Response to the given question would be that Hence, the surface area rectangular box has a surface area of 592 square cm.
what is surface area ?Surface area is a measure of how much space an object's surface takes up overall. The total area of a three-dimensional shape's surroundings is its surface area. Surface area refers to the total surface area of a three-dimensional form. You may compute the surface area of a cuboid with six rectangular sides by adding together their individual areas. Instead, you may use the following formula to name the box's dimensions: Surface (SA) = 2lh plus 2lw plus 2hw. A three-dimensional shape's surface area is calculated as the total amount of space it occupies (a three-dimensional shape is a shape that has height, width, and depth).
Size (l) equals 10 cm
Height (h) = 8 cm
Size (h) equals 12 cm
We may use the following formula to get the box's surface area:
Surface Area = 2(lh, lw, and wh)
Inputting the values provided yields:
Surface Area equals 2 (10 x 8, 10 x 12, and 8 x 12) square centimetres.
Surface Area is equal to 2 (80, 120, and 96 square cm).
Surface Area: 2(296) square centimetres
592 square cm is the surface area.
Hence, the rectangular box has a surface area of 592 square cm.
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Solve the equation √ y+6=4 and verify the solution. State any restrictions, if they exist.
The restrictions for this equation are that y must be greater than or equal to 0, since the square root of a negative number is not a real number. So, the restrictions for this equation are y ≥ 0.
To solve the equation √y + 6 = 4, we first need to isolate the square root on one side of the equation. We can do this by subtracting 6 from both sides of the equation:
√y = 4 - 6
√y = -2
Now, we need to square both sides of the equation to get rid of the square root:
y = (-2)^2
y = 4
So, the solution to the equation is y = 4. However, we need to verify this solution by plugging it back into the original equation:
√(4) + 6 = 4
2 + 6 = 4
8 = 4
This is not true, so there are no solutions to the equation.
The restrictions for this equation are that y must be greater than or equal to 0, since the square root of a negative number is not a real number. So, the restrictions for this equation are y ≥ 0.
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uestion 3 of 19, Step 1 of 1 (1)/(19) Correct etermine whether the following statement is true or false. If it is false, rewrite it in a form that is a true statement. (3)/(2)>(4)/(5)
The statement (3)/(2)>(4)/(5) is true because cross-multiplication shows that 15>8.
To determine whether a statement is true or false, we can cross-multiply the fractions and compare the products.
In this case, (3)*(5)>(2)*(4), which simplifies to 15>8. Since 15 is greater than 8, the statement is true and does not need to be rewritten.
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Factorising a quastatic Perfect iectargler fiea of rectangle Area of iedangle 11= Aica of rectangle 111= Area of 1V= Area of 1+11+1v
If you have a rectangle with a length of 5 and a width of 3, the area would be 5 * 3 = 15.
To factorise a quadratic equation, you need to find two numbers that multiply to give the constant term and add to give the coefficient of the x term.
For example, if you have the equation x^2 + 5x + 6 = 0, the two numbers you need to find are 2 and 3, because 2 * 3 = 6 and 2 + 3 = 5. So the equation can be factorised as (x + 2)(x + 3) = 0.
In terms of finding the area of a rectangle, you need to multiply the length and the width. So if you have a rectangle with a length of 5 and a width of 3, the area would be 5 * 3 = 15.
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In a basket 5/6 of the fruits are apples. 4/5 of the apples are red apples. What fraction of the fruits in the basket red apples? Give the answer in simplest form
Answer:
2/3 of the fruits in the basket are red apples.
Step-by-step explanation:
5 apples of 6 total fruit are in a basket.
4 apples are red.
Take 4 and divide it by 6, you will get 0.67 or 2/3.
2/3 cannot be simplified.
A company's profit increased linearly from $5 million at the end of year 2 to $17 million at the end of year 6.
(a) Use the two (year, profit) data points (2, 5) and (6, 17) to find the linear relationship y = mx + b between x = year and y = profit.
(b) Find the company's profit at the end of 3 years.
(c) Predict the company's profit at the end of 8 years.
Below, you will learn how to solve the problem.
(a) To find the linear relationship y = mx + b between x = year and y = profit, we first need to find the slope (m) and the y-intercept (b).
The slope (m) is the change in y (profit) divided by the change in x (year):
m = (17 - 5)/(6 - 2)
m = 12/4
m = 3
Next, we can use one of the data points (2, 5) and the slope (3) to find the y-intercept (b):
5 = 3(2) + b
b = 5 - 6
b = -1
So the linear relationship between x = year and y = profit is:
y = 3x - 1
(b) To find the company's profit at the end of 3 years, we can plug in x = 3 into the equation:
y = 3(3) - 1
y = 8
So the company's profit at the end of 3 years is $8 million.
(c) To predict the company's profit at the end of 8 years, we can plug in x = 8 into the equation:
y = 3(8) - 1 = 23
So the company's profit at the end of 8 years is predicted to be $23 million.
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Can y’all please help with part an and part b? I need justification on how you got the answer pleaseee
Answer:
Part A
Option C
Part B
Option A
Step-by-step explanation:
Part A
The equation for revenue gained for x tickets sold by Alpacas team
is y = 7.5x
This indicates the slope is 7.5 which means for every ticket sold the revenue increases by $7.50
Or in other words, cost of each ticket = $7.50
The revenue - ticket relationship for the Stingrays is given in the form of a graph with a linear equation
The slope of the graph can be found by rise/run where rise
= difference in y values for 2 points on the graph and run
= difference in the corresponding x values
Let's take points (0, 0) and (100, 1500) to find the slope
rise = (1500 - 0)/(10-0) = 1500/10 = 150
run = 10 - 0 = 10
Slope = 150/10 = 15
Equation is y = 15x
So for every ticket sold, the revenue increases by $15
Or in other words, cost of each ticket = $15
Therefore each Stingrays ticket costs 15/7.5 = 2 times each Alpacas ticket
Correct Answer:
Option C
---------------------------------------------------------------------------------------------------------
Part B
For the Geckos swim team we can see that as the number of tickets increases from 6 to 18(difference of 18- 6 = 12), the revenue increases by 180 - 60 = $120
Cost for ticket between 6 and 18 tickets = $120/12 = $10
When tickets sold increases from 18 to 54 (difference of 54 - 18= 36), the revenue increases by $540 - $180 = $360
Therefore the price for each ticket within this range = $360/36 = $10
So the price per ticket is the same regardless of the number of tickets sold
Therefore Gecko's revenue can be modeled as y = 10x
Alpacas charge $7.50 per ticket and Gecko's charge $10 per ticket
So the difference between a Gecko's ticket and an Alpacas ticket
= $10 - $7.50
= $2.50 more than Alpacas
or, alternatively
Alpacas charge $2.50 less than Gecko per ticket
Correct Answer
Option A
what is the line into the slope-intercept from of 5y-6x=5
[tex]y=\frac{6}{5} x+1[/tex]
Step-by-step explanation:Slope-intercept form is a common way to express a linear function.
Solving For Slope-Intercept
In the question, we are given standard form. In order to find slope-intercept, we need to solve for y. This means we need to use the properties of equality to isolate y from the other values.
First, add 6x to both sides.
5y = 6x + 5Then, divide both sides by 6.
[tex]y=\frac{6}{5} x+1[/tex]This gives us the final slope-intercept form of the given equation.
Interpreting the Equation
Slope-intercept form is written in the format of y = mx + b. In this equation, m is the slope and b is the y-intercept. Our equation is [tex]y=\frac{6}{5} x+1[/tex]. So, 6/5 is the slope. This means that the rate of change of the graph is 6 units per 5 units. Additionally, the y-intercept is 1. So, the graph crosses the y-axis at y = 1.
When comparing the means of two populations, it is important
that the two samples be drawn randomly and independently from both
populations. True or False ?
The samples randomly and independently.
True. When comparing the means of two populations, it is important that the two samples be drawn randomly and independently from both populations. This ensures that the samples are representative of the populations and that the results are not biased. By drawing the samples randomly and independently, we can ensure that the comparison of the means is accurate and reflects the true differences between the populations.
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Help!!!!
Mr. Hamstra’s car holds 14 2/5 gallons of gas and averages 20 miles per gallon. About how far can Mr. Hamstra travel when his tank is 1/4 full?
By answering the above question, we may infer that Hence, when equation Mr. Haustra's tank is just 1/4 full, he can go around 70 miles.
What is equation?A mathematical equation links two statements and utilises the equals sign (=) to indicate equality. In algebra, an equation is a mathematical assertion that proves the equality of two mathematical expressions. For instance, in the equation 3x + 5 = 14, the equal sign separates the numbers by a gap. A mathematical formula may be used to determine how the two sentences on either side of a letter relate to one another. The logo and the particular piece of software are usually identical. like, for instance, 2x - 4 = 2.
There are the following if Mr. Hamstra's automobile contains 14 2/5 gallons of fuel and his tank is only 1/4 full:
There are 3 1/2 gallons of gas in the tank (1/4) x 14 2/5.
If the automobile gets 20 miles per gallon on average, it may go as far as:
3 1/2 gallons x 20 miles per gallon is 70 miles.
Hence, when Mr. Hamstra's tank is just 1/4 full, he can go around 70 miles.
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Chapter Exercise 10-77
Rates of return (annualized) in two investment portfolios are compared over the last 12 quarters. They are considered similar in safety, but portfolio B is advertised as being "less volatile." (a) At α = .025, does the sample show that portfolio A has significantly greater variance in rates of return than portfolio B? (b) At α = .025, is there a significant difference in the means?
Portfolio A
Portfolio B
5.23
8.96
10.91
8.60
12.49
7.61
4.17
6.60
5.54
7.77
8.68
7.06
7.89
7.68
9.82
7.62
9.62
8.71
4.93
8.97
11.66
7.71
11.49
9.91
(a-1) Choose the appropriate hypotheses. Assume σA2 is the variance of the Portfolio A and σB2 is the variance of the Portfolio B.
multiple choice 1
H0: σA2/σB2 ≤ 1 versus H1: σA2/σB2 > 1 Correct
H0: σA2/σB2 = 1 versus H1: σA2/σB2 ≠ 1
H0: σA2/σB2 ≥ 1 versus H1: σA2/σB2 < 1
(a) Yes, At α = .025, the sample show that portfolio A has significantly greater variance in rates of return than portfolio B. The correct hypotheses for this problem are H0: σA2/σB2 ≤ 1 versus H1: σA2/σB2 > 1.
The appropriate hypotheses are H0: σA2/σB2 ≤ 1 versus H1: σA2/σB2 > 1. This is because we are testing if portfolio A has significantly greater variance in rates of return than portfolio B.
If the null hypothesis is true, then the ratio of the variances will be less than or equal to 1, meaning that portfolio A does not have greater variance than portfolio B. If the alternative hypothesis is true, then the ratio of the variances will be greater than 1, meaning that portfolio A does have greater variance than portfolio B.
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prove the following:
1. the altitudes of a triangle are the angle bisectors of the orthic triangle
2. the circle whose diameter is the side of the triangle passes through the opposite vertices of the orthic triangle
The altitudes of a triangle are the angle bisectors of the orthic triangle is true because the orthic triangle is formed by the feet of the altitudes of the original triangle. The circle whose diameter is the side of the triangle passes through the opposite vertices of the orthic triangle is true because circumcircle of a triangle passes through all three vertices.
To prove the first statement, we can use the fact that the altitudes of a triangle are perpendicular to the sides and intersect at the orthocenter. The orthic triangle is formed by the feet of the altitudes of the original triangle.
1. Let ABC be the original triangle and D, E, F be the feet of the altitudes from A, B, and C, respectively.
2. Since AD is an altitude, ∠ADB and ∠ADC are right angles.
3. Similarly, ∠BEC and ∠BFC are right angles.
4. Therefore, ∠BDC and ∠EDF are supplementary angles, meaning they add up to 180 degrees.
5. Since ∠BDC and ∠EDF are supplementary and they share a common side, they are also the angle bisectors of the orthic triangle DEF.
6. The same logic can be applied to the other two altitudes to show that they are also angle bisectors of the orthic triangle.
To prove the second statement, we can use the fact that the circumcircle of a triangle passes through all three vertices.
1. Let ABC be the original triangle and D, E, F be the feet of the altitudes from A, B, and C, respectively.
2. Let O be the circumcenter of the original triangle ABC.
3. Since the circumcircle passes through all three vertices, OD, OE, and OF are all radii of the circle.
4. Since all radii of a circle are equal, OD = OE = OF.
5. Therefore, the circle whose diameter is the side of the triangle passes through the opposite vertices of the orthic triangle, as they are all equidistant from the center of the circle.
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I neeeeedddd helppppp
Answer:
∠A + ∠B + ∠C = 180° (∠sum of triangle)90°+ 4x+19°+5x-10°=180°9x=81x=9°∠A=90°∠B=55°∠C=35°In Exercises 17-27, let the universe be the setZ+. LetX={1,2,3,4,5} and let Y be the set of positive, even integers. In setbuilder notation, Y={2n∣n∈Z+}. In Exercises 18-27, give a mathematical notation for the set by listing the elements if the set is finite, by using set-builder notation if the set is infinite, or by using a predefined set such as ∅
17. Describe Yˉ in words. 18. Xˉ
19.Yˉ
20.X∩Y
21.X∪Y
22.Xˉ∩Y
23.Xˉ∪Y
24.X∩Yˉ
25.X∪Yˉ
26.Xˉ∩Yˉ
27.Xˉ∪Yˉ
17. Yˉ is the set of all positive, odd integers.
18. Xˉ is the set of all integers that are not in X, which is {6, 7, 8, 9, 10...}.
19. Yˉ is the set of all positive, odd integers, which can be expressed in set-builder notation as Yˉ = {2n + 1 | n ∈ Z+}.
20. X∩Y is the set of all elements that are in both X and Y, which is {2}.
21. X∪Y is the set of all elements that are in either X or Y, which is {1, 2, 3, 4, 5, 6, 8, 10, 12, 14, 16, 18, 20...}.
22. Xˉ∩Y is the set of all elements that are in both Xˉ and Y, which is {6, 8, 10, 12, 14, 16, 18, 20...}.
23. Xˉ∪Y is the set of all elements that are in either Xˉ or Y, which is {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20...}.
24. X∩Yˉ is the set of all elements that are in both X and Yˉ, which is ∅ (the empty set).
25. X∪Yˉ is the set of all elements that are in either X or Yˉ, which is {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20...}.
26. Xˉ∩Yˉ is the set of all elements that are in both Xˉ and Yˉ, which is {6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20...}.
27. Xˉ∪Yˉ is the set of all elements that are in either Xˉ or Yˉ, which is {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20...}.
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image attached - thank you!
Answer:
see below
Step-by-step explanation:
net worth = assets- liabilities
assets = what u have (good stuff)/own eg money
liabilities = what u owe/spending
so work backwards or put numbers in place
672 = assets- 314
672+314 = assets (ans)
At a carnival game, it cost Taylor $6 to toss 63 rings. Fill out a table of equivalent ratios and plot the points on the coordinate axes provided.
For toss 21 it is 2 dollars, for toss 41 it is 4 dollars, for toss 63 it is 6.
Describe Graph?Graphs can take many forms, depending on the type of data being represented and the purpose of the graph. Some common types of graphs include:
Bar graphs: These use bars or columns to represent numerical values or frequencies.
Line graphs: These use lines to show the relationship between two variables over time or other intervals.
Pie charts: These use slices of a circle to represent parts of a whole.
Scatterplots: These show the relationship between two variables by plotting individual data points.
Graphs can be used to identify patterns, trends, and relationships in data, and to make predictions and draw conclusions based on that data. They are commonly used in fields such as statistics, economics, engineering, and science to help visualize and analyze complex data sets.
TOSS DOLLARS
21 2
42 4
63 6
Plotting the points on the coordinate axes, we have:
|
7 -
|
6 -
|
5 -
|
4 - • (21,2)
| \
3 - • (42,4)
| \
2 - • (63,6)
|________________________________
0 20 40 60 80 100
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HELPPPP MEEEE I NEED TO TURN IN THIS LATE MATH HOMEWORK
Answer:
(2, 1) is the point where the two lines intersect.
To prove it I'll use substitution
The equations are:
y = 2x - 3 and y = -3x + 7
I'll plug in 2x - 3 for y in y = -3x + 7 so...
2x - 3 = -3x + 7
Simplify:
5x = 10
x = 2
Now I'll plug 2 for x in y = 2x - 3
y = 2(2) - 3
y = 4 - 3
y = 1
So the ordered pair/solution is (2, 1)
Hope that explains it!
Can someone answer this for me
3. For a matrixAof sizem×n, explain why the following statements are logically equivalent: (a) For eachb∈Rm, the matrix equationAx=bhas a solution. (b) Eachb∈Rmis a linear combination of the columns inA(c) The columns ofAspanRm(d) The reduced echelon form ofAhas a pivot in every row.
All four statements are logically equivalent.
The statements (a), (b), (c), and (d) are all logically equivalent because they all describe the same concept: that the matrix A has a solution for every possible vector b.
Let's start with statement (a): For each b∈Rm, the matrix equation Ax=b has a solution. This means that for any vector b in Rm, there exists a vector x in Rn such that Ax=b.
Now, let's look at statement (b): Each b∈Rm is a linear combination of the columns in A. This means that for any vector b in Rm, we can write b as a linear combination of the columns of A, which is equivalent to saying that Ax=b has a solution.
Statement (c) says that the columns of A span Rm. This means that the columns of A can be combined in a linear combination to produce any vector in Rm, which is equivalent to saying that Ax=b has a solution for any vector b in Rm.
Finally, statement (d) says that the reduced echelon form of A has a pivot in every row. This means that the matrix A is of full rank and that there are no free variables in the equation Ax=b. This implies that there is a unique solution for every vector b in Rm, which is equivalent to saying that Ax=b has a solution for any vector b in Rm.
Therefore, all four statements are logically equivalent because they all describe the same concept: that the matrix A has a solution for every possible vector b.
The solution to this question is to understand that all four statements are logically equivalent because they all describe the same concept: that the matrix A has a solution for every possible vector b.
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DIC DEEPER Your friend earns 7(1)/(2) dollars each hour. Will she earn enough money to buy a $59 pair of headphones after working 4(3)/(4) hours? If not, how much more money does she need?
No, she will not earn enough money to buy the $59 pair of headphones after working 4(3)/(4) hours. She needs $23.375 more.
To find out how much money she will earn after working 4(3)/(4) hours, we can multiply her hourly wage by the number of hours she works:
7(1)/(2) dollars/hour × 4(3)/(4) hours
Transform the mixed fractions into improper fractions, then multiply.
15/2 dollars/hr x 19/4 hours = 285/8 = 35.625 dollars
So, she will earn $35.625 after working for 4(3)/(4) hours.
To find out how much more money she needs to buy the $59 pair of headphones, we can subtract the amount she earned from the cost of the headphones:
$59 - $35.625 = $23.375
So, she needs $23.375 more to buy the $59 pair of headphones.
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HELP ASAP !
Write the equation of:
Translate (x,y) 4 units left and 5 units down.
Think about which ones moves left-right and which one moves up-down.
Answer: (x - 4, y - 5)
Step-by-step explanation: (x, y) --> (x - 4, y - 5)
Homework:6.3 Applications of Systems of Linear Equations Question 4, 6.3.13-BE
Part 1 Jim took clothes to the cleaners three times last month. First, he brought 3 shirts and 2 pairs of slacks and paid $18.45. Then, he brought 7 shirts, 2 pairs of slacks, and 1 sports coat and paid $35.40. Finally, he brought 4 shirts and 2 sports coats and paid $23.94. How much was he charged for each shirt, each pair of slacks, and each sports coat?
Jim was charged$____ for each shirt, $____for each pair of slacks, and $____for each sports coat.
Therefore, it is not possible to determine how much Jim was charged for each shirt, each pair of slacks, and each sports coat with the given information.
To solve this problem, we can use a system of linear equations. Let x be the cost of each shirt, y be the cost of each pair of slacks, and z be the cost of each sports coat. Then we can write the following equations based on the information given in the problem:
3x + 2y = 18.45 (equation 1)
7x + 2y + z = 35.40 (equation 2)
4x + 2z = 23.94 (equation 3)
Now we can use the elimination method to solve for the variables. First, we can subtract equation 1 from equation 2 to eliminate the y variable:
4x + z = 16.95 (equation 4)
Next, we can multiply equation 1 by -2 and add it to equation 3 to eliminate the y variable:
-6x - 4y + 4x + 2z = -36.9 + 23.94
-2x + 2z = -12.96 (equation 5)
Now we can subtract equation 4 from equation 5 to eliminate the x variable:
2z - z = -12.96 - 16.95
z = -29.91
This value for z does not make sense, so there must be a mistake in the calculations or the original problem. Therefore, it is not possible to determine how much Jim was charged for each shirt, each pair of slacks, and each sports coat with the given information.
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The simple interest charged on a 4-month loan of \( \$ 12,000 \) is \( \$ 496 \). Find the simple interest rate. (Round your answer to one decimal place.) \( \% \)
The simple interest rate for this loan is 12.4%.
To find the simple interest rate, we can use the formula for simple interest, which is:
Simple Interest = Principal x Rate x Time
In this case, we are given the simple interest (\$496), the principal (\$12,000), and the time (4 months). We can plug these values into the formula and solve for the rate.
\$496 = \$12,000 x Rate x (4/12)
Simplifying the equation, we get:
\$496 = \$4,000 x Rate
Dividing both sides by \$4,000, we get:
Rate = 0.124
To convert this to a percentage and round to one decimal place, we multiply by 100 and round:
Rate = 0.124 x 100 = 12.4%
Therefore, the simple interest rate for this loan is 12.4%.
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Evaluate the algebraic expression when f = 6, g = 8, h = 12 and j = 2. A. 10 B. 12 C. 20 D. 22
The value of the given algebraic expression is 7. The solution has been obtained by using arithmetic operations.
A mathematical expression called an algebraic expression can have variables or integers in it. It cannot be solved because it lacks an equals sign. A sequence of algebraic expressions are separated by an equals sign and are part of an algebraic equation, which can be solved.
We are given an algebraic expression as (f + g)/j.
The values of f = 6, g = 8, h = 12 and j = 2.
On substituting these in the expression, we get
⇒(6 + 8)/2
⇒14/2
⇒7
Hence, the value of the given algebraic expression is 7.
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Question: Evaluate the algebraic expression (f + g)/j when f = 6, g = 8, h = 12 and j = 2.
Brenda's school is due west of her house and due south of her friend Trevor's house. The distance between the school and Trevor's house is 4 miles and the straight-line distance between Brenda's house and Trevor's house is 6 miles. How far is Brenda's house from school? If necessary, round to the nearest tenth.
In response to the supplied query, we may state that Hence, Brenda's Pythagorean theorem home is around 7.2 kilometers away from the school.
what is Pythagorean theorem?The fundamental Euclidean geometry relationship between the three sides of a right triangle is the Pythagorean Theorem, sometimes referred to as the Pythagorean Theorem. This rule states that the areas of squares with the other two sides added together equal the area of the square with the hypotenuse side. According to the Pythagorean Theorem, the square that spans the hypotenuse (the side that is opposite the right angle) of a right triangle equals the sum of the squares that span its sides. It may also be expressed using the standard algebraic notation, a2 + b2 = c2.
Points A, B, and C can be used to create a right triangle in this situation. The hypotenuse of the line segment between points A and C is its length, while the other two sides are the lengths of the segments connecting A and B and B and C.
We'll refer to the separation between positions A and C as "x". Next, we have:
[tex]x2 = 6 + 4, x2 = 36 + 16, x2 = 52, x = \sqrt(52) = 7.2.[/tex]
Hence, Brenda's home is around 7.2 kilometers away from the school.
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3. Diego works at a carwash and makes a $11 per hour. If he works 9 hours of overtime in a week, how much overtime would he earn?
Consider that overtime is paid at time-and-a-half of his regular rate.
- $158.40
-$130.00
- $150.40
-$148.50
The amount of overtime that Diego would earn would be D. $ 148. 50.
How to find the overtime ?Diego's regular rate is $11 per hour. When he works overtime, he is paid time-and-a-half of his regular rate, which means he earns an additional 50% of his regular rate for each hour of overtime.
So his overtime rate is:
= 11 + ( 11 x 0.5)
= 11 + 5.50
= $16.50 per hour
If Diego works 9 hours of overtime in a week, he would earn:
= 9 x 16.50
= $ 148. 50
In conclusion, if Diego was to work 9 hours of overtime, he would be paid $ 148. 50 for his efforts.
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3. ( 2 points) Find the value of \( a \) for which \[ v=\left[\begin{array}{c} -4 \\ a \\ -5 \\ -9 \end{array}\right] \] is in the set \[ H=\operatorname{span}\left\{\left[\begin{array}{c} 4 \\ 4 \\ 4
-4
The equation for the vector v given is: \( v=\left[\begin{array}{c} -4 \\ a \\ -5 \\ -9 \end{array}\right] \).
The set \( H \) is defined as the span of the vector \( \left[\begin{array}{c} 4 \\ 4 \\ 4\end{array}\right] \).
To find the value of a, we need to express the vector v in terms of the basis vector for H.
We can solve for a using the following equation: \( v = -4\left[\begin{array}{c} 4 \\ 4 \\ 4 \end{array}\right] + a\left[\begin{array}{c} 4 \\ 4 \\ 4 \end{array}\right] \)
Since the vector v has the same magnitude in each component, we can set the components equal:
\(-4 = a\)
Therefore, the value of a is -4.
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From point A, Stanley walks 200 m due east to point B. From B, he then walks 160 m due south to point C. Work out the length of AC. Give your answer correct to 3 significant figures
The length of AC is 224 meters to 3 significant figures.
a² + b² = c²
where c is the hypotenuse (the side opposite the right angle) and a and b are the two legs (the sides adjacent to the right angle).
In this case, we can treat Stanley's path as a right triangle with legs AB and BC, and hypotenuse AC. Since we are given the lengths of AB and BC, we can plug those into the Pythagorean theorem and solve for AC.
AC² = AB² + BC²
AC² = (200 m)² + (160 m)
AC² = 40,000 m² + 25,600 m²
AC² = 65,600 m²
To find AC, we take the square root of both sides:
AC = [tex]\sqrt{65600}[/tex] m
AC ≈ 256
Finally, we round to 3 significant figures to get length of AC ≈ 224 meters.
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ABCD is a trapezium. The height of
the trapezium is half the length of
AB. CD is twice the length of AB.
Work out the area of the trapezium
when AB is 10cm.
What is Trapezium ?
A trapezium is a convex quadrilateral with exactly one pair of opposite sides parallel to each other. The trapezium is a two-dimensional shape that appears as a table when drawn on a sheet of paper. In Euclidean Geometry, a quadrilateral is defined as a polygon with four sides and four vertices. Hence, a trapezium also has four sides, four angles and four vertices.
ABCD is a trapezium, AB || DC
The area of ABCD = 180 cm²
AB = 17 cm
CD = 13 cm
Formula Used:
Area of trapezium = 1/2 x height x (Sum of parallel sides)
Calculation:
Area of trapezium = 1/2 x height x (Sum of parallel sides)
⇒ 180 = 1/2 x height x (AB + CD)
⇒ 180 x 2 = Height x (17 +13)
Height=360/30
Height = 12
.:. The height of the trapezium is 12 cm.
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Question 1, 4.2.2 and remainder when 4x^(4)-2x^(2) is divided by x^(3)-x^(2)+1? id the remainder is
The answer is 0(zero)
The remainder when dividing 4x4 - 2x2 by x3 - x2 + 1 can be found using polynomial long division.
The calculation is shown below:
Therefore, the remainder when dividing.
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If x+y=m and xy=n, then the value of (x-y)^2 is
a. m^2-4n
b. m^2+2n
c. m^2-2n
d.m^2+n^2
The value of (x-y)² is m^2-4n.
To find the value of (x-y)², we can use the formula for the difference of squares:
(x-y)² = (x+y)² - 4xy
We are given that x+y = m and xy = n, so we can substitute these values into the formula:
(x-y)² = m² - 4n
Therefore, the value of (x-y)² is m²-4n.
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