Answer:
\( {a}^{2} + {b}^{2} = {c}^{2} \\ {a}^{2} + {9}^{2} = {17}^{2} \\ {a}^{2} = 289 - 81 \\ {a}^{2} = 208 \\ a = 14.42cm\)
a soccer field is a rectangle 90 meters wide and 120 meters long. coach asks players to run from one corner to the corner diagonally across. what is this distance?
Answer:
Step-by-step explanation:
if we have a rectangle with W=90 and L=120, and we need to find the diagonal
we will have a right triangle with the legs 90,120
diagonal is the hypothenuse
c^2=90^2+120^2=8100+14400=22500
c=sqrt22500=150
the diagonal, c=150
Robert is looking to buy a deep fryer. He has narrowed his search down to two models. The following table gives the details of the prices, cost per use in electricity and oil, and lifespan of the two models Robert is considering to purchase. Brand Brand P Brand Q Price $144. 00 $37. 50 Avg. Cost/Use $0. 49 $0. 75 Lifespan 6 years 2 years Robert plans on using his deep fryer about eight times per month. After six years, which brand will have the lower lifetime cost, and by how much? Hint: Assume that either deep fryer can be repurchased at the same price, if needed to provide the desired length of service. A. Brand P will be $118. 26 cheaper than Brand Q. B. Brand P will be $149. 76 cheaper than Brand Q. C. Brand Q will be $184. 50 cheaper than Brand P. D. Brand Q will be $31. 50 cheaper than Brand P.
The correct answer is option A. "Brand P will be $118.26 cheaper than Brand Q." The brand that will have the lower lifetime cost after six years and by how much are to be determined when Robert plans on using his deep fryer about eight times per month.
Hence, the total number of times the deep fryer will be used for six years is:
8 times/month x 12 months/year x 6 years = 576 times
Firstly, let's calculate the lifetime cost of Brand P:
Cost of Deep Fryer: $144.00
Cost per use: $0.49 (electricity + oil)
Number of uses: 576
Lifetime cost:\($144.00 + ($0.49 x 576) = $417.84\)
Lifetime cost of Brand Q is to be calculated now:
Cost of Deep Fryer: $37.50
Cost per use: $0.75 (electricity + oil)
Number of uses: 576
Lifetime cost: \($37.50 + ($0.75 x 576) = $481.50\)
Therefore, Brand P will have a lifetime cost of $417.84 and Brand Q will have a lifetime cost of $481.50 after six years.
We can find the difference between the two amounts: \(481.50 - 417.84 = 63.66\)
The difference between the lifetime cost of Brand P and Brand Q will be $63.66.
However, we have to consider the amount of money saved by purchasing Brand P instead of Brand Q.
Hence, Brand P will be $118.26 cheaper than Brand Q, and thus, option A, "Brand P will be $118.26 cheaper than Brand Q" is the correct answer.
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How do I solve this problem that’s asking me to find the slope- intercept with two given points: (-9,-14) and (3,2)? I’ve already gotten to this point but I’m stuck and don’t know what to do
Answer:
4/3 i think
Step-by-step explanation:
(2+14)/(3+9)
A potter makes cups and saucers in a factory. He is paid $1.44 per
batch of cups and $1.20
per
batch of saucers. What is his gross pay if
he makes 9 batches of cups and 11 batches of saucers in one day?
Answer:
4
Step-by-step explanation:
Paralellogram FGHJ has vertices at F(4,4), G(7,4), H(5,2) and J(2,2). The parallelogram is translated down 7 units and then reflected over the y-axis. What are the coordinates of its image?
I will give brainliest!
Answer:
The coordinates of its image are (-4, -3), (-7, -3), (-5, -5), (-2, -5)
Step-by-step explanation:
If the point (x, y) translated k units down, then its image is (x, y - k)If the point (x, y) reflected over the y-axis, then its image is (-x, y)Let us solve the question
∵ Parallelogram FGHJ has vertices at F (4, 4), G (7, 4), H (5, 2), J (2, 2)
∵ The parallelogram is translated down 7 units
∴ k = 7
→ By using the first rule above, subtract every y-coordinates by 7
∴ F' = (4, 4 - 7) = (4, -3)
∴ G' = (7, 4 - 7) = (7, -3)
∴ H' = (5, 2 - 7) = (5, -5)
∴ J' = (2, 2 - 7) = (2, -5)
∵ The parallelogram is reflected over the y-axis
→ By using the 2nd rule above, change the sign of each x-coordinate
∴ F" = (-4, -3)
∴ G" = (-7, -3)
∴ H" = (-5, -5)
∴ J" = (-2, -5)
∴ The coordinates of its image are (-4, -3), (-7, -3), (-5, -5), (-2, -5)
Answer:
4.4 5.2 7.4 and 2.2
Step-by-step explanation:
Consider an example of an apartment: the number of bedrooms, bathrooms, and the floor of an apartment determines its price. Which is/are the predictor variable(s) in this example?.
By using function, it can be concluded that-
The predictor variables are bed, bath, floor
What is function?
A function from A to B is a rule that assigns to each element of A a unique element of B. A is called the domain of the function and B is called the codomain of the function.
There are different operations on functions like addition, subtraction, multiplication, division and composition of functions.
In a function y = f(x), x is the independent variable and y is the dependent variable.
The price of an apartment is dependent on the number of bedrooms, bathrooms and the floor of the apartment
So the required function is p = f(bed, bath, floor) where p is the price of the apartment
The predictor variables are bed, bath, floor
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A bicycle has a listed price of $765.95 before tax. If the sales tax rate is 9.5%, find the total cost of the bicycle with sales tax Included.
Answer:
The total cost is $ 589.06
Step-by-step explanation:
Answer:
$838.72
Step-by-step explanation:
$765.95 x 1.095 = $838.72
if you don’t help I could possibly die.
Sara's mom takes the parkway to work. It takes her 30 minutes to travel from mile marker 88 where she enters to her exit at mile marker 121. What is her average speed
Sara's mom average speed is 66mph. The next step is to divide the distance by the time: 33/0.5 = 66 mph.
What is average speed ?You may estimate the average pace at which an object will go a distance by looking at its average speed. Average speed is calculated by dividing a quantity by the time required to obtain that quantity.
Finding the distance and the time is necessary to calculate speed.
In this situation, you must deduct mile marker 88 from 121 to determine the distance.
121 - 88 = 33mile
Even though the time is 30 minutes, you're probably interested in miles per hour. 30 minutes must be converted to 0.5 hours.
The next step is to divide the distance by the time: 33/0.5 = 66 mph.
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Find the perimeter and area of each rectangle. Be sure to show all work! 1. 5 ft and 12.5 ft2. 15 m and 8.2 m
We can find the perimeter of a rectangle by means of the formula:
\(P=2a+2b\)Where a and b are the length of the sides of the rectangle
To find the area of the rectangle, we can use the formula:
\(A=a\times b\)Then for each rectangle, we have:
First rectangle, sides: 5ft and 12.5 ft
-Perimeter:
\(P=2\times5+2\times12.5=35\)Then, the perimeter of the first rectangle equals 35 feet
-Area:
\(A=5\times12.5=62.5\)Then, the area of the rectangle equals 62.5 ft^2
Second rectangle, sides: 15m and 8.2m
-Perimeter:
\(P=2\times15+2\times8.2=46.4\)Then, the perimeter of the rectangle equals 46.4 m
-Area:
\(A=15\times8.2=123\)Then, the area of this rectangle equals 123 m^2
m.c.m (3, 16, 2) ?? please help
\(\bf \colorbox{black} {\bf {\textcolor{blue}{topic = }{ \bf { \textcolor{orange}{mathematics = }{ \bf{ \textcolor{cyan}{answer = }}}}}}}\)
M.C.M=
\( \bf \textcolor{red}{ \huge{48}}\)
3-16-2|2
3-8-1 |2
3-4-1 |2
3-2-1 |2
3-1-1 |3
1-1-1
2⁴•3
M.C.M=
2•2=4
2•2=4
4•4=16
16•3=48
\( \bf \textcolor{green}{ \underbrace{48}}\)
xLasersx✨Devon purchased a new car valued at $16,000 that depreciated continuously at a rate of 35%. Its current value is $2,000. The equation represents the situation, where t is the age of the car in years and r is the rate of depreciation. About how old is Devon's car? Use a calculator and round your answer to the nearest whole number.
Given :
Devon purchased a new car valued at $16,000 that depreciated continuously at a rate of 35%.
Its current value is $2,000.
To Find :
Age of car.
Solution :
Price of car after 1 year :
\(P_1=P_o(1-0.35)\)
Price of car after 2 year :
\(P_2=P_1(1-0.35)\\\\P_2=[P_o(1-0.35)](1-0.35)\\\\P_2=P_o(1-0.35)^2\)
So, price of car after n years.
\(P_n=P_o(1-0.35)^n\)
\(2000=16000(1-0.35)^n\\\\0.65^n=0.125\\\\n\times log(0.56)=log(0.125)\\\\n=\dfrac{log(0.125)}{log(0.56)}\\\\n=3.58\)
Therefore, age of car in nearest whole number is 4 years.
Hence, this is the required solution.
Trigonometry question!! Need help seen a few on here with low reviews, i need trustworthy answers PLEASE!!
The value of angle θ is approximately 30 degrees.
We have,
We'll use the properties of sine and cosine functions and the unit circle.
Given that sin(θ) = 0.5 and cos(θ) = 0.866.
Using the Pythagorean identity: sin²(θ) + cos²(θ) = 1
Substituting the given values:
(0.5)² + (0.866)² = 1
0.25 + 0.749156 = 1
0.999156 ≈ 1
As the sum is approximately 1, it satisfies the Pythagorean identity.
Now, to find the value of angle θ, we can use inverse trigonometric functions:
θ = arcsin(0.5) ≈ 30 degrees (rounded to the nearest degree)
θ = arccos(0.866) ≈ 30 degrees (rounded to the nearest degree)
Note:
In trigonometry, angles can have multiple solutions due to periodicity.
In this case, both sine and cosine have the same value at 30 degrees and 150 degrees.
However, since we were not provided with the quadrant information, we consider the primary solution, which is approximately 30 degrees.
Thus,
The value of angle θ is approximately 30 degrees.
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The complete question:
Find the value of angle θ if sin(θ) = 0.5 and cos(θ) = 0.866.
A fisheries research report gives the following regression equation for the relationship between the length(L) in cm and weight (W) in grams, of the gracile lizardfish, a small marine fish that lives in the Indian Ocean:
lnW=!5.36+3.216lnL
What is the predicted weight of a lizardfish that was 12 cm long, based on this model?13.80 gram
The predicted weight of a lizardfish that is 12 cm long, based on the given model, is approximately 13.80 grams.
The predicted weight of a lizardfish that is 12 cm long, based on the given regression model lnW = -5.36 + 3.216lnL, is approximately 13.80 grams.
To calculate the predicted weight, we substitute the value of L = 12 cm into the regression equation. Taking the natural logarithm of both sides, we get:
lnW = -5.36 + 3.216ln(12)
Evaluating the right-hand side of the equation, we have:
lnW ≈ -5.36 + 3.216ln(12)
≈ -5.36 + 3.216(2.48491) [ln(12) ≈ 2.48491]
≈ -5.36 + 7.99604
≈ 2.63604
Taking the inverse of the natural logarithm (exponential function), we find:
W ≈ e^(2.63604)
≈ 13.80 grams
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Multiple Choice
Find each quotient.
one fourth divided by three eighths
A. one-third
B. two-thirds
C. start fraction 3 over 4 end fraction
D. three-eighths
Answer:
B
Step-by-step explanation:
What is the relationship between 2 and 2?
As per the question, in context of mathematics the relation between 2 and 2 is equality relationship.
What is equality relationship in mathematics?n mathematics, an equality relationship is a relationship between two quantities or expressions that are equal to each other. This relationship is represented using the equals sign (=).
Why are relations important in mathematics?Relations are important in mathematics because they allow us to describe and analyze the relationships between different quantities or values. Relations can be used to describe how two quantities are related to each other, such as whether they are equal, greater than, or less than each other.
The relationship between 2 and 2 is that they are both equal to each other. In mathematics, two is a number that is equal to the sum of one plus one. It is a cardinal number, which means it is used to count the number of objects in a set. Two is also an even number, which means it is divisible by 2 without a remainder.
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The average daily high temperature in madrid peaks at 92°f in the summer and drops as low as 33°f in the winter. the temperature can be modeled by t (d) = 29.5 cosine (startfraction 2 pi over 365 endfraction (d minus 204) ) 62.5, where d represents the day number of the year (january 1 is 1, january 2 is 2, and so on). during which day is the high temperature expected to be closest to 75°f? 106 63 270 204
The day in Madrid at which the high temperature is expected to be closest to 75 degree Fahrenheit is 270.
What is linear function?Linear function is the function in which the highest power of the unknown variable is one. Linear functions are used to model the real life problem in the mathematical expressions.
The average daily high temperature in Madrid peaks at 92°f in the summer and drops as low as 33°f in the winter.
The temperature can be modeled by the following function,
\(t (d) = 29.5 \cos\left(\dfrac{2\pi}{365}(d-204)\right)+62.5\)
Here, d represents the day number of the year (january 1 is 1, january 2 is 2, and so on).
The day has to be find out when the temperature is at 75 degree Fahrenheit. Put the value of temperature 75 in the above equation as,
\(75 = 29.5 \cos\left(\dfrac{2\pi}{365}(d-204)\right)+62.5\)
On solving the above equation for cosine function, we get the two values of d as,
\(d\approx 138\\d\approx 270\)
From the given options, 270 is the correct one.
Thus, the day at which the high temperature is expected to be closest to 75 degree Fahrenheit is 270.
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Answer: Mann is correct
Step-by-step explanation:
EDGE
ladder 13 feet long is leaning against a wall. if the foot of the ladder is pulled away from the wall at the rate of 0.5 feet per second, how fast will the top of the ladder be dropping when the base is 5 feet from the wall?
The top of the ladder is dropping at a rate of -5/24 ft/s (approximately -0.208 ft/s) when the base is 5 feet from the wall.To answer your question, we'll use the Pythagorean theorem for the right triangle formed by the ladder, wall, and ground.
Let x be the distance from the base of the ladder to the wall, and y be the distance from the top of the ladder to the ground. The ladder's length (13 ft) is the hypotenuse of the triangle.
According to the Pythagorean theorem:
x² + y² = 13²
When the base is 5 feet from the wall:
5² + y² = 13²
y² = 144
y = 12 ft
Now, we'll differentiate the equation with respect to time (t):
2x(dx/dt) + 2y(dy/dt) = 0
Given that the base is being pulled away at 0.5 ft/s (dx/dt = 0.5 ft/s), we can find the rate at which the top of the ladder is dropping (dy/dt) when x = 5 ft and y = 12 ft:
2(5)(0.5) + 2(12)(dy/dt) = 0
5 + 24(dy/dt) = 0
dy/dt = -5/24
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The top of the ladder is dropping at a rate of \(5/\sqrt(119)\)feet per second.
Let's begin by drawing a diagram of the situation:
|\
| \
| \ <-- ladder
| \
| \
| \
| \
|______\
wall
A right triangle formed by the ladder, the wall, and the ground.
Let's call the distance from the foot of the ladder to the wall "x" and the height of the ladder "y".
The ladder is 13 feet long and that the foot of the ladder is being pulled away from the wall at a rate of 0.5 feet per second.
The height of the ladder is changing when the foot of the ladder is 5 feet from the wall.
Using the Pythagorean theorem,
the Pythagorean theorem or Pythagoras' theorem is a fundamental relation in Euclidean geometry between the three sides of a right triangle.
It states that the area of the square whose side is the hypotenuse (the side opposite the right angle) is equal to the sum of the areas of the squares on the other two sides.
This theorem can be written as an equation relating the lengths of the sides a, b and the hypotenuse c, often called the Pythagorean equation
\({\displaystyle a^{2}+b^{2}=c^{2}.}\)
The theorem is named for the Greek philosopher Pythagoras, born around 570 BC.
The theorem has been proven numerous times by many different methods – possibly the most for any mathematical theorem.
The proofs are diverse, including both geometric proofs and algebraic proofs, with some dating back thousands of years.
\(x^2 + y^2 = 13^2\)
Differentiating both sides with respect to time t, we get:
\(2x dx/dt + 2y dy/dt = 0\)
We want to find. \(dy/dt\) when \(x = 5\), so, we need to substitute. \(x = 5\) and \(dx/dt = 0.5\) into the equation above:
\(2(5)(0.5) + 2y dy/dt = 0\)
\(y dy/dt = -5\)
\(dy/dt = -5/y\)
Pythagorean theorem to solve for y when. \(x = 5\):
\(5^2 + y^2 = 13^2\)
\(y^2 = 144 - 25\)
\(y^2 = 119\)
\(y = \sqrt(119)\)
The foot of the ladder is 5 feet from the wall, the height of the ladder is:
\(y = \sqrt(119) feet\)
And the rate of change of the height of the ladder is:
\(dy/dt = -5/y = -5/\sqrt(119) feet per second\)
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what is the sum of 7 of the interior angles of a regular octagon
The sum of all the eight interior angles of a regular octagon is first obtained using the general formula:
\((n-2)\times180^o\)where n = number of sides of the regular polygon
For a regular octagon, n = 8, and so we have:
\((8-2)\times180^o\)\(6\times180^o\)\(1080^o\)Now, we divide this total sum by the number of sides of the regular octagon in order to obtain the measure of an individual interior angle of the octagon, as follows:
\(\frac{1080^{o^{}}}{n}\)\(\frac{1080^o}{8}=135^o\)Now, to find the sum of 7 interior angles of a regular octagon, we simply multiply an individual interior angle of the octagon by 7, as follows:
\(\text{Sum of 7 interior angles = 7}\times135=945^o\)Therefore, the sum of 7 of the interior angles of a regular octagon is 945 degrees
Use the information to answer the following question.
Carolyn was asked to solve the following system of equations.
Her work is shown.
Step 1: 3x – 2y = 7
Step 2: 3x – 2(x + 2) = 7
Step 3: 3x – 2x + 4 = 7
Step 4: x + 4 = 7
Step 5: x = 3
Step 6: y = x + 2
Step 7: y = 3 + 2
Step 8: y = 5
Solution: (3, 5)
Did Carolyn make an error in her work?
Yes, Carolyn did not correctly combine like terms in Step 2.
Yes, Carolyn should have substituted the x-value into the first equation in Step 6.
No, Carolyn solved the system of equations correctly.
Yes, Carolyn did not correctly distribute the negative in Step 3.
Carolyn made an error in her work because she did not correctly distribute the negative in Step 3.
System of EquationsA system of equations is the given term math for two or more equations with the same variables. The solution of these equations represents the point of the intersection.
You can solve a system of equations by the adding or substitution methods. In the addition method, you eliminate a variable, on the other hand, in the substitution method you replace a variable for the other.
The question gives:3x-2y=7 (1)y=x+2The question shows that Carolyn applies the substitution method because she replaces the variable y (equation 2) in equation 1. See the given step 2.
3x – 2y = 7
3x – 2(x + 2) = 7
3x – 2x - 4 = 7 - here it is the mistake. (Carolyn did not correctly distribute the negative).
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Is (r-5) a factor of 2r^3-15r^2+27r-10?
To answer this question, we have to remember that:
Then, if (r - 5) is a factor of the given polynomial, if we substitute r by 5, that is, r = 5, into the polynomial, and if the result is zero, then the factor (x - 5) is a factor of the polynomial.
Then we have that:
\(f(r)=2r^3-15r^2+27r-10\)Now, we have to evaluate the polynomial for x = 5:
\(\begin{gathered} f(5)=2(5)^3-15(5)^2+27(5)-10 \\ f(5)=2(125)-15(25)+135-10 \\ f(5)=250-375+135-10 \\ f(5)=-375+(250+135-10) \\ f(5)=-375+375=0 \\ f(5)=0 \end{gathered}\)Since r = 5 is a root of the equation f(r) = 0, then (r - 5) is a factor of f(r).
In summary, (r - 5) is a factor of the given polynomial:
\(2r^3-15r^2+27r-10\)Find a so that line CD will have the given slope: C(3, -3), D(-3,a); m= -4/3
Work Shown:
m = (y2 - y1)/(x2 - x1)
-4/3 = (a - (-3))/(-3 - 3)
-4/3 = (a+3)/(-6)
-4*(-6) = 3(a+3)
24 = 3a+9
3a+9 = 24
3a = 24-9
3a = 15
a = 15/3
a = 5
Help please I need this done
Step-by-step explanation:
the answer is in the above image
Answer:
61°
Step-by-step explanation:
(x+18)°=(4x-15)°alternate angles, because BC is parallel to AD
x°+18°=4x°-15°
18°+15°=4x°-x°
33°=3x°
33°/3°=3x°/3°
11=x
angle ABD
90°-(x+18)°. the sides of a rectangle meet at 90°
90°-(11+18)°
90°-(29)°
90°-29°
61°
Mr. Miller is teaching his students about the volume of rectangular prisms. He writes the formula volume = length × width × height on the board and tells his students to get to work. He notices two of his students arguing over which leg represents length and which represents width. What should he do?
Select all answers that apply.
Mr. Miller should clarify the difference between length and width and how they relate to the dimensions of a rectangular prism. He could use visual aids or examples to help his students understand the concept better.
Mr. Miller should:
1. Explain to his students that the terms length, width, and height in the formula for the volume of rectangular prisms can represent any of the three dimensions, as long as they are consistent throughout the calculation.
2. Remind his students that the volume of a rectangular prism can be calculated by multiplying its three dimensions (length, width, and height) together, regardless of the order.
3. Encourage his students to focus on understanding the concept of volume and how it relates to the dimensions of rectangular prisms, rather than getting caught up in the specific labels of the dimensions.
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C) The determinant of 2 x 2 matrix A is 3. If you switch the rows and multiply the first row by 6 and the second row by 2, explain how to find determinant and provide the answer
Answer:
Step-by-step explanation:
A 2 × 2 matrix has 2 rows and 2 columns
Let us assume that matrix A is expressed as
a b
c d
The determinant of matrix A would be
(a × d) - (b × c)
Given that the determinant of matrix A is 3, it means that
ad + bc = 3
If we switch the rows, the first row becomes cd and the second row becomes ab. If we multiply the first row by 6 and the second row by 2, the matrix becomes
6c 6d
2a 2b
The determinant would be
(6c × 2b) - (2a × 6d)
Determinant = 12bc - 12ad
please someoen help me with this, i will give brainly only if answer is correct
Which of the following options best describes the zeros of the quadratic function above?
A. 1 real zero and 1 imaginary zero
B. 1 real zero
C. 2 imaginary zeros
D. 2 real zeros
Answer:B 1 real zero
Step-by-step explanation:
if its assumptions are met, the analysis of variance technique is appropriate when ____.
Answer:
comparing the means of three or more groups
Step-by-step explanation:
In the chemistry lab and experiment requires
500 mL of one ingredient to be mixed with 1000 mL of another how many ounces is the solution
Answer:
50.7202 ounces
Step-by-step explanation:
(500ml+1000ml) / (29.574 ml per ounce) = 50.72 US Fluid Ounces
What is the critical value for a 95% confidence interval estimate of the population proportion of managers who have caught salespeople cheating on an expense report