds per square foot × 5000 square feet

Therefore, Mr. and Mrs. Quigley will need 125 pounds of grass seed for their new lawn based on the calculations using the information from their old lawn.  

The domain of the relation include the following: A. {1, 2, 3, 6}.

In Mathematics, the horizontal extent of any graph of a function represents all domain values and they are always read and written from smaller to larger numerical values, and from the left of the graph to the right.

By critically observing the graph shown in the image attached below, we can reasonably and logically deduce the following domain:

Domain = {1, 2, 3, 6}.

In conclusion, the domain of this relation are all the x-values (independent value) that are located on the x-axis of the graph, which include {1, 2, 3, 6}.

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The three solutions to the equation are (0, 1), (1, 12) and (2, 25)

From the question, we have the following parameters that can be used in our computation:

y = 12x + 1

Next, we set x to 0, 1 and 2

Substitute the known values in the above equation, so, we have the following representation

y = 12 * 0 + 1

y = 1

y = 12 * 1 + 1

y = 13

y = 12 * 2 + 1

y = 25

As an ordered pair, we have

(0, 1), (1, 12) and (2, 25)

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Answer:

3 min 20 seconds

Step-by-step explanation:

30÷0.15= 200 seconds

= 3 min 20 seconds

The diameter across this loop was 236.6 feet

Perimeter is a mathematical term, which means total outer boundary of a figure, we define it only for two dimensional figures.

Perimeter = Sum of length of the all the sides

However, if we assume that Evan ran around the loop's outer edge and not inside the loop,

we can use the formula for the circumference of a circle,

which is C = πd,

where C is the circumference, d is the diameter, and π is approximately 3.14.

We can rearrange the formula to solve for the diameter,

which is d = C/π.

Plugging in the given value for the circumference, we get:

d = 744/π ≈ 236.6 feet

Therefore, if Evan ran around the outer edge of the loop, the diameter of the circle is approximately 236.6 feet.

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Answer:

x = 60 degrees (if x < 90 degrees).

Step-by-step explanation:

secx - 2 = 0

secx = 2

Now sec x = 1/cos x

So,

1/cosx = 2

cos x = 1/2

x = 60 degrees.

The total number of 2 pointers was 4.

The total number of 3 pointers was 11

Let the number of 2 pointers be x

Let the number of 3 pointers be y

Since the total points was 41, then we have;

2x + 3y = 41    -------(1)

Total basket was 15. Thus;

x + y = 15     --------(2)

Multiply eq 2 by 2 and eq 1 by 1 to get;

2x + 3y = 41    -------(3)

2x + 2y = 30     --------(4)

Subtract eq 4 from eq 3 to get;

y = 11

Thus;

x = 15 - 11

x = 4

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In the Metric System , each millimeter increment is equal to the 1/10 or 0.1 of a centimeter .

The Metric System is defined as a standardized system of measurements which is used in many countries around the world.

In the Metric System, there are different units of length, which include  millimeters (mm) and centimeters (cm).

we know that , 1 centimeter is equivalent to 10 millimeters. This means that each millimeter increment is equal to 0.1 of a centimeter.

For Example, if we measure a length of 50 millimeters, we can convert it to centimeters by dividing 50 by 10, which gives you a length of 5 centimeters.

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The given question is incomplete , the complete question is

In the metric system each millimeter increment is equal to ____ of a centimeter .

Answer:

Part A:

The equation for the amount of money Nora would spend after the discount is applied on a shirt that costs d dollars is:

c = d - 0.05d

c = 0.95d

Part B:

Let x be the total value of the clothes Nora can buy before the discount is taken.

After the discount is applied, she can spend a total of $57, so we have:

0.95x = 57

x = 60

Therefore, Nora can buy a total of $60 worth of clothes before the discount is taken.

Answer:

I cannot give you the answer because I need the table with the records.

Step-by-step explanation:

Answer:

£ 185

Step-by-step explanation:

Tama po yan promise

The equation we need to use to find the number of bills in Guy Granger's stack is 5b = 4, where b is the number of bills.

What is an Equation ?

An equation is a mathematical term, which indicates that the value of two algebraic expressions are equal. There are various parts of an equation which are, coefficients, variables, constants, terms, operators, expressions, and equal to sign.

For example, 3x+2y=0.

Types of equation

1. Linear Equation

2. Quadratic Equation

3. Cubic Equation

This equation represents the fact that each of the 5 contestants received 4 one hundred-dollar bills, so the total number of bills is

= 4 x 5

= 20

To solve for b, we need to divide both sides of the equation by 5:

5b / 5 = 4 / 5

b = 4 / 5

So, the number of bills in Guy Granger's stack is 4 / 5 * 100 = 80.

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Answer:

lower right option

Step-by-step explanation:

using the properties of logarithms

• loga + logb ⇔ log(ab)

• loga - logb ⇔ log ([tex]\frac{a}{b}[/tex] )

• log[tex]x^{n}[/tex] = nlogx

• lne = 1

given

a[tex]e^{bt}[/tex] = c ( take ln of both sides )

ln a[tex]e^{bt}[/tex] = lnc

lna + ln[tex]e^{bt}[/tex] = lnc

lna + bt lne = lnc ( subtract lna from both sides )

bt = lnc - lna

bt = ln ([tex]\frac{c}{a}[/tex] ) ← divide both sides by b

t = [tex]\frac{ln(\frac{c}{a}) }{b}[/tex]

Answer: never

Step-by-step explanation:

Store A's prices are represented by the expression 25x-9

Store B's prices are represented by the expression 5(5x+8)

To find when the 2 stores charge the same rate , we set the expression equal and solve for x

25x-9 = 5(5x+8)

25x -9 = 25x + 40

Subtract 25x on both sides

-9 = 40

We cannot solve for x

So , the price of two stores never be same

Two stores never charge the same rate

The measure of m∠S is 116.3.

Parallelogram is a quadrilateral that has two pairs of parallel sides.

In a parallelogram, opposite sides and angles are equal.

The adjacent angles add up to 180 degrees.

We have,

Parallelogram QRST.

m∠R = 63.7

Now,

We see that,

m∠R and m∠T are opposite angles.

So,

m∠T = 63.7 _____(1)

And,

m∠Q and m∠S are opposite angles.

So,

m∠Q = m∠S ______(2)

Now,

The sum of the four angles is 360.

So,

m∠R + m∠T + m∠Q + m∠S = 360

From (1) and (2),

63.7 + 63.7 + 2m∠S = 360

127.4 + 2m∠S = 360

2m∠S = 360 - 127.4

2m∠S = 232.6

m∠S = 232.6/2

m∠S = 116.3

Thus,

The measure of m∠S is 116.3.

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The businesswoman must invest $7,500 in the 13% fund and $22,500 in the 15% fund to earn a return of $4,350 after one year.

An equation contains one or more terms with variables connected by an equal sign.

We can use substitution or elimination method to solve when there are more than one equation.

Example:

2x + 4y = 9 is an equation.

2x = 8 is an equation.

We have,

Let's denote,

The amount invested in the 13% fund =  x

The amount invested in the 15% fund = y.

Now,

The total amount invested = $30,000,

i.e

x + y = 30000 _____(1)

The total return after one year = $4,350.

Which can be expressed as,

0.13x + 0.15y = 4350 _____(2)

Use the substitution method.

From (1),

x + y = 30000

y = 30000 - x _____(3)

Substituting y in (2)

0.13x + 0.15(30000 - x) = 4350

Solving for x.

0.13x + 4500 - 0.15x = 4350

-0.02x = -150

x = 7500

And,

y = 30000 - x

y = 30000 - 7500

y = 22500

Thus,

The businesswoman must invest $7,500 in the 13% fund and $22,500 in the 15% fund to earn a return of $4,350 after one year.

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The complete question.

A businesswoman wants to invest $30,000 in different funds that produce annual returns of 13% and 15% respectively. How much must she invest in each fund to earn a return of $4,350 after one year?

The given sample space could represent a win and loss game by flipping a coin twice, where win represent the outcome head and loss represent the outcome tail.

A sample space is a set of all the possible outcomes in a random experiment. It is usually denoted by the letter, S.

The subset of the sample space are events.

Given sample space is S = {WW, WL, LW, LL}

This can be interpreted as the outcomes in a random experiment, which has only two possibilities, either win or loss.

Suppose that we flip a coin two times.

Possible outcomes are,

HH : head appears twice

HT : head appears at first and tail appears second

TH : tail appears first and then head appears

TT : tail appears twice

Let the outcome head represent the win and tail represent the loss.

Possible outcomes are then WW, WL, LW, LL.

Hence the given sample space can be a possible outcomes of flipping a coin twice.

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