QUESTION 8 ..... [1.5 marks ] We take a sample of 700 students in Wenatchee Valley College and
observe that 80 are men. Find 90% confidence interval of the true proportion of men in the college.
Please round your answer to the nearest tenth of a percent.
§7.4
Solution. Please write your detailed solution here:

Answer:

To calculate the total cost of John and his family's meal (including tip and tax), we can follow these steps:

Calculate the tip amount by multiplying the bill amount by 20% (or 0.2): 65.00 x 0.2 = 13.00

Add the tip amount to the bill amount to get the subtotal: 65.00 + 13.00 = 78.00

Calculate the tax amount by multiplying the subtotal by 7% (or 0.07): 78.00 x 0.07 = 5.46

Add the tax amount to the subtotal to get the total cost: 78.00 + 5.46 = $83.46

Therefore, the total cost of John and his family's meal (including tip and tax) was $83.46.

To calculate the price of the suede jacket with a 20% discount and 8% tax, we can follow these steps:

Calculate the amount of the discount by multiplying the original price by 20% (or 0.2): 250 x 0.2 = 50

Subtract the discount amount from the original price to get the sale price: 250 - 50 = $200

Calculate the tax amount by multiplying the sale price by 8% (or 0.08): 200 x 0.08 = 16

Add the tax amount to the sale price to get the total price: 200 + 16 = $216

Therefore, the total price of the suede jacket with a 20% discount and 8% tax is $216.

To calculate the sale price of the bracelet with a 25% discount and 7% tax, we can follow these steps:

Calculate the amount of the discount by multiplying the regular price by 25% (or 0.25): 44 x 0.25 = 11

Subtract the discount amount from the regular price to get the sale price: 44 - 11 = $33

Calculate the tax amount by multiplying the sale price by 7% (or 0.07): 33 x 0.07 = 2.31

Add the tax amount to the sale price to get the total price: 33 + 2.31 = $35.31

Therefore, the sale price of the bracelet with a 25% discount and 7% tax is $35.31.

The scale applied to the replica model made by the carpenter is 1:12. This means that 1 inch on the replica model is equal to 12 inches on the full-size table.

What is a replica model?

A replica model in mathematics is a type of modelling technique used to analyse the behaviour of complex systems. It is useful for studying dynamic systems, such as those in physics, engineering, economics, and biology, since it allows for a more accurate analysis of how the system may respond to different inputs.

The scale of the replica model made by the carpenter can be determined by using the ratio of the size of the replica model compared to the size of the full-size table. The ratio of the length of the replica model to the full-size table is 3 inches to 37.5 inches. This can be expressed as a scale by dividing the size of the replica model by the size of the full-size table.

In this example, 3 inches divided by 37.5 inches is equal to 0.08. This means that the scale of the replica model is 1:12, meaning 1 inch on the model is equal to 12 inches on the full-size table. This means that the carpenter used a 1:12 scale when making the replica model of the table.

In conclusion, the scale applied to the replica model made by the carpenter is 1:12. This means that 1 inch on the replica model is equal to 12 inches on the full-size table. This ratio can be determined by taking the ratio of the size of the replica model compared to the size of the full-size table.

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Answer:

Kayla is farther along in the book after 4 days, since she is on page 58 while Bilquis is on page 51.

Step-by-step explanation:

[tex]\textit{area of a rectangle}\\\\ A=Lw ~~ \begin{cases} L=length\\ w=width\\[-0.5em] \hrulefill\\ w=5\\ A=35 \end{cases}\implies 35=L(5)\implies \cfrac{35}{5}=L\implies 7=L[/tex]

Answer: C

Step-by-step explanation:

Every x value can only have one specific y value. You will have to perform the vertical line test. Basically grab a ruler and  slide it across your graphs vertically ( drag the ruler upright from left to right). Look at your x intercepts and their specific y intercepts.

For A, it continously crosses over so it is not a function. For B, it is always crossing over 2 times so it is not a function. For C, every x intercept has a specific y value therefore it is a function. It crosses over at one point only. For D, the vertical is always crossing over 2 times therefore it will not be a function.

Answer:

C.

Step-by-step explanation:

If a vertical line is moved across the graph and, at any time, touches the graph at only one point, then the graph is a function. If the vertical line touches the graph at more than one point, then the graph is not a function.

The vertical parabola is the only graph here that will only touch the graph at one point, so it is the only function.

To answer this question, we need to calculate the population of both towns for each year and compare them.

For Town A:

1980 population = 1200

1981 population = 1200 + 300 = 1500

1982 population = 1500 + 300 = 1800

1983 population = 1800 + 300 = 2100

and so on

For Town B:

1980 population = 500

1981 population = 500 + 0.12(500) = 560

1982 population = 560 + 0.12(560) = 627.2

1983 population = 627.2 + 0.12(627.2) = 702.464

and so on

To determine which town will eventually have the greater population, we can calculate the limit of each population as time goes to infinity. For Town A, the population limit is infinity because the population keeps increasing by 300 every year. For Town B, the population limit is also infinity because the population grows exponentially due to the 12% increase each year. However, we can still compare their growth rates.

For Town A, the annual growth rate is constant at 300 people per year, whereas for Town B, the growth rate is decreasing over time due to the compounding effect of the percentage increase.

Therefore, initially, Town A has a smaller population than Town B. However, over time, Town A's growth rate remains constant while Town B's growth rate slows down. Eventually, Town A will surpass Town B in population.

To determine which town had a greater population in 2005, we need to calculate the population of each town in 2005 using the growth rates we calculated above.

For Town A:

1980 population = 1200

2005 population = 1200 + 300(25) = 8700

For Town B:

1980 population = 500

2005 population = 500(1.12)^25 = 4544.73

Therefore, in 2005, Town A had a greater population than Town B.

An exponential function is a function in which the independent variable x appears as an exponent.

a is the y-intercept.

b is the rate of change.

The function is exponential growth when b > 1.

The function is exponential growth when b < 1.

y-intercept is the initial value of the function when x is equal to 0.

Asymptote is the line that the function approaches but does not cross.

In Mathematics, an exponential function can be modeled by using this mathematical expression:

f(x) = ab^x

Where:

In Mathematics, an asymptote can be defined as a line which the graph of a given function approaches but would never touch or cross.

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Answer:

hollow circle at 7, with an arrow extending to the left

Step-by-step explanation:

Answer:

At a recent baseball game of 5,000 in attendance, 150 people were asked what they prefer on a hot dog. The results are shown.

Ketchup Mustard Chili

63 27 60

Based on the data in this sample, how many of the people in attendance would prefer chili on a hot dog?

900

2,000

2,100

4,000

Step-by-step explanation:

The function value of g[f(-1)] when f(x) = 2x² + 4x and g(x)=-3x-1 is 5.

In mathematics, a function is a rule that assigns each element from a set (called the domain) to a unique element from another set (called the range or codomain). It is a way of describing the relationship between two sets of numbers. The input values of a function are called the independent variable or argument, and the output values are called the dependent variable. The most common way to represent a function is by using an equation.

Here,

To evaluate g[f(-1)], we need to first find f(-1), then use that value as the input to the function g.

We have:

f(x) = 2x² + 4x

So, to find f(-1), we substitute -1 for x:

f(-1) = 2(-1)² + 4(-1)

= 2 - 4

= -2

Now that we have f(-1) = -2, we can evaluate g[f(-1)] by substituting -2 for x in the function g:

g[f(-1)] = g[-2]

= -3(-2) - 1

= 5

Therefore, g[f(-1)] = 5.

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Answer:

B. X

Step-by-step explanation:

the essential rule for a function is that each value of x must have exactly one associated y value.

in other words, if we "feed" the x- value to the function it must be clear what y-value we get as result.

in W 6 has 2 associated y values. no function.

in X all is OK. yes, a function.

in Y again, 6 has 2 associated y values. no function.

in Z 7 has 2 associated y values. no function.

Answer:

Step-by-step explanation:

To solve for x in the equation x^2 - 16 = 0, we can use the difference of squares formula:x^2 - 16 = (x + 4)(x - 4) = 0

Now we can set each factor equal to zero and solve for x:x + 4 = 0 or x - 4 = 0x = -4 or x = 4
Therefore, the solutions to the equation x^2 - 16 = 0 are x = -4 and x = 4.

Answer: The sales manager, with weekly earnings of $1006.25.

Step-by-step explanation:

To determine who would make the most money in one week, we need to calculate the weekly earnings for each of the four positions.

Let's start with the sales manager, who works 35 hours at a rate of $28.75 per hour:

Weekly earnings for sales manager = 35 hours x $28.75 per hour = $1006.25

Next, let's consider the head mechanic, who works 25 hours. We'll need to know their hourly rate in order to calculate their weekly earnings:

Hourly rate for head mechanic = $35 per hour

Weekly earnings for head mechanic = 25 hours x $35 per hour = $875

Now, let's move on to the assistant mechanic, who works 30 hours:

Hourly rate for assistant mechanic = $20 per hour

Weekly earnings for assistant mechanic = 30 hours x $20 per hour = $600

Finally, let's consider the front desk clerk, who works 40 hours:

Hourly rate for front desk clerk = $15 per hour

Weekly earnings for front desk clerk = 40 hours x $15 per hour = $600

Therefore, the sales manager would make the most money in one week with weekly earnings of $1006.25.

Answer: Sales Manager

Step-by-step explanation:

Let's calculate the total pay for each worker:
Sales manager: $28.75 per hour x 35 hours = $1,006.25

Head mechanic: $32.50 per hour x 25 hours = $812.50
Assistant mechanic: $25.00 per hour x 30 hours = $750.00
Front desk clerk: $20.00 per hour x 40 hours = $800.00

Answer:

When we raise a power to another power, we multiply the exponents. So:

(6^7)^8 = 6^(7*8) = 6^56

Therefore, (6^7)^8 can be written in the form 6^56, where k=56.

Step-by-step explanation:

Answer:

Step-by-step explanation:

Assuming you can follow how the equation was solved for y, the 2 comes from the "±" in front of the square root. That means that there is a positive and a negative result when you plug in a number for x. For example, if we were asked to solve

[tex]x^2=4[/tex]

we would take the square root of both sides, giving us

x = ±2

This is because a positive 2 squared gives us a positive 4, and a negative 2 squared also gives us a positive 4. There will ALWAYS be 2 solutions when you take a square root of a number, both the positive (principle) and negative roots.

The new carpet will cοst $1,908.00.

The size οf a regiοn οn a surface is measured by its area. While surface area refers tο the area οf an οpen surface οr the bοundary οf a three-dimensiοnal οbject, the area οf a plane regiοn οr plane area refers tο the area οf a shape οr planar lamina.

Area can be interpreted as the quantity οf material with a particular thickness required tο create a mοdel οf the shape οr as the quantity οf paint required tο cοmpletely cοver a surface in a single cοat. It is the twο-dimensiοnal equivalent οf the vοlume οf a sοlid οr the length οf a curve (a οne-dimensiοnal cοncept) (a three-dimensiοnal cοncept).

The area οf the classrοοm is the square οf the length οf its side, which is:

6 yards × 6 yards = 36 square yardsTο find the cοst οf the new carpet, we need tο multiply the area οf the classrοοm by the cοst per square yard:

36 square yards × $53.00/square yard = $1,908.00

Therefοre, the new carpet will cοst $1,908.00.

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Part 1 - Circumcenter: The point where all three sides of the triangle meet and intersect, also the center of the circle that passes through all three vertices of the triangle.

Intersect is an operation used in mathematics and computing to determine the common elements of two or more sets. It is usually written as a symbol (∩) and is used to return the set of all elements that are in both sets. For example, if A is the set of all even numbers and B is the set of all prime numbers, then A ∩ B will return the set of all prime even numbers.

- Orthocenter: The point where the three altitudes of the triangle intersect.
- Centroid: The point where the three medians of the triangle intersect.

Part 3: The three centers of the triangle (circumcenter, orthocenter, and centroid) can all be constructed using a straightedge and compass. The circumcenter is located at the intersection of the three sides, the orthocenter is located at the intersection of the three altitudes, and the centroid is located at the intersection of the three medians. From this, we can make the hypothesis that these three centers of a triangle are related in that they are all located at the intersection of two or more lines that form the triangle.

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6.3. This would be a plot of speed instruction against accuracy instruction as it is shown in the attachment.

6.4) C. . Do not duplicate date in both a figure and table. is consistent with APA style for figures and tables

6.5) D. The section of the APA that the tables and figures are shown is the results

APA style guidelines recommend avoiding duplicating data between figures and tables. Instead, each should complement the other and provide additional information.

Regarding the other options, figures and tables should be embedded within the Results section or the Appendix section, and each figure/table should have its own title that accurately describes its content.

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For similar triangle the angle does not change, thus the angle M is 33 degrees.

Triangles that are similar in shape but differ in size are known as similar triangles. Squares with any side length and all equilateral triangles are examples of related objects. In other words, if two triangles are similar, their corresponding sides are proportionately equal and their corresponding angles are congruent.

Both have the same form, although they might be different sizes. All related angle pairs are equal, and corresponding sides have the same ratio.

We can observe that the two triangles are similar.

For similar triangle the angle does not change, thus the angle M is 33 degrees.

Hence, the measure of angle M is 33 degrees.

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Angle M is 147 degrees.

A triangle is a geometric shape that consists of three line segments connected end-to-end to form a closed shape. These line segments are called sides, and the points where the sides meet are called vertices. The sum of the three interior angles of a triangle is always 180 degrees, and the length of each side must be less than the sum of the other two sides. Triangles can be classified based on the length of their sides and the size of their angles. For example, a triangle with all three sides of equal length is called an equilateral triangle, while a triangle with two sides of equal length is called an isosceles triangle. Triangles are used in many areas of mathematics, as well as in physics, engineering, and other sciences, to model and solve problems.

Since triangles XYZ and LMN are congruent, corresponding angles are congruent. Therefore, angle LMN = angle XYZ = 33 degrees.

To find angle NML, we use the fact that the sum of the angles in a triangle is 180 degrees. We have:

angle LNM + angle NML + angle MLN = 180 degrees

Substituting the given values, we get:

124 + angle NML + 33 = 180

Simplifying and solving for angle NML, we get:

angle NML = 180 - 124 - 33 = 23 degrees

Therefore, angle M is the exterior angle of triangle LMN at vertex N, which is equal to the sum of the remote interior angles. We have:

angle M = angle LNM + angle NML = 124 + 23 = 147 degrees

Therefore, angle M is 147 degrees

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To evaluate the function graphically, we need to plot the two lines on graph and see where they intersect.Then find the value of f(x) at that point.Therefore, f(4) = -4, which matches with the graphical evaluation.

A function is a mathematical rule that maps every input from a set (the domain) to a unique output from another set (the range), where each input has only one corresponding output.

The two lines intersect at the point (2,-4). Therefore, the value of f(x) at x=4 is -4.

To find f(4), we can use the equation of line 1, which is:

y - (-8) = (2 - (-8))/(1 - (-5)) × (x - (-5))

Simplifying, we get:

y + 8 = (10/6) × (x + 5)

y + 8 = (5/3) × (x + 5)

y = (5/3) × x - 19/3

Substituting x=4, we get:

y = (5/3) × 4 - 19/3

y = -4

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These expression shows Carly picked 20 mangοes

a. (m+4)/2

b. (2m+2)/3

c. (m+4)/2 - (2m+2)/3 = 3

d. Carly picked 20 mangοes.

An algebraic equatiοn is a mathematical statement that uses variables and mathematical οperatiοns such as additiοn, subtractiοn, multiplicatiοn, and divisiοn tο express the equality οf twο algebraic expressiοns.

The gοal οf sοlving an algebraic equatiοn is tο determine the values οf the variables that satisfy the equatiοn.

a) The number οf mangοes in each grοup that Carly shared equally οn Mοnday can be represented by the expressiοn: (m+4)/2

b) The number οf mangοes in each grοup that Carly shared equally οn Tuesday can be represented by the expressiοn: (2m+2)/3

c) If Carly subtracted the number οf mangοes in each grοup οn Tuesday frοm the number οf mangοes in each grοup οn Mοnday and gοt 3 mangοes left, the equatiοn representing this infοrmatiοn is:

(m+4)/2 - (2m+2)/3 = 3

d) Sοlving the equatiοn frοm part c) fοr m, we get:

9m + 6 - 4(2m + 2) = 18

9m + 6 - 8m - 8 = 18

m = 20

Therefοre, Carly picked 20 mangοes.

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Answer:

sorry i am very sorry

Step-by-step explanation:

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Answer:

y = 1/3x +2

Step-by-step explanation:

The slope intercept form of the equation of a line is

y = mx+b  

where m is the slope and b is the y intercept.

y = 1/3x +2

Answer:

y = 1/3x + 2

Step-by-step explanation:

The equation for slope intercept form of a line is:

y = mx + c

Here,

m = slope

c = y intercept

Given that,

m = 1/3

c = 2

So, to find equation of the line, replace m and c with the given values.

y = mx + c

y = 1/3x + 2

a. Trigοnοmetric expressiοns 2cοs²(π/8) - 1 is evaluated as √2/2.

b. Trigοnοmetric expressiοns 2tan(11π/12)/(1 - tan²(11π/12)) is evaluated as 1/2.

An expressiοn is cοmbinatiοn οf symbοls  οn numbers that represent quantity οr value. It  cοntain variables, cοnstants, arithmetic οperatiοns, and functiοns. An expressiοn can  be simple οr cοmplex, and it can be written in different fοrms depending οn cοntext and purpοse

a. Tο evaluate 2cοs²(π/8) - 1, we can use the dοuble angle identity fοr cοsine:

cοs(2θ) = 2cοs²(θ) - 1

Where θ = π/8

cοs(2(π/8)) = 2cοs²(π/8) - 1

cοs(π/4) = 2cοs²(π/8) - 1

√2/2 = 2cοs²(π/8) - 1

2cοs²(π/8) = √2/2 + 1

2cοs²(π/8) - 1 = (√2/2 + 1) - 1 = √2/2

Therefοre, 2cοs²(π/8) - 1 = √2/2.

b. We can use the trigοnοmetric identity:

1 + tan²θ = sec²θ

tο rewrite the denοminatοr οf the expressiοn as:

1 - tan²(11π/12) = 1/(1 + tan²(11π/12)) = 1/sec²(11π/12) = sec²(-π/12)

where we have used the fact that secant is an even functiοn, sο sec(-x) = sec(x).

Next, we can use the fοllοwing trigοnοmetric identities:

tan(-x) = -tan(x)

and

sec(-x) = sec(x)

tο rewrite the numeratοr οf the expressiοn as:

2tan(11π/12) = -2tan(-π/12) = -2(-tan(π/12))

Finally, substituting these expressiοns intο the οriginal expressiοn, we get:

2tan(11π/12)/(1 - tan²(11π/12)) = -2(-tan(π/12))/sec²(-π/12)

= 2tan(π/12)cοs²(π/12)

= 2sin(π/12)cοs(π/12)

= sin(π/6)

= 1/2

Therefοre, the value οf the expressiοn is 1/2.

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According to the given information, the ratio P:O:R is 2√3 : 1 : 2 in its simplest form.

A ratio is an ordered pair of numbers a and b, written a / b where b does not equal 0. A proportion is an equation in which two ratios are set equal to each other. For example, if there is 1 boy and 3 girls you could write the ratio as 1 : 3 (for every one boy there are 3 girls).

Since p:q:r = √3:1:1, we can write:

p = √3x

q = x

r = x

where x is a common factor.

We can see that triangle ABC is a 30-60-90 triangle with angle A = 60 degrees, and that angle BOC is a right angle. Therefore, we can use the ratios of sides in a 30-60-90 triangle to find the values of P, O, and R:

P = AB = p = √3x

O = BC/2 = q/2 = x/2

R = AC = r = x

Therefore, the ratio P:O:R is:

P:O:R = √3x : x/2 : x

We can simplify this ratio by multiplying all terms by 2 to get rid of the fraction:

2√3x : x : 2x

We can further simplify by dividing all terms by x:

2√3 : 1 : 2

Therefore, according to the given information, the ratio P:O:R is 2√3 : 1 : 2 in its simplest form.

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Hence, in response to the provided question, we can say that 2-2 = 0 is not a polynomial expression and S is not a polynomial expression

A polynomial is a mathematical statement made up of parameters and uncertainty that exclusively uses additions, substitutions, multiplications, and nonzero powers of variables. A single uncertain x polynomial is denoted by the expression x2 4x + 7. An formula in mathematics characterized as both a polynomial is constituted of variable (formerly known as different flavored) and coefficients which may be added, deleted, multiplied, and increased to negative integer factors of semi. A polynomial is an algebraic statement having variables and coefficients. Just the operations addition, reduction, multiply, and non-negative integer multipliers are permitted in an expression. These formulas are known as polynomials.

6x³+11x²-5x-12 = (2x-3)(3x+4)(x+1)

3x+4 = 3x+4

2x² + x - 8 = (2x-4)(x+2)

6x +7x³-9x²+13x-12 = 7x³-9x²+(6+13)x-12 = 7x³-9x²+19x-12

3x²-x+3 = 3x²-3x+4x+3 = 3x(x-1)+3(x-1) = (3x+3)(x-1)

2x² + 3x - 4 = (2x-1)(x+4)

2x²+x-3 = (2x-1)(x-3)

2-2 = 0

S = S (not a polynomial expression)

So, the matches are:

6x³+11x²-5x-12 = (2x-3)(3x+4)(x+1)

3x+4 = 3x+4

2x² + x - 8 = (2x-4)(x+2)

6x +7x³-9x²+13x-12 = 7x³-9x²+19x-12

3x²-x+3 = (3x+3)(x-1)

2x² + 3x - 4 = (2x-1)(x+4)

2x²+x-3 = (2x-1)(x-3)

2-2 = 0 is not a polynomial expression

S is not a polynomial expression

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The value of the equation of the ellipse is (x + 1)² + (y + 1)² = 9, the center of the ellipse is at (-1, -1), thus graph B is correct.

E = c/a, where c is the distance from the ellipse's centre to either focus and an is the distance from the ellipse's centre to either end of the main axis, is the formula for an ellipse's eccentricity.

The distance between the foci is 2a = 6, where an is the separation between any focus and the elliptic centre.

The middle of the ellipse is at the midway of the foci since they are both on the same horizontal line, which is (-1, -1).

The main axis measures 18 inches, or 2b, where b is the distance between the ellipse's center and either end of the major axis.

Inputting the values we are familiar with yields:

b² + (c = 3)² = a²

b² + 9 = 9

b^2 = 0

So b = 0, which means the ellipse is a circle with radius a = 3 centered at (-1, -1). The equation for a circle with center (h, k) and radius r is:

(x - h)² + (y - k)² = r²

Substituting the values we know, we get:

(x + 1)² + (y + 1)² = 9

Hence, the value of the equation of the ellipse is (x + 1)² + (y + 1)² = 9, the center of the ellipse is at (-1, -1), thus graph B is correct.

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Ending Balance: $14,450

Cash typically refers to physical currency and coins that are used as a medium of exchange for goods and services. It includes banknotes and coins that are issued by a government or central bank and are accepted as legal tender within a country.

Given by the question.

Certainly, here is an example of a monthly cash budget:

Monthly Cash Budget:

Starting Balance: $10,000

Income:

Expenses:

Notes:

Starting Balance refers to the amount of cash you have at the beginning of the month.

Income includes all sources of cash inflow.

Expenses includes all sources of cash outflow.

Net Cash Flow is the difference between Total Income and Total Expenses. If it is positive, you have a surplus. If it is negative, you have a deficit.

Ending Balance is the amount of cash you have at the end of the month after all income and expenses have been accounted for.

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Answer:

27.7°

Step-by-step explanation:

Total angles in any triangle= 180°

Let the missing angle be x°.

Thus,

x°+90°+62.3°=180

x= 180-152.3

x = 27.7°

Hope this helps! :)