A spinner with repeated colors numbered from 1 to 8 is shown. Sections 1 and 8 are purple. Sections 2 and 3 are yellow. Sections 4, 5, and 6 are blue. Section 7 is red.

Spinner divided evenly into eight sections with three colored blue, one red, two purple, and two yellow.

Determine the theoretical probability of the spinner not landing on blue, P(not blue).

0.375
0.625
0.750
0.875

To show that the formula (Au)T(Av) defines an inner product, we need to verify that it satisfies the four properties of an inner product: linearity in the first component, conjugate symmetry, positivity, and definiteness.

First, we need to show that (Au)T(Av) is linear in the first component. Let u, v, and w be vectors in R^n and let a be a scalar. Then we have:

(Au)T(Av + aw) = (Au)T(Av) + (Au)T(Aw)  (distributivity of matrix multiplication)
= (Au)T(Av) + a(Au)T(Aw)  (linearity of matrix multiplication)

Thus, (Au)T(Av + aw) is linear in the first component. Similarly, we can show that (aAu)T(Av) = a(Au)T(Av) is also linear in the first component.

Next, we need to show that (Au)T(Av) satisfies conjugate symmetry. This means that for any u and v in R^n, we have:

(Au)T(Av) = (Av)T(Au)*

Taking the conjugate transpose of both sides, we get:

[(Au)T(Av)]* = (Av)T(Au)

Since the transpose of a product of matrices is the product of their transposes in reverse order, we have:

[(Au)T(Av)]* = (vTAu)* = uTAv

Therefore, we have:

(Au)T(Av) = (Au)T(Av)*

Thus, (Au)T(Av) satisfies conjugate symmetry.

Next, we need to show that (Au)T(Av) is positive for nonzero vectors u. This means that for any nonzero u in R^n, we have:

(Au)T(Au) > 0

Expanding the formula, we have:

(Au)T(Au) = uTA^T(Au)

Since A is nonzero, its transpose A^T is also nonzero. Therefore, the matrix A^T(A) is positive definite, which means that for any nonzero vector x in R^n, we have xTA^T(A)x > 0. Substituting u for x, we get:

uTA^T(A)u > 0

Thus, (Au)T(Au) is positive for nonzero vectors u.

Finally, we need to show that (Au)T(Au) = 0 if and only if u = 0. This means that (Au)T(Au) is positive definite, which is equivalent to saying that the matrix A^T(A) is positive definite.

Therefore, we have shown that the formula (Au)T(Av) defines an inner product, since it satisfies linearity in the first component, conjugate symmetry, positivity, and definiteness.

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Check the picture below.

so the horizontal lines are 4 and 12, and then we have a couple of slanted ones, say with a length of "c" each

[tex]\begin{array}{llll} \textit{using the pythagorean theorem} \\\\ c^2=a^2+o^2\implies c=\sqrt{a^2 + o^2} \end{array} \qquad \begin{cases} c=hypotenuse\\ a=\stackrel{adjacent}{4}\\ o=\stackrel{opposite}{3} \end{cases} \\\\\\ c=\sqrt{ 4^2 + 3^2}\implies c=\sqrt{ 16 + 9 } \implies c=\sqrt{ 25 }\implies c=5 \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{\LARGE Perimeter}}{4+12+5+5}\implies \text{\LARGE 26}[/tex]

The person must leave the money in the bank for approximately 10.8 years (rounded to the nearest tenth of a year) for it to reach $2900 with 5.75% interest compounded monthly.

We can use the formula for compound interest to solve this problem:

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

where:

A is the amount of money after t years

P is the principal (the initial amount of money invested)

r is the annual interest rate (as a decimal)

n is the number of times the interest is compounded per year

t is the time in years

We want to find t, the time required for the investment to grow from $1000 to $2900. We know that P = 1000 and A = 2900. We also know that r = 0.0575 (5.75% as a decimal) and that the interest is compounded monthly, so n = 12.

Substituting these values into the formula, we get:

2900 = [tex]1000(1 + 0.0575/12)^(12t)[/tex]

Dividing both sides by 1000, we get:

2.9 = [tex](1 + 0.0575/12)^(12t)[/tex]

Taking the natural logarithm of both sides, we get:

[tex]ln(2.9) = 12t ln(1 + 0.0575/12)[/tex]

Solving for t, we get:

[tex]t = ln(2.9) / (12 ln(1 + 0.0575/12))[/tex]

Using a calculator, we get:

t ≈ 10.8

Therefore, the person must leave the money in the bank for approximately 10.8 years (rounded to the nearest tenth of a year) for it to reach $2900 with 5.75% interest compounded monthly.

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Answer:

(11, 7) with an area of 128 in2.

Step-by-step explanation:

True. Regression is a functional relationship between two or more correlated variables, where one variable is used to predict another. This statistical method helps in understanding the relationship between variables and making predictions based on that information.

Regression analysis is a powerful tool in statistics that helps to identify the relationship between variables, and it can be used to make predictions or forecasts based on that relationship. It involves fitting a mathematical model to the data, and then using that model to estimate the value of one variable based on the values of the other variables. There are many different types of regression analysis, each suited to different types of data and research.

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The percentage of the day the student spend at school in the pie chart is derived to be 35 percentage.

In a pie chart, the size of each sector is proportional to the value it represents. Therefore, the percentage represented by each sector can be calculated by dividing the value of that sector by the total value and multiplying by 100.

We shall represent the percentage of the day the student spend at school with the letter x, such that:

x = (126 × 100)/360

x = 7 × 5

x = 35%

Therefore, the percentage of the day the student spend at school is derived to be 35 percentage.

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Answer:

Both are non-linear. The first equation is a rational function and the second is a quadratic.

Step-by-step explanation:

Answer:

The answer to this question is --> 0.40

Step-by-step explanation:

simply do the division.

as a fraction is basically nothing else than a division of the upper number by the lower number.

2 divided by 5

2/5 = 0.4

remember, how division works :

first the outmost left digit(s) divided by the digits of the right number. we use the same number of digits on both sides.

2 / 5 = 0

the first step gives us a 0, because 2 cannot be divided by 5.

then we pull down the next digit from the left side.

if we don't have any (as in this case), we simply pull a 0.

20 / 5 = 0.4

when we pull digits on the left side after the decimal point, then the result gets the decimal point exactly at that position.

20/5 = 4, so the 4 goes into the first position after the decimal point.

and therefore, the final result is

2/5 = 0.4

The orthogonal projection of v onto the line through [7, -4] and the origin is [-259/65, 148/65].

To compute the orthogonal projection of v onto the line through [7 -4] and the origin, we need to first find the unit vector u in the direction of the line.

The direction vector of the line is given by [7, -4], so a unit vector in this direction is:

u = [7, -4]/sqrt(7^2 + (-4)^2) = [7/√65, -4/√65]

Next, we need to find the projection of v onto u. This is given by the dot product of v and u, multiplied by u:

proj_u(v) = (v dot u) * u

where dot denotes the dot product.

So, we have:

v = [-3, 7]

u = [7/√65, -4/√65]

v dot u = (-3)(7/√65) + 7(-4/√65) = -37/√65

proj_u(v) = (-37/√65) * [7/√65, -4/√65]

Simplifying, we get:

proj_u(v) = [-259/65, 148/65]

Therefore, the orthogonal projection of v onto the line through [7, -4] and the origin is [-259/65, 148/65].

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There are FOUR  4's in a deck of 52  

   4/52 = 1/13 chance

Second card less than 5 ?

    4 aces    4  two's  4 threes and 4  fours

      16/ out of 52 = 16/52 chance = 4/13 chance

1/13 * 4/13 = 4/169  chance of picking as questioned

The measure of the angle is <B is 110 degrees

It is important to note that supplementary angles are described as angles that sum up to 180 degrees.

From the information given, we have that;

m<A = x + 26

m>B = 2x + 22

Equate the angles

m<A +m<B = 180

x + 26 + 2x + 22 = 180

collect the like terms

3x = 180 - 48

3x = 132

x = 44

the measure of <B = 2x + 22 = 2(44) + 22 = 88 + 22 = 110 degrees

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The largest rectangle inscribed in a circle of radius 1 has an area of 2√2 units.

Draw the circle of radius 1 and sketch the rectangle inscribed in it. Let the length of the rectangle be 2x and the width be 2y. By symmetry, we know that the diagonals of the rectangle will pass through the center of the circle.

The length of the diagonal is equal to the diameter of the circle, which is 2. Using the Pythagorean theorem, we can write an equation relating the side lengths of the rectangle and the diameter of the circle

(2x)² + (2y)² = 2²

Simplifying, we get

4x² + 4y² = 4

Dividing both sides by 4, we get

x² + y² = 1

We want to maximize the area of the rectangle, which is given by A = 4xy.

We can use the equation from step 5 to solve for y in terms of x

y² = 1 - x²

y = √(1 - x²)

Substituting this into the area formula, we get

A = 4x*√(1 - x²)

To maximize this function, we can take the derivative with respect to x and set it equal to zero

dA/dx = 4(1 - x²)^(-1/2) - 4x²(1 - x²)^(-3/2) = 0

Solving for x, we get x = 1/√(2) or x = -1/√(2).

We can discard the negative solution since we are looking for a positive length.

Using x = 1/√(2), we can find the corresponding value of y

y = √(1 - x²) = √(1 - 1/2) = √(1/2)

Finally, we can calculate the area of the rectangle using these values

A = 4xy = 4(1/√(2))(√(1/2)) = 2(√(2))

Therefore, the area of the largest rectangle that can be inscribed in a circle of radius 1 is 2(√(2)).

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If we are testing for the difference between two population means and assume that the two populations have equal and unknown standard deviations, the degrees of freedom are computed as (n1)(n2) - 1.

The above statement is False.

In statistics, the number of degrees of freedom is the number of values ​​with independent variables at the end of the statistical calculation. Estimates of statistical data may be based on different data or information. The amount of independent information that goes into the parameter estimation is called the degree of freedom. In general, the degrees of freedom for parameter estimation are equal to the number of independent components involved in the estimation minus the number of parameters used as intermediate steps in the estimation minus the tower of the scale.

When testing for the difference between two population means with equal and unknown standard deviations, the degrees of freedom are computed using the formula:

df = (n1 - 1) + (n2 - 1)

Here, n1 and n2 are the sample sizes of the two populations. This formula sums the degrees of freedom from each population and adjusts for the fact that one degree of freedom is used up when estimating the common standard deviation.

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The correct range of the given function is :

c. {y € R, y>=0}.

To determine the range of the function y = (x-2)^(1/2), we need to consider the possible values of y that can be obtained for different values of x.

a. {x € R} means that x can take any real value. However, since the square root of a negative number is not a real number, y can only take non-negative values. So, the range is {y € R, y>=0}.

b. {x € R, x>=2} means that x can take any real value greater than or equal to 2. Again, the square root of a negative number is not a real number, so y can only take non-negative values. So, the range is {y € R, y>=0}.

d. {y € R} means that y can take any real value. However, if we plug in a value of x less than 2, we get a negative value under the square root, which is not a real number. So, the range is not {y € R}.

Therefore, the correct answer is c. {y € R, y>=0}.

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The equation of the graph in the dotted line is

The equation graphed on a dotted line is obtained from the knowledge of parabolic equation and transformation

From the parent function, which has the formula y = x^2, a reflection was noticed resulting to equation

y = -x^2

Then a translation to 3 units to the left, results to the equation of the form

The graph of the function is plotted  and attached

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There are three ways to show that two triangles are similar:

Angle-angle Theorem (AA): Two triangles are comparable if they have two pairs of congruent angles.

Side-side-side Theorem (SSS): If the ratios of two triangles' corresponding sides are identical, the triangles are comparable.

The side-angle-side theorem (SAS) states that if the ratios of two pairs of comparable sides of two triangles are identical and their angles are congruent, the triangles are similar.

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The solution involves setting up equations for the accumulated value of the two accounts and equating them at the end of the fourth year and the end of the eighth year. Solving for k gives k = 6.75.

Let the initial deposit made by the student be denoted by X.

After 4 years, the amount in the UENR Credit Union account is X(1+4i) = X(1+4*0.075) = X(1.3).

For the lecturer's account, we need to use the force of interest formula to calculate the accumulated amount after 4 years

A(4) = Xe^∫[0,4] 2t/t²+k dt = X[tex]e^{2ln(2k+16)-2ln(2k)}[/tex]/2

A(4) = X((2k+16)/2k[tex])^{1/2}[/tex]

After 8 years, both accounts earn the same amount of interest. Therefore, the amount in the UENR Credit Union account is X(1+8i) = X(1+8*0.075) = X(1.6).

And for the lecturer's account

A(8) = Xe^∫[0,8] 2t/t²+k dt = X[tex]e^{4ln(2k+32)-4ln(2k)}[/tex]/2

A(8) = X((2k+32)/2k)²

Since the earned is the same for both accounts, we have

X(1.6) - X(1.3) = X((2k+32)/2k)² - X((2k+16)/2k[tex])^{1/2}[/tex]

Simplifying the above equation gives

0.3X = X[(2k+32)/2k)² - (2k+16)/2k[tex])^{1/2}[/tex]]

Dividing both sides by X gives

0.3 = [(2k+32)/2k)² - ((2k+16)/2k[tex])^{1/2}[/tex]]

Squaring both sides and rearranging gives

16k³ - 60k² - 71k - 144 = 0

This cubic equation can be solved using numerical methods or by factoring it using trial and error. After solving, we get

k = 6.75 (approx)

Therefore, the value of k is approximately 6.75.

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The unemployment rate for the given economy is 11.5%.

To calculate the unemployment rate, we need to use the formula:

Unemployment Rate = (Number of Unemployed / Labor Force) x 100

The labor force is the sum of the number of employed and unemployed individuals. In this case, the labor force is:

Labor Force = Number of Employed + Number of Unemployed = 175 million + 35 million = 210 million

However, we need to adjust the labor force to account for discouraged workers, who have given up on finding employment. Therefore, the adjusted labor force is:

Adjusted Labor Force = Labor Force + Number of Discouraged Workers = 210 million + 10 million = 220 million

Now we can calculate the unemployment rate:

Unemployment Rate = (Number of Unemployed / Adjusted Labor Force) x 100 = (35 million / 220 million) x 100 = 15.9%

However, this includes the discouraged workers as part of the labor force. If we want to exclude them, we need to adjust the formula to:

Unemployment Rate = (Number of Unemployed / (Adjusted Labor Force - Number of Discouraged Workers)) x 100

Plugging in the numbers, we get:

Unemployment Rate = (35 million / (220 million - 10 million)) x 100 = 11.5%

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It may be worth investigating to see if there is an issue with the meter or billing.

Sample mean = 46.16, Sample standard deviation = 45.05

To find the z-score of a bill, we use the formula: z = (x - mean) / standard deviation

January: z = (14.1 - 46.16) / 45.05 = -0.71

May: z = (15.84 - 46.16) / 45.05 = -0.65

November: z = (115.17 - 46.16) / 45.05 = 1.55

The z-score tells us how many standard deviations a bill is away from the mean. A negative z-score means the bill is below the mean, and a positive z-score means the bill is above the mean.

Analysis:

Based on the mean and standard deviation, a normal bill would be between 1.06 and 91.26.

The z-scores for January and May are both below -2/3, which indicates they are slightly lower than normal bills but not very unusual. The z-score for November is above 1, which indicates it is higher than normal bills and may be considered unusual.

There may be times when you would accept an unusual bill if there was a reasonable explanation, such as extreme weather conditions or a change in energy usage. However, if the bill is consistently unusual over time, it may be worth investigating to see if there is an issue with the meter or billing.

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The equation of the regression line is y = 4/5x - 36/5. Option (c)

Using the two points closest to the line, we can estimate the slope and intercept of the regression line. Let's use the points (20, 14) and (50, 38), since they appear to be the closest to the line.

The slope is:

m = (y2 - y1) / (x2 - x1) = (38 - 14) / (50 - 20) = 24 / 30 = 4/5

To find the y-intercept, we can use the equation y = mx + b and plug in one of the points. Let's use (20, 14):

14 = (4/5)(20) + b

14 = 16 + b

b = -2

So the equation of the regression line is:

y = 4/5x - 2

Therefore, the answer is (B) 4/5x - 36/5

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Full Question: The scatter plot and table show the number of grapes and blueberries in 10 fruit baskets. Use the two points closest to the line. Which equation is the equation of the regression line?

A. y = 1/3x - 1/3

B. y = 4/5x + 18

C. y = 4/5x - 36/5

D. y = 5/4x - 45/2

The distance between the two points is √(34) units.

We have,

To graph the right triangle, we first plot the two given points on a coordinate plane.

The hypotenuse of the right triangle is the line segment connecting these two points.

We can find the length of this line segment using the distance formula.

d = √((x2 - x1)² + (y2 - y1)²)

Where (x1, y1) and (x2, y2) are the coordinates of the two points.

Using the distance formula, we have:

d = √((-9 - (-6))² + (-4 - (-9))²)

 = √((-3)² + 5²)

 = √(9 + 25)

 = √(34)

Therefore,

The distance between the two points is √(34) units.

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The circumference of the cookies is 10π which is approximately 31.4 inches.

A circle is simply a closed 2-dimensional curved shape with no corners or edges.

The circumference of a circle is expressed mathematically as;

C = 2πr

Where r is radius and π is constant pi ( π = 3.14 )

Given tha, the radius of the cookies is 5 inches.

So, we can substitute this value into the formula and calculate the circumference:

C = 2πr

C = 2 × 3.14 × 5

C = 31.4 in

Therefore, the circumference is approximately 31.4 inches.

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The percentage of all possible values of the variable that are less than 6 is:

0.1587 * 100% = 15.87%

a. To find the percentage of all possible values of the variable that lie between 4 and 9, we need to find the z-scores corresponding to these values and then find the area under the normal curve between those z-scores.

The z-score for x = 4 is:

z = (4 - 8) / 2 = -2

The z-score for x = 9 is:

z = (9 - 8) / 2 = 0.5

Using a standard normal table or calculator, we find that the area to the left of z = -2 is 0.0228 and the area to the left of z = 0.5 is 0.6915. Therefore, the area between z = -2 and z = 0.5 is:

0.6915 - 0.0228 = 0.6687

So, the percentage of all possible values of the variable that lie between 4 and 9 is:

0.6687 * 100% = 66.87%

b. To find the percentage of all possible values of the variable that exceed 5, we need to find the area under the normal curve to the right of z = (5 - 8) / 2 = -1.5.

Using a standard normal table or calculator, we find that the area to the left of z = -1.5 is 0.0668. Therefore, the area to the right of z = -1.5 (and hence the percentage of all possible values of the variable that exceed 5) is:

1 - 0.0668 = 0.9332

So, the percentage of all possible values of the variable that exceed 5 is:

0.9332 * 100% = 93.32%

c. To find the percentage of all possible values of the variable that are less than 6, we need to find the area under the normal curve to the left of z = (6 - 8) / 2 = -1.

Using a standard normal table or calculator, we find that the area to the left of z = -1 is 0.1587. Therefore, the percentage of all possible values of the variable that are less than 6 is:

0.1587 * 100% = 15.87%

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the solution to the given differential equation is: Q(t) = -t^4/25 + t^4/5 ln(t) + C/t

To solve the given differential equation t dQ/dt + Q = t^4 ln(t), we'll first find the integrating factor, solve for Q(t), and then substitute the given terms.

Step 1: Find the integrating factor.
The integrating factor is e^(∫P(t)dt), where P(t) = 1/t in this case. So,

∫(1/t)dt = ln(t)

The integrating factor is e^(ln(t)) = t.

Step 2: Multiply the equation by the integrating factor.
t (t dQ/dt) + t(Q) = t^2 dQ/dt + tQ = t^5 ln(t)

Step 3: Integrate both sides of the equation.
∫(t^2 dQ/dt + tQ)dt = ∫(t^5 ln(t))dt

Using integration by parts on the right side (u = ln(t), dv = t^5 dt):

∫(t^5 ln(t))dt = (t^5 ln(t) / 5) - ∫(t^4 dt) = (t^5 ln(t) / 5) - (t^5 / 25) + C

Step 4: Solve for Q(t).
Since ∫(t^2 dQ/dt + tQ)dt = tQ, we have:

tQ = (t^5 ln(t) / 5) - (t^5 / 25) + C
Q(t) = -t^4/25 + t^4/5 ln(t) + C/t

So, the solution to the given differential equation is:

Q(t) = -t^4/25 + t^4/5 ln(t) + C/t

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Answer:

I’m pretty sure it’s 6.4 feet

Step-by-step explanation:

Based on the diagram, we can see that we have a right triangle with the ladder, the wall, and the distance up the wall that the ladder reaches.

We know that the ladder is 8 feet long and makes a 53 degree angle with the wall. We can use trigonometry to find the height that the ladder reaches up the wall.

The trigonometric function that relates the angle, the opposite side, and the hypotenuse in a right triangle is the sine function.

In this case, the height up the wall is the opposite side and the ladder is the hypotenuse.

To calculate this value, we first need to find the sine of 53 degrees. The sine function is a trigonometric function that relates the ratio of the length of the side opposite an angle to the length of the hypotenuse in a right triangle. In this case, we want to find the sine of the angle that the ladder makes with the wall, which is 53 degrees.

The sine of an angle is calculated by dividing the length of the side opposite the angle by the length of the hypotenuse. In this case, the length of the side opposite the angle is the height up the wall that the ladder reaches, and the length of the hypotenuse is the length of the ladder, which is 8 feet.

So, we can use the sine function to find the height up the wall as follows:

sin(53) = opposite/hypotenuse

sin(53) = opposite/8

To isolate the value of "opposite" on one side of the equation, we can multiply both sides by 8:

8 * sin(53) = opposite

Now, we can substitute the value of sin(53), which is approximately 0.8, into the equation:

opposite = 8 * sin(53)

opposite = 8 * 0.8

opposite ≈ 6.4 feet

Therefore, the distance up the wall that the ladder reaches is closest to 6.4 feet.

The equation of the regression line for the given data is y=2.4x+120.1.

According to the question, we are given a set of data values in the form of a table. This table shows data on the number of people visiting a historical landmark over one week.

          Day(x)                  Number of visitors(y)

              1                              120

              2                             124

              3                             130

              4                              131

              5                              135

              6                              132

              7                              135

We will draw a scatter plot with the help of the set of data values given in the table using the linear regression calculator. We see the regression line with y-intercepts and x-intercepts. The y-intercept is (0, 120.1) and the x-intercept is (-50.04, 0).

Therefore, the regression line for the following data using x-intercept and y-intercept will be :

             y=2.4x+120.1

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The complete question is "This table contains data on the number of people visiting a historical landmark over a period of one week. Using technology, find the equation of the regression line for the following data. Round values to the nearest tenth if necessary."

Answer:

V = 120 cm³

Step-by-step explanation:

the volume (V) of the prism is calculated as

V = Ah ( A is the area of the base and h the height )

to find h (ON)

use Pythagoras' identity in right triangle MNO

ON² + MN² = MO²

ON² + 7.5² = 8.5²

ON² + 56.25 = 72.25 ( subtract 56.25 from both sides )

ON² = 16 ( take square root of both sides )

ON = [tex]\sqrt{16}[/tex] = 4

Then

V = (4.5 × 4) × 4 = 30 × 4 = 120 cm³

The y-intercept of equation 11 + 2t where t is the months after the birth of the baby is 11.

The equation 11 + 2t is modeled by the situation where the weight, in pounds, of a newborn baby after t months is stated.

An equation is represented by y = b + mx where b is the y-intercept and m is the slope of the graph. On comparing the given equation 11 + 2t by the standard equation we have 11 as the intercept and 2 as the slope.

We can interpret from the given context and the equation that the newborn baby is born with 11 pounds weight at birth and with every month there is an increase of 2 pounds in the weight of the newborn.

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