The scale drawing car length is 3cm. If the scale is 1cm:4ft, what is the actual car length?

Answer: f(x)= -0.333x + 2,333

The axis of symmetry of the parabola is 8.

The vertex of the parabola is (8, -1).

The vertex of a parabola in standard form, y = ax² + bx + c, is given by:

Vertex, (h, k) = (-b/2a, c - b²/4a)

For y = -x² + 16x − 65:

a = -1, b = 16 and c = -65

-b/2a = -16/2(-1)

-b/2a = 8

c - b²/4a = -65 -  (16)²/4(-1)

c - b²/4a = -65 + 64

c - b²/4a = -1

Vertex, (h, k) = (8, -1)

For a parabola in standard form, y = ax² + bx + c, the axis of symmetry of the parabola is given by:

x = -b/2a

For y = -x² + 16x − 65:

a = -1 and b = 16

Thus, the axis of symmetry of the parabola is:

x =  -16/2(-1)

x = 8

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Expanding the function expression f(x) = x^2 - 1, we get f(x) = (x - 1)(x + 1)

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

f(x) = x^2 - 1

The above expression can be expanded using the difference of two squares

When this theorem is applied, we have

f(x) = (x - 1)(x + 1)

Hence, the function expression f(x) = x^2 - 1 when expanded is f(x) = (x - 1)(x + 1)

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Expanding the function expression f(x) = x^2 - 1, we get f(x) = (x - 1)(x + 1)

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

f(x) = x^2 - 1

The above expression can be expanded using the difference of two squares

When this theorem is applied, we have

f(x) = (x - 1)(x + 1)

Hence, the function expression f(x) = x^2 - 1 when expanded is f(x) = (x - 1)(x + 1)

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Answer:

[tex]x=2\frac{5}{12}[/tex]

Step-by-step explanation:

Given equation:

[tex]-3\frac{3}{4}-x=-6\frac{1}{6}[/tex]

Begin by adding x to both sides of the equation:

[tex]-3\frac{3}{4}-x+x=-6\frac{1}{6}+x[/tex]

[tex]-3\frac{3}{4}=-6\frac{1}{6}+x[/tex]

Add -6¹/₆ to both sides of the equation:

[tex]-3\frac{3}{4}+6\frac{1}{6}=-6\frac{1}{6}+x+6\frac{1}{6}[/tex]

[tex]-3\frac{3}{4}+6\frac{1}{6}=x[/tex]

Swap sides:

[tex]x=6\frac{1}{6}-3\frac{3}{4}[/tex]

Rewrite the mixed numbers as improper fractions by multiplying the whole number by the denominator of the fraction, adding this to the numerator of the fraction, and placing the answer over the denominator:

[tex]x=\dfrac{6 \times6+1}{6}-\dfrac{3 \times 4+3}{4}[/tex]

[tex]x=\dfrac{36+1}{6}-\dfrac{12+3}{4}[/tex]

[tex]x=\dfrac{37}{6}-\dfrac{15}{4}[/tex]

When subtracting fractions, we must ensure that they have the same denominator.  To do this, find the least common multiple (LCM) of the two denominators.

As 6 and 4 are factors of 12, then 12 is the LCM.

Rewrite the fractions as their equivalent fractions (with a denominator of 12) by multiplying the numerator and denominator by the same number.

[tex]x=\dfrac{37\times 2}{6\times 2}-\dfrac{15\times3}{4\times3}[/tex]

[tex]x=\dfrac{74}{12}-\dfrac{45}{12}[/tex]

Now the fractions all have the same denominator, we can simply subtract the numerators:

[tex]x=\dfrac{74-45}{12}[/tex]

[tex]x=\dfrac{29}{12}[/tex]

Finally, convert the improper fraction into a mixed number:

[tex]x=\dfrac{24+5}{12}[/tex]

[tex]x=\dfrac{24}{12}+\dfrac{5}{12}[/tex]

[tex]x=2+\dfrac{5}{12}[/tex]

[tex]x=2\frac{5}{12}[/tex]

Answer:

0

Step-by-step explanation:

Okay, here are the steps to find the p-value:

1) The nationwide proportion of Americans who invest in the stock market is 55% (0.55)

2) The test statistic for Georgia is 1.75

3) To calculate the p-value, we need to know the degrees of freedom (df) and the critical value of the test statistic.

4) The df = 1, since we're comparing a single proportion (Georgia) to a fixed value (national average).

5) The critical value at df = 1 and 95% confidence is 3.84 (for a two-tailed test)

6) Since the test statistic of 1.75 is less than 3.84, we look up 1.75 in tables to find the p-value.

7) For a test statistic of 1.75 and df = 1, the p-value is 0.1860.

So the p-value to test if the proportion of Georgians who invest in the stock market is different than the nationwide average is 0.1860.

Let me know if you have any other questions!

Okay, here are the steps to find the p-value:

1) The nationwide proportion of Americans who invest in the stock market is 55% (0.55)

2) The test statistic for Georgia is 1.75

3) To calculate the p-value, we need to know the degrees of freedom (df) and the critical value of the test statistic.

4) The df = 1, since we're comparing a single proportion (Georgia) to a fixed value (national average).

5) The critical value at df = 1 and 95% confidence is 3.84 (for a two-tailed test)

6) Since the test statistic of 1.75 is less than 3.84, we look up 1.75 in tables to find the p-value.

7) For a test statistic of 1.75 and df = 1, the p-value is 0.1860.

So the p-value to test if the proportion of Georgians who invest in the stock market is different than the nationwide average is 0.1860.

Let me know if you have any other questions!

The annual percentage rate for Terry's loan is 19.21%.

What is statistics?

Statistics is a branch of mathematics that deals with the collection, analysis, interpretation, presentation, and organization of numerical data.

To find the annual percentage rate (APR) for Terry's loan, we can use the following formula:

APR = (2 × Monthly Payment ÷ Loan Amount) × (12 ÷ Loan Term in Months + 1)

First, we need to calculate the total amount Terry will pay for the TV over the 12-month period:

Total payments = Monthly payment × Loan term in months

Total payments = $40.03 × 12

Total payments = $480.36

Next, we can use the formula to calculate the APR:

APR = (2 × $40.03 ÷ $450) × (12 ÷ 12 + 1)

APR = (0.1774) × (1.0833)

APR = 0.1921 or 19.21%

Therefore, the annual percentage rate for Terry's loan is 19.21%.

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The table for the population of the colony at the different times of the study is found.

Calculating the exponential growth as well as decay of a given collection of data is done using an exponential function, which is a mathematical function. Exponential functions, for illustration, can be used to estimate population changes, loan interest rates, bacterial growth, radioactive decay, as well as disease spread.

Given functions are-

P(t) = 9.[tex](1.02)^{t}[/tex]

Q(t) = 9.[tex]e^{0.02t}[/tex]

Population is estimated in thousands.

Table for the population of the colony:

t (time in months)     P(t) = 9.[tex](1.02)^{t}[/tex]                   Q(t) = 9.[tex]e^{0.02t}[/tex]

6                            P(6) = 9.[tex](1.02)^{6}[/tex] = 10.13         Q(t) = 9.[tex]e^{0.02*6}[/tex]= 10.14

12                          P(12) = 9.[tex](1.02)^{12}[/tex] = 11.41        Q(t) = 9.[tex]e^{0.02*12}[/tex] = 11.44

24                        P(24) = 9.[tex](1.02)^{24}[/tex] = 38.60     Q(t) = 9.[tex]e^{0.02*24}[/tex] = 14.54        

48                        P(48) = 9.[tex](1.02)^{48}[/tex]= 23.28      Q(t) = 9.[tex]e^{0.02*48}[/tex]= 23.50

100                    P(100) = 9.[tex](1.02)^{100}[/tex] = 65.20     Q(t) = 9.[tex]e^{0.02*100}[/tex]= 66.50

Thus, the table for the population of the colony at the different times of the study is found.

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This statement describes the relationship between symmetries and rotations

In this context, "axis i" and "axis j" refer to two different coordinate axes, and "n" is the total number of axes. The notation "s_i" represents a reflection transformation across axis i, and "r_k" represents a rotation transformation that rotates the entire coordinate system by an angle of 2πk/n, where k is an integer between 0 and n-1.

The statement "Since the angle from axis j to axis i is π(i-j)/n, it follows that s_i ∘ s_j = r_{i-j}" means that if we reflect the coordinate system across axis i, and then reflect it again across axis j, the resulting transformation is equivalent to rotating the entire coordinate system by an angle of 2π(i-j)/n. In other words, the composition of the two reflections is equivalent to a single rotation.

This relationship is important in the study of group theory and symmetry, where it is used to understand the properties of groups of transformations that preserve the symmetry of an object or system.

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The calculated factored form of the expression x² + 6x - 16 is (x - 2)(x + 8)

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

x² + 6x - 16

Expand the expression

So, we have

x² + 6x - 16 = x² + 8x - 2x - 16

Factorize the expression

So, we have the following representation

x² + 6x - 16 = x(x + 8) - 2(x + 8)

Factor out x + 8

So, the expression becomes

x² + 6x - 16 = (x - 2)(x + 8)

Hence, the factored form of the expression x² + 6x - 16 is (x - 2)(x + 8)

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Check the picture below.

[tex]\textit{Law of sines} \\\\ \cfrac{\sin(\measuredangle A)}{a}=\cfrac{\sin(\measuredangle B)}{b}=\cfrac{\sin(\measuredangle C)}{c} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{\sin(54^o)}{31}=\cfrac{\sin(12^o)}{AB}\implies AB\sin(54^o)=31\sin(12^o) \\\\\\ AB=\cfrac{31\sin(12^o)}{\sin(54^o)}\implies AB\approx 8~in[/tex]

Make sure your calculator is in Degree mode.

The z-scores of the two subjects are 1.18, and 1.25 respectively

Given data ,

The z-score is a measure of how many standard deviations a data point is away from the mean of a data set.

z = (X - μ) / σ

where X is the data point, μ is the mean, and σ is the standard deviation.

For the French exam:

X = 92 (score obtained by the student)

μ = 72 (mean of the French exam)

σ = 17 (standard deviation of the French exam)

On simplifying , we get

z_french = (92 - 72) / 17 = 1.18

For the math exam:

X = 80 (score obtained by the student)

μ = 70 (mean of the math exam)

σ = 8 (standard deviation of the math exam)

z_math = (80 - 70) / 8 = 1.25

Hence , the z-scores are calculated

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Answer:

We can use vectors to solve this problem. Let's assume that the position vector of point A is a, and the position vectors of points B and C are b and c respectively.

Since D is the midpoint of BC, we can find its position vector as:

d = (b + c)/2

Now, let's find the position vectors of M, N, and I using the given conditions:

MA + MB = 0

This means that the vector MA is equal in magnitude and opposite in direction to the vector MB. Since M is a point on the line segment AB, we can write:

MA = M - a

MB = M - b

So, MA + MB = 0 gives us:

M - a + M - b = 0

2M = a + b

M = (a + b)/2

Therefore, the position vector of M is:

m = (a + b)/2

Similarly, we can find the position vectors of N and I:

3NA + NC = 0

This means that the vector NA is three times the magnitude of the vector NC, and they are in opposite directions. Since N is a point on the line segment AC, we can write:

NA = N - a

NC = N - c

So, 3NA + NC = 0 gives us:

3(N - a) + (N - c) = 0

4N = 3a + c

N = (3a + c)/4

Therefore, the position vector of N is:

n = (3a + c)/4

IM + 2IN = 0

This means that the vector IM is twice the magnitude of the vector IN, and they are in opposite directions. Since I is a point on the line segment DM, we can write:

IM = I - m

IN = I - n

So, IM + 2IN = 0 gives us:

I - m + 2(I - n) = 0

3I = 2m + 2n

I = (2m + 2n)/3

Therefore, the position vector of I is:

i = (2m + 2n)/3

So, the points M, N, and I are located at:

M = (a + b)/2

N = (3a + c)/4

I = (2m + 2n)/3

where:

m = (a + b)/2

n = (3a + c)/4

The corresponding to Vector R is 4.8 units 47 East of South 4.8 units 47circ East of South

Vector C comprises a magnitude of -3.5i

Vector D is established as –3.3j (South bearing is thought to be negative along the y-axis).

Vector R = Vector D - Vector C

= (-3.3j) - (-3.5i)

= 3.5i - 3.3j

To evaluate the strength of Vector R, we must first compute its magnitude:

Magnitude of R = √((3.5)^2 + (-3.3)^2) ≈ 4.8 units.

determine the direction,

we shall need to calculate the angle θ with respect to the South direction (the negative y-axis):

tan(θ) = (3.5) / (3.3);

θ = arctan(3.5 / 3.3) ≈ 47°

Hence the answer is option 2

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The rate of interest according to the given data is 12.8%.

To answer this problem, we may utilize the compound interest formula:

A = P(1 + r/n)^(nt)

where A denotes the ultimate amount, P the principle, r the yearly interest rate, n the number of times the interest is compounded each year, and t the period in years.

We know that the compound interest on a certain payment over two years is Rs. 2600. Let us refer to the principal as P. Then we may type:

2600 = P(1 + r/100)^2 - P

When we simplify this equation, we get:

2600 = P[(1 + r/100)^2 - 1]

Dividing both sides by P[(1 + r/100)^2 - 1], we get:

1 = 1/[(1 + r/100)^2 - 1]

Simplifying even further, we get:

1 + (1 + r/100)^2 - 1 = (1 + r/100)^2

Taking the square root of both sides yields:

1 + r/100 = 1 + sqrt(2600/2500)

1 + r/100 = 1 + 0.04

r/100 = 0.04

r = 4%

As a result, the yearly interest rate is 4%. This, however, is the basic interest rate. To get the compound interest rate, use the following formula:

CI = P(1 + r/100)^2 - P

2500 = P(1 + 4/100)^2 - P

Simplifying this equation, we get:

2500 = P(1.04^2 - 1)

2500 = P(0.0816)

P = 30637.25

So the principal is Rs. 30637.25, and the annual compound interest rate is:

r = 100[(30637.25/10000)^(1/2) - 1]

r = 12.8%

Therefore, the rate of interest is 12.8% (rounded off to one decimal place).

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Answer:

c

=

5

9

⋅

(

f

−

32

)

Rewrite the equation as

5

9

⋅

(

f

−

32

)

=

c

.

5

9

⋅

(

f

−

32

)

=

c

Multiply both sides of the equation by

9

5

.

9

5

(

5

9

⋅

(

f

−

32

)

)

=

9

5

c

Simplify both sides of the equation.

Tap for more steps...

f

−

32

=

9

c

5

Add

32

to both sides of the equation.

f

=

9

c

5

+

32

Answer:

Option (B) 86.7 is the correct answer.

Step-by-step explanation :

Dividing the given diagram in 5 parts :

Firstly finding the area of one right angle triangle :

[tex]\dashrightarrow\sf{Area_{(\triangle)} = \dfrac{1}{2} \times b \times h}[/tex]

substituting all the given values in the formula :

[tex]\dashrightarrow\sf{Area_{(\triangle)} = \dfrac{1}{2} \times 5.1 \times 5.95}[/tex]

[tex]\dashrightarrow\sf{Area_{(\triangle)} = \dfrac{1 \times 5.1 \times 5.95}{2}}[/tex]

[tex]\dashrightarrow\sf{Area_{(\triangle)} = \dfrac{5.1 \times 5.95}{2}}[/tex]

[tex]\dashrightarrow\sf{Area_{(\triangle)} = \dfrac{30.345}{2}}[/tex]

[tex]\dashrightarrow\sf{Area_{(\triangle)} = 15.1725\: {cm}^{2}}[/tex]

Hence, the area of right angle triangle is 15.1725 cm².

[tex]\begin{gathered} \end{gathered}[/tex]

Here we have 4 right angle triangle with equal base and height and we have already find the area of one right angle triangle. So, the area of 4 triangle will be :

[tex]\dashrightarrow\sf{Area_{(\triangle)} = 15.1725 \: {cm}^{2}}[/tex]

[tex]\dashrightarrow\sf{Area \: of \: 4{(\triangle)} = 15.1725 \times 4}[/tex]

[tex]\dashrightarrow\sf{Area \: of \: 4{(\triangle)} = 60.69 \: {cm}^{2}}[/tex]

Hence, the area of 4 right angle triangles is 60.69 cm².

[tex]\begin{gathered} \end{gathered}[/tex]

Now, we have to find the area of square

[tex]\longrightarrow\sf{Area_{(Square)} = {a}^{2}}[/tex]

Substituting the given value in the formula :

[tex]\longrightarrow\sf{Area_{(Square)} = {(5.1)}^{2}}[/tex]

[tex]\longrightarrow\sf{Area_{(Square)} = {(5.1 \times 5.1)}}[/tex]

[tex]\longrightarrow\sf{Area_{(Square)} = 26.01 \: {cm}^{2}}[/tex]

Hence, the area of square is 26.01 cm².

[tex]\begin{gathered} \end{gathered}[/tex]

Now, calculating the total area :

[tex]{\sf{\implies{Total \: Area = Area_{(\triangle)} + Area_{(Square)}}}}[/tex]

[tex]{\sf{\implies{Total \: Area = 60.69 + 26.01}}}[/tex]

[tex]{\sf{\implies{Total \: Area = 86.7 \: {cm}^{2}}}}[/tex]

Hence, the total area of given diagram is 86.7 cm².

Answer:

Option (B) 86.7 is the correct answer.

Step-by-step explanation :

Dividing the given diagram in 5 parts :

Firstly finding the area of one right angle triangle :

[tex]\dashrightarrow\sf{Area_{(\triangle)} = \dfrac{1}{2} \times b \times h}[/tex]

substituting all the given values in the formula :

[tex]\dashrightarrow\sf{Area_{(\triangle)} = \dfrac{1}{2} \times 5.1 \times 5.95}[/tex]

[tex]\dashrightarrow\sf{Area_{(\triangle)} = \dfrac{1 \times 5.1 \times 5.95}{2}}[/tex]

[tex]\dashrightarrow\sf{Area_{(\triangle)} = \dfrac{5.1 \times 5.95}{2}}[/tex]

[tex]\dashrightarrow\sf{Area_{(\triangle)} = \dfrac{30.345}{2}}[/tex]

[tex]\dashrightarrow\sf{Area_{(\triangle)} = 15.1725\: {cm}^{2}}[/tex]

Hence, the area of right angle triangle is 15.1725 cm².

[tex]\begin{gathered} \end{gathered}[/tex]

Here we have 4 right angle triangle with equal base and height and we have already find the area of one right angle triangle. So, the area of 4 triangle will be :

[tex]\dashrightarrow\sf{Area_{(\triangle)} = 15.1725 \: {cm}^{2}}[/tex]

[tex]\dashrightarrow\sf{Area \: of \: 4{(\triangle)} = 15.1725 \times 4}[/tex]

[tex]\dashrightarrow\sf{Area \: of \: 4{(\triangle)} = 60.69 \: {cm}^{2}}[/tex]

Hence, the area of 4 right angle triangles is 60.69 cm².

[tex]\begin{gathered} \end{gathered}[/tex]

Now, we have to find the area of square

[tex]\longrightarrow\sf{Area_{(Square)} = {a}^{2}}[/tex]

Substituting the given value in the formula :

[tex]\longrightarrow\sf{Area_{(Square)} = {(5.1)}^{2}}[/tex]

[tex]\longrightarrow\sf{Area_{(Square)} = {(5.1 \times 5.1)}}[/tex]

[tex]\longrightarrow\sf{Area_{(Square)} = 26.01 \: {cm}^{2}}[/tex]

Hence, the area of square is 26.01 cm².

[tex]\begin{gathered} \end{gathered}[/tex]

Now, calculating the total area :

[tex]{\sf{\implies{Total \: Area = Area_{(\triangle)} + Area_{(Square)}}}}[/tex]

[tex]{\sf{\implies{Total \: Area = 60.69 + 26.01}}}[/tex]

[tex]{\sf{\implies{Total \: Area = 86.7 \: {cm}^{2}}}}[/tex]

Hence, the total area of given diagram is 86.7 cm².

The y-intercept is (0, 10) and the values of x that make sense are x > 0

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

y = 10(2)^x

The graph is added as an attachment

This is the point of intersection with the y-axis

From the graph, it is (0, 10)

These are the values whose corresponding y values are not negative

In other words, the values are x > 0

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The probability that the next bolt found would be non-defective is 0.98 or 98%.

A fundamental idea in mathematics and statistics, probability theory has several uses in the sciences, engineering, business, and social sciences. It is used to assess risks and uncertainties in diverse circumstances, analyse and forecast the possibility of events happening, and make decisions in the face of uncertainty.

Given:

Number of bolts already examined = 600

Number of defective bolts found = 12

Number of non-defective bolts = Total number of bolts examined - Number of defective bolts

= 600 - 12

= 588

Probability of finding a non-defective bolt = Number of non-defective bolts / Total number of bolts

= 588 / 600

= 0.98 or 98%

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The biggest standard deviation belongs to B. 1,6,3,15,4,12,8. This is due to the fact that this data set's range of values is substantially wider than that of the other sets, which raises the standard deviation.

what does standard deviation mean?

In statistics, standard deviation is a measure of the amount of variability or dispersion in a set of data. It measures how spread out the data is from the mean or average value.

The standard deviation serves as a gauge for how widely dispersed from the mean a set of data is. It is calculated by averaging the squared deviations from the mean, or variance, which is the variance expressed as a square root. In statistics and probability theory, the standard deviation is frequently used to quantify the variability of a data collection. It is crucial to understand that standard deviation differs from a data set's range, which is only the difference between greatest and lowest values.

Because standard deviation accounts for all of the data points in the set, it is a more accurate statistic.

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Complete Question:

Which data set has the largest standard deviation

A.3,4,3,4,3,4,3

B.1,6,3,15,4,12,8

C. 20, 21,23,19,19,20,20

D.12,14,13,14,12,13,12

The length of the arc, x, subtended by an angle of 74° in a circle with a radius of 8 inches is approximately 13.1 inches.

A central angle is an angle with endpoints located on a circle's circumference and a vertex located at the circle's center (Rhoad et al. 1984, p. 420). A central angle in a circle determines an arc.

The length of an arc, x, subtended by an angle of 74° in a circle with a radius of 8 inches can be found using the formula:

x = (θ/360) × 2πr

where θ is the central angle in degrees, r is the radius of the circle, and π is the mathematical constant pi.

x = (74/360) × 2π(8)

x ≈ 4.17π

To get the value to the nearest tenth of an inch, we can use the approximation π ≈ 3.14:

x ≈ 4.17 × 3.14

x ≈ 13.1

Therefore, the length of the arc, x, subtended by an angle of 74° in a circle with a radius of 8 inches is approximately 13.1 inches.

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The calculated value of the measure of the arc HI is 55 degrees

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

The circle

The sum of angles at a point is 360

So, we have

∠HAI + 60 + 100 + 145 = 360

When the like terms are evaluated, we have

∠HAI = 55

The angle subtended by the arc equals the angle at the center

This means that

mHI = ∠HAI

By substitution, we have

mHI = 55 degrees

Hence, the arc HI is 55 degrees

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Step-by-step explanation:

[tex]2 \times \frac{5}{6} = \frac{17}{6} [/tex]

[tex]1 \times \frac{3}{5} = \frac{8}{5} [/tex]

[tex] \frac{17}{6} - \frac{8}{5} [/tex]

[tex] \frac{17}{6} \times 5 = \frac{85}{30} [/tex]

[tex] \frac{8}{5} \times 6 = \frac{48}{30} [/tex]

[tex] \frac{85}{30} - \frac{48}{30} = \frac{37}{30} [/tex]

[tex]37 \div 30 = 7 \times \frac{1}{30} [/tex]

so 7 1/30

Answer:

D

Step-by-step explanation:

i think its D because next to x the y coordinate is 112.8

The percent of fat calories an American consumes each day is normally distributed with a mean of 36 and a standard deviation of about 10.

Standard deviation is a measure of the spread of a data set. It is calculated by taking the square root of the variance of the data set. It is a measure of how much the individual values in a data set are spread out from the mean. It is used to quantify the amount of variation or dispersion of a set of data values.

According to the Central Limit Theorem, the mean of the sample X will be normally distributed with a mean of 36 and a standard deviation of 10/sqrt(20). This means that the mean percent of fat calories in the sample will be normally distributed with a mean of 36 and a standard deviation of about 3.16. This means that 68% of the time, the mean percent of fat calories in the sample will be between 32.84 (36-3.16) and 39.16 (36+3.16), 95% of the time it will be between 29.68 (36-6.32) and 42.32 (36+6.32), and 99% of the time it will be between 26.52 (36-9.48) and 45.48 (36+9.48).

In other words, this is happening because the Central Limit Theorem states that the sample mean will be normally distributed, and that the standard deviation of the sample mean will be the standard deviation of the population divided by the square root of the sample size. By understanding this theorem, we can calculate the probability that the mean of the sample will fall within certain ranges.

In conclusion, the percent of fat calories an American consumes each day is normally distributed with a mean of 36 and a standard deviation of about 10. By understanding the Central Limit Theorem, we can calculate the probability that the mean of the sample will fall within certain ranges. This allows us to make predictions about the sample mean and helps us understand why this is happening.

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The solution for r is:

r = ln(539)/ln(13) - 9

And an estimation is:

r = -6.5478

Remember the rule for logarithms of powers:

ln(x^n) = n*ln(x)

Now let's look at our equation, here we have:

539 = 13^(r + 9)

We want to solve this equation for r, to do so, we can apply the natural logarithm in both sides:

ln(539) = ln( 13^(r + 9))

Using the rule we can rewrite this as:

ln(539)= (r + 9)*ln(13)

Now just solve the equation for r:

r = ln(539)/ln(13) - 9

And an approximate solution is:

r = -6.5478

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Answer:

Step-by-step explanation:

To add these fractions, we need a common denominator. The smallest common multiple of 3 and 5 is 15.

Converting 2/3 to fifteenths:

2/3 = 10/15

Converting 1/5 to fifteenths:

1/5 = 3/15

Now, we can add:

5 10/15 + 3 3/15 = 8 13/15

Therefore, the amount of snowfall in the two months combined was 8 13/15 feet.