Please answer this quickly, I don’t need no explanation or work, just the letter, thank you!

Answers

Answer 1

Solution:

Given the graph;

If a vertical line intersects a curve on an xy-plane more than once then for one value of x the curve has more than one value of y, and so, the curve does not represent a function.

ANSWER: B

Related Questions

In a recent awards ceremony, the age of the winner for best actor was 38 and the age of the winner for best actress was 51. For all best actors, the mean age is 46.8 years and the standard deviation is 5.7 years. For all best actresses, the mean age is 31.9 years and the standard deviation is 10.8 years. (All ages are determined at the time of the awards ceremony.) Relative to their genders, who had the more extreme age when winning the award, the actor or the actress? Explain.

Answers

Given

the age of the winner for best actor was 38 and the age of the winner for best actress was 51.

For all best actors, the mean age is 46.8 years and the standard deviation is 5.7 years.

For all best actresses, the mean age is 31.9 years and the standard deviation is 10.8 years.

Find

who had the more extreme age when winning the award, the actor or the actress

Explanation

the Z- score is given by

[tex]Z=\frac{X-\mu}{\sigma}[/tex]

Best Actor

X = 38

mean = 46.8 years

standard deviation = 5.7 years.

so ,

[tex]\begin{gathered} Z=\frac{38-46.8}{5.7} \\ \\ Z=-1.54385964912\approx-1.54 \end{gathered}[/tex]

Best Actress

X = 51

mean = 31.9 years

standard deviation = 10.8 years.

so ,

[tex]\begin{gathered} Z=\frac{51-31.9}{10.8} \\ \\ Z=1.76851851852\approx1.77 \end{gathered}[/tex]

the best actress's age is farther from the mean so he has the more extreme age when the winning the award.

Final Answer

Hence , the z- score for best actor is -1.54 and for best actress = 1.77

Actress has more extreme age

What property is used in theses math problems

1: If AB=CD, then CD=AB
2: 5(x-4) = 5x-20
3: 3x-17=8, then 3x=25
4: 22m=440, then m=20
5:(2a+3a)-4a=7a+55, then (5a)-4a=7a+55
6:If GH=2x+17, and 2x+17=JK, then GH=JK
7:2b+(b-7)=17, then (2b+b)-7=17
8:(x+7)/3=13, then x+7=39.
9:m 10:4+x=13, then x+4=13

Answers

The various algebraic properties used for each of the given expressions are;

1) Symmetric property of equality.

2) Distributive property of equality.

3) Addition property of equality.

4) Division property of equality.

5) Addition property of equality.

6) Transitive property of equality.

7) Associative property of equality.

8) Multiplication property of equality

9) Commutative property of equality.

What is the Property of Algebra that is used?

There are different properties of equality or algebra such as;

Commutative PropertyAssociative PropertyDistributive PropertyInverse propertyTransitive PropertyReflexive PropertySymmetric propertySubstitution propertyAddition propertySubtraction property

1) If AB=CD, then CD=AB; Property used here is Symmetric property of equality because it suits the definition.

2) 5(x-4) = 5x-20; Property used here is Distributive property of equality because it suits the definition.

3) 3x - 17 = 8, then 3x = 25; Property used here is Addition property of equality because it suits the definition.

4) 22m=440, then m=20; Property used here is Division property of equality because it suits the definition.

5) :(2a+3a)-4a=7a+55, then (5a)-4a=7a+55; Property used here is Addition property of equality because it suits the definition.

6) If GH=2x+17, and 2x+17=JK, then GH=JK; Property used here is Transitive property of equality because it suits the definition.

7) 2b+(b-7)=17, then (2b+b)-7=17; Property used here is Associative property of equality because it suits the definition.

8) (x+7)/3=13, then x+7=39.; Property used here is Multiplication property of equality because it suits the definition.

9) m 10:4+x=13, then x+4=13; Property used here is Commutative property of equality because it suits the definition.

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3. Which of the following quadratic functions has a maximum point?

Answers

The general form of a quadratic equation is given by the expression:

[tex]ax^2+bx+c=0[/tex]

A quadratic equation having a maximum value or point is one that has its value of a to be lesser than zero

(a < 0). Such a graph opens downwards

Therefore, any quadratic equation that has the a-value to be lesser than zero has a maximum point

Mathematically expressed as:

[tex]\begin{gathered} y=-x^2 \\ \Rightarrow a=-1 \end{gathered}[/tex]

3. Select all expressions that are equivalent to (2n + 6)(n + 3)a. 2(n? + 6n +9)b. 2n? + 6n + 18c. 2n2 + 12n + 18d. 12n + 18e. 2(n + 3)(n + 3)f. 2(n + 3)?

Answers

Select all expressions that are equivalent to (2n + 6)(n + 3)

we have

(2n + 6)(n + 3)

apply distributive property

2n^2+6n+6n+18

2n^2+12n+18

Verify each option

option A

2(n^2 + 6n +9)=2n^2+12n+18 -------> is ok

option B

is not correct

option C

is correct

option D

is not correct

option E

2(n + 3)(n + 3)= (2n + 6)(n + 3) ------> is correct

option F

2(n + 3)^2=2(n^2+6n+9)=2n^2+12n+18 -----> is ok

therefore

answers areA, C, E, F

I need help with this practice problem from my ACT prep guideIt is trigonometry It asks to graph the function yourself, on paper, or on desmos

Answers

If we start with the parent function f(x) = cot(x), the transformation needed to go from this function to cot(x + π/6) is expressed as:

[tex]f(x)\to f(x+\frac{\pi}{6})[/tex]

That is, we need to make a shift of π/6 units to the left, beginning with the cot(x) graph. The graph of cot(x + π/6) is:

The current in a resistor is inversely proportional to the resistance. By what factor will the current change if the resistance increases 10%.

Answers

The factor by which the current changes if the resistance increases 10% is; 90.9% reduction

How to Interpret Ohms' Law?

Ohm's law states that the electrical current (I) flowing in a circuit is directly proportional to the voltage (V) and inversely proportional to the resistance(R). Therefore, if the voltage is increased, the current will increase provided the resistance of the circuit does not change. Thus;

I = V/R

Now, we are told that the resistance increases by 10%.

Thus, New value of resistance = 1.1R

Thus, new current/old current = 1/1.1 = 0.909 = 90.9%

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question is in image

Answers

The expresion for the correlation coefficient is :

[tex]r=\frac{n\Sigma xy-\Sigma x\Sigma y}{\sqrt[]{\mleft\lbrace n\Sigma x^2-(\Sigma x)^2\}\mleft\lbrace n\Sigma y^2-(\Sigma y)\mright?^2\mright\rbrace}}[/tex]

summation of x = 5 + 7 + 10 + 15 + 19

Summation of x = 56

Summation of y = 19 + 17 + 16 + 12 + 7

Summation of y = 71

Summation of prodcut xy

[tex]\begin{gathered} \Sigma xy=5\times19+7\times17+10\times16+15\times12+19\times7 \\ \Sigma xy=687 \end{gathered}[/tex]

Summation of x^2 = 25 + 49 + 100 + 225 + 361

Summation of x^2 = 760

Summation of y^2 = 361 + 289 + 256 + 144 + 49

Summation of y^2 = 1099

Substitute tha value in the expression of correlation coefficient

[tex]\begin{gathered} r=\frac{n\Sigma xy-\Sigma x\Sigma y}{\sqrt[]{\mleft\lbrace n\Sigma x^2-(\Sigma x)^2\}\mleft\lbrace n\Sigma y^2-(\Sigma y)\mright?^2\mright\rbrace}} \\ r=\frac{5(687)-56\times71}{\sqrt[]{\mleft\lbrace5(760)-(56)^2\}\mleft\lbrace5(1099\mright)-(71\mright)^2}} \\ r=\frac{541}{\sqrt[]{\begin{cases}3800-3136\}\mleft\lbrace5495-5042\mright\rbrace\end{cases}}} \\ r=\frac{541}{\sqrt[]{300792}} \\ r=\frac{541}{548.44} \\ r=0.985 \end{gathered}[/tex]

Answer: A) Correlation coefficient is 0.985

The width of a room is 7 feet, and the area of the room is 77 square feet. Find the room's length.
...

Answers

Answer:

Step-by-step explanation:

A = lw

l = A/w

l = 77/7

l = 11

Hope that helps

Malcolm's Bakery Shop sells gourment cupcakes. The shop's cost for making 3 cupcakes is $6.75, and the cost of making 5 cupcakes is $9.75 . What is the shop's cost per minute?

A. $1.50

B. $1.95

C. $2.25

D. $3.00

Answers

The average cost per minute which the shop runs is $1.50

Shop's Cost per Minute

To find the shop's cost per minute, we can write down equations and proceed to solve.

In the given question, 3 cupcakes cost $6.75 and 5 cupcakes cost $9.75.

But we were not given the average cost per cupcake.

To do that, let's write an equation for this.

[tex]y = mx + c[/tex]

Let's find the slope to this equation which determines the average cost per minute.

[tex]m = \frac{y_2-y_1}{x_2-x_1} \\m = \frac{9.75 - 6.75}{5 - 3} \\m = 1.50[/tex]

The shop's cost per minute was calculated to be $1.50.

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Montraie is going to invest in an account paying an interest rate of 4.6% compounded annually. How much would Montraie need to invest, to the nearest ten dollars, for the value of the account to reach $1,610 in 15 years?

Answers

If Montraie is going to invest in an account paying an interest rate of 4.6% compounded annually, then she has to invest $820.06 for the value of the account to reach $1610 in 15 years

The interest rate = 4.6%

The final amount = $1610

The time period = 15 years

The compound interest

A = [tex]P(1+\frac{r}{100})^{t}[/tex]

Where A is the final amount

P is the principal amount

r = interest rate

t is the time period

Substitute the values in the equation

1610 = [tex]P(1+\frac{4.6}{100})^{15}[/tex]

1610 = P×1.96

P = 1610/1.96

P = $820.06

Hence, if Montraie is going to invest in an account paying an interest rate of 4.6% compounded annually, then she has to invest $820.06 for the value of the account to reach $1610 in 15 years

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Jenna bought a coat on sale for $120 which was 2/3 of the original price what was the original price of the coat

Answers

Jenna bought a coat on sale for $120

The price of the coat is the 2/3of the original price

Let the original price is $x

So, the equation will be :

2/3 of x =120

[tex]\begin{gathered} \frac{2}{3}\text{ of x=120} \\ \frac{2}{3}\times x=120 \\ x=120\times\frac{3}{2} \\ x=60\times3 \\ x=180\text{ dollars} \end{gathered}[/tex]

So, The original price of the coat is $180

There are 100 centimeters (cm) in 1 meter (m) Choose the correct answers from the drop-downs lists to complete the sentence. To convert 4 m to centimeters Choose 4 by C

Answers

given: 100 cm = 1 meters

We need to convert 4 m to cm

so,

[tex]4m=4\cdot100\operatorname{cm}=400\operatorname{cm}[/tex]

Which values are solutions to the inequality below? √x≤=12 check all that apply: A. 143 B. 125 C. 20736 D. 144 E. 12 F. 145

Answers

Given data:

[tex]\sqrt[]{x}\leq12[/tex]

First squaring both sides we get,

[tex]x\leq144[/tex]

Therefore, the value for the solution which satisfies the above equation are

[tex]\begin{gathered} a)\text{ 143}<144 \\ b)\text{ 125}<144 \\ d)\text{ 144}\leq144 \\ e)\text{ 12}<144 \end{gathered}[/tex]

Thus, the ans is (a) , (b) , (d) , (e)

I only need the answer
THANK YOU!!

Answers

Formula for the trigonometry is y = b sin ( πx/2 - π/2) + 4

y = A sin( ωx + δ) + b

period: t = 4

ω = 2π/t = 2π/4 = π/2

A = 10 -(-2)/ 2

= 6

b = (10-2)/2

= 4

y = b sin (πx/2 + δ) + 4

x = 0, y = bsinδ + 4 = -2

sinδ = -1 => δ = -π/2

y = b sin( πx/2 - π/2) + 4

Therefore the formula for the trigonometry function is y = b sin(πx/2 - π/2) + 4.

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find the equatuon of the line y=_x+_

Answers

Answer: y = -2x + 5

Step-by-step explanation:

y = _x + 5

(5,0) (3,4)

(y2 - y1) / (x2 - x1)

(4 - 0 ) / (3 -5)

4 / -2

-2

y = -2x + 5

For each relation, decide whether or not it is a function.

Answers

Top left: Yes, each input corresponds to only one output.

Top right: Yes, each input corresponds to only one output.

Bottom left: Yes, each input corresponds to only one output.

Bottom right: No, the input of -1 corresponds to three different outputs.

The side lengths in yards of a triangle and a square are shown in the diagram. (4x - 2) yd 2x yd 2(x + 7) yd 2.5x yd The perimeter of the triangle is equal to the perimeter of the square. What is the value of x?

Answers

(4x -2) yd, 2x yd, 2(x + 7) yd, 2.5x yd. The triangle's perimeter is the same as the square's perimeter. The value of x=6

Given that,

The graphic displays the yards-long sides of a triangle and a square. The triangle's perimeter is the same as the square's perimeter.

We have to find the value of x in the given side.

In the picture we can see the triangle and square.

The perimeter of the triangle is sum of the three sides of the triangle.

The perimeter of the square is 4 times the side of the square.

4x-2+2x+2(x+7)=4×2.5x

4x-2+2x+2x+14=10x

8x+12=10x

10x-8x=12

2x=12

x=12/2

x=6

Therefore, the value of x=6

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Convert. 260 milliliters to centiliters.

Answers

Answer:

26 centilitres.

Explanation:

First, we start by recalling the standard conversion between millilitres and centilitres.

[tex]10\text{ milliliter = 1 centileter}[/tex]

Let 260 milliliters = x centiliters

We express it as a ratio:

[tex]\frac{10\text{ }milliliters}{1\text{ centiliter}}=\frac{260milliliters}{x\text{ centiliters}}[/tex]

Cross multiply to solve for x:

[tex]\begin{gathered} 10x=260\times1 \\ x=\frac{260}{10} \\ x=26\text{ centiliters} \end{gathered}[/tex]

Therefore, 260 millilitres is 26 centiliters.

the sum of the interior angles of an octagon is 1080 degrees. each angle is six degrees larger than the angle just smaller than it. what is the measure of the fourth angle?

Answers

The measure of the fourth angle that is x and the value is 133°

What is an octagon?

A regular octagon will have all its sides equal in length. Each interior angle of a regular octagon is equal to 135°. Therefore, the measure of exterior angle becomes 180° – 135° = 45°. The sum of the interior angles of the octagon is 135 × 8 = 1080°.

Let the 8 interior angles of the octagon be:

x-12, x-8, x-4, x, x+4, x+8, x+12, x+16.

Their sum = 8x+16 = 1080, or

this implies 8x = 1080–16 = 1064

thus on further solving we get x = 133

Hence the sixth angle = x+8 =141 degrees.

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4.5(8-x) -36 = 102 - 25 (3x + 24)

Answers

Let's simplify the following equation

You wish to program an LED strip containing n LEDs . Each individual LED can be lit in red, green, blue, or white. How many length-n

colour sequences have at least one pair of adjacent LEDs that light up with the same colour?

Hint: Find a recurrence relation. Order matters, (GGR and RGG are different). Also need to consider for the intersection of probabilities.

Answers

Using the Fundamental Counting Theorem, the number of length-n sequences that have at least one pair of adjacent LEDs that light up with the same color is:

[tex]N = 4 - 4 \times 3^{n - 1}[/tex]

What is the Fundamental Counting Theorem?

It is a theorem that states that if there are n trials, each with [tex]n_1, n_2, \cdots, n_n[/tex] possible results, each thing independent of the other, the number of results is given as follows:

[tex]N = n_1 \times n_2 \times \cdots \times n_n[/tex]

In the context of this problem, there are n LEDs, each with 4 possible colors, hence he total number of sequences is:

[tex]T = 4^n[/tex]

For sequences with no repeating LEDs, we have that:

The first LED can have 4 outcomes.Any of the following LEDs can have 3 outcomes. (except the color of the previous one).

Hence the number is:

[tex]T_n = 4 \times 3^{n-1}[/tex]

(n - 1) as the first LED is not included on those with 3 possibilities.

Having at least one repeating and no repeating are complementary events, hence the number of sequences is:

[tex]N = 4 - 4 \times 3^{n - 1}[/tex]

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Tonya spends 55% of her savings on a new dress. If she saved $120, how much was the dress? mathematical representation.
a50/23 = b
b.0.55 x 120 = d
c.190x = 45; change the decimal to a %
d.x/45 = 190; change the decimal to a %
e.55d = 120
f.23 x 50 = b
g.23/50 = b
h.2.50/45 = p
i.2.50p = 45
j..23 x 50 = b
k..45 x 190 = x
l..55d = 120

Answers

The coat of the dress based on the percentage is $66.

How to calculate the value?

From the information, it was stated that Tonya spends 55% of her savings on a new dress and that she saved $120.

Let the cost of the dress be represented as x

Therefore, the appropriate information given I'll be expressed as:

= 55% × 120 = x

0.55 × 120 = x

Multiply

x = 66

The amount spent is $66.

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A group fitness gym classifies its fitness class attendees by class type and member status. The marketing team has gathered data from a random month, in which therewere 2153 class attendees. The data is summarized in the table below.Class Type and Member Status of ClassAttendeesClass TypeBarreBoot CampBoxingSpinningYogaMember207230291233239Non-Member196185180176216What is the probability that an attendee does not attend a barre class? Enter a fraction or round your answer to 4 decimal places, if necessary.

Answers

The total number associated to barre class is 207 + 196 = 403

Therefore, the probability that a attendee does not attend a barre class is given by 403/2153 = 0.1872

Simplify 4 - 2y +(-8y) +7.3.4-2y+ ( 8y) +7.3=Q(Simplify your answer. Use integers or decimals for any numbers in theWhat is 4-2y+(-8y)+7.3

Answers

Simplifying an equation

In order to simplify an equation we want to add all the terms with the same unkowns.

In the equation

4 - 2y + (-8y) + 7.3

we can see that there are terms with y and numbers alone.

We combine like terms:

Terms with y: -2y,

At the bakery cupcakes are displayed in 12 rows with 6 cupcakes per row. If a
customer buys 24 cupcakes, how many cupcakes are left?

Answers

If there are 12 rows of cupcakes with 6 in each row, there is 72 cupcakes total. (12*6=72)
If a customer buys 24 cupcakes there are 48 cupcakes left. (72-24=48)

Charlotte has 41 m of fencing to build a three-sided fence around a rectangular plot of land that sits on a riverbank. (The fourth side of the enclosure would be the river.) The area of the land is 204 square meters. List each set of possible dimensions (length and width) of the field.

Answers

Answer:

L x W = 8.5 x 24 or 12 x 17

Step-by-step explanation:

x (41 -2x) =204

-2x^2 + 41x -204 = 0 Use Quadratic Formula to find x = 8.5 or 12

(x-8.5)(x-12) = 0

two sides = 8.5 and river/third side = 24

or two sides 12 and river/thirdside = 17

Determine if it has a minimum of maximum and what that value is whilst also Identifying the domain and range

Answers

Hello!

First, let's rewrite the expression here:

[tex]f\mleft(x\mright)=-2x^2+12x-15[/tex]

We will have to find the coefficients a, b and c:

• a ,= -2;

• b ,= 12;

• c ,= -15;

As we can see, coefficient a is negative. It means that the parabola will face downwards and have a maximum value.

We can obtain this point by using the two formulas below to calculate the coordinates (x, y) of this point, look:

[tex]\begin{gathered} X_V=\text{ }-\frac{b}{2\cdot a} \\ \\ Y_V=-\frac{b^2-4\cdot a\cdot c}{4\cdot a} \end{gathered}[/tex]

As we know the coefficients, let's replace the values in the formulas:

Xv:

[tex]\begin{gathered} X_V=-\frac{b}{2\cdot a} \\ \\ X_V=-\frac{12}{2\cdot(-2)}=-\frac{12}{-4}=-(-3)=+3 \\ \\ X_V=3 \end{gathered}[/tex]

Now let's find Yv:

[tex]\begin{gathered} Y_V=-\frac{b^2-4\cdot a\cdot c}{4\cdot a} \\ \\ Y_V=-\frac{12^2-4\cdot(-2)\cdot(-15)}{4\cdot(-2)}=-\frac{144-120}{-8}=-\frac{24}{-8}=-(-3)=+3 \\ \\ Y_V=3 \end{gathered}[/tex]

Doing this, we obtained the coordinate of the maximum point (x, y) = (3, 3).

As it doesn't have any restrictions, the domain will be: [-∞, +∞].

[tex]-\infty\: We have one restriction in the range, do you remember which?

The maximum value will be when y = 3, so the range is [-∞, 3].

Look at the graph of this function below:

stionsUse the graph at the left to answer the questions in thetable.Your AnswerQuestionIdentify the x-intercept. Usean ordered pair to answer thequestionIdentity the y-intercept. Uzean ordered pair to answer thequestionWhat is the rate or slope ofthe graph?10What is the domain of thegraph?What is the range of thegraph?

Answers

Answer:

x-intercept: (-0.5,0)

y-intercept: (0,1)

Slope: 2

Domain: All real values

Range: All real values

Step-by-step explanation:

x-intercept:

The x-intercept is the value of x when y = 0. In this graphic, we have that when y = 0, x = -0.5. So the x-intercept is given by: (-0.5,0)

y-intercept:

The y-intercept is the value of y when x = 0. In this graphic, we have that when x = 0, y = 1. So the y-intercept is given by: (0,1).

Slope:

To find the slope, we select two points. The slope is given by the division of the change in y by the change in x.

Two points: (-0.5, 0) and (0,1)

Change in y: 1 - 0 = 1

Change in x: 0 - (-0.5) = 0 + 0.5 = 0.5

Slope: 1/0.5 = 2

Domain and range:

In a line, the domain is all real values, the same for the range.

a line perpendicular to y = 2x +4 through (4.2) slope of the new line equationequation of the new line

Answers

y= 2x+4

Slope-intercept form

y=mx+b

Where:

m= slope

b= y-intercept

y=2x+4

Slope = m= 2

Perpendicular lines have negative reciprocal slopes.

So, the slope of the new line = -1/2

New equation:

y= -1/2x+b

Replace x,y by the point (4,2) and solve for b:

2 = -1/2(4)+b

2= -2 + b

2+2 = b

4 = b

New line equation:

y= -1/2x+4

Suppose a basketball player has made 359 out of 449 free throws. If the player makes the next 3 free throws, I will pay you $39. Otherwise you pay me $43.

Step 1 of 2 : Find the expected value of the proposition

Answers

The expected value of the proposition is $22.6

How to determine the expected value?

The given parameters are

Proportions of free throws = 359 out of 449Amount paid for making a throw = $39Amount collected for losing a throw = $43

Represent the proportion as a fraction

So, we have

p = 359/449

The expected value is then calculated as

E(x) = p * Amount paid for making a throw - (1 - p) * Amount collected for losing a throw

Where p represents the proportion defined above

So, we have

E(x) = 359/449 * 39 - (1 - 359/449) * 43

Evaluate the difference

E(x) = 359/449 * 39 - 90/449 * 43

So, we have

E(x) = 22.6

Hence, the proposition has an expected value of $22.6