Answer:
the answer is option 4th
Consider the line 3x+2y=-1.
Find the equation of the line that is perpendicular to this line and passes through the point (5, 3).
Find the equation of the line that is parallel to this line and passes through the point (5, 3).
Note that the ALEKS graphing calculator may be helpful in checking your answer.
Equation of perpendicular line:
Equation of parallel line:
0
ABC bank requires a 20% down payment on all its home loans. if the house is priced at $105,000, what is the amount of the down payment required by the bank?
A) $21,000
B) $210,000
C) $14,500
D) $18,000
correct answer is A) $21,000
Answer:
A) $21,000
Step-by-step explanation:
Percentage of down payment that ABC bank requires to be paid = 20%
Price of the house = $10500
Then
Amount of down payment
that needs to be made = (20/100) * 105000
= 21000 dollars
The answer is A) $21,000
20% is 1/5
1/5 of 105,000 is 21,000
A company that manufactures and sells consumer video cameras sells two versions of their popular
hard disk camera, a basic camera for $750, and a deluxe version for $1250. About 75% of customers
select the basic camera. Of those, 60% purchase the extended warranty for an additional $200. Of
the people who buy the deluxe version, 90% purchase the extended warranty.
a) Sketch the probability tree for total purchases.
b) What is the percentage of customers who buy an extended warranty?
c) What is the expected revenue of the company from a camera purchase (including warranty if
applicable)?
d) Given that a customer purchases an extended warranty, what is the probability that he or she bought
the deluxe version?
The probability that he or she bought the deluxe version is 0.5
a) Here is the probability tree for total purchases:
0.75
┌─────────────┐
│ Basic │
│ Camera │
└───────┬─────┘
│
│0.6
│
▼
┌──────────────┐
│Extended │
│Warranty │
└─────┬────────┘
│
│0.4
│
▼
┌──────────────┐
│ │
│ No │
│Warranty │
└──────────────┘
b) To calculate the percentage of customers who buy an extended warranty, we need to consider both branches of the probability tree that lead to purchasing an extended warranty.
From the probability tree, we can see that 75% of customers select the basic camera, and of those, 60% purchase the extended warranty. Additionally, 25% of customers select the deluxe camera, and of those, 90% purchase the extended warranty.
Now we can calculate the percentage of customers who buy an extended warranty:
Percentage = (Percentage of Basic Camera Customers x Percentage of Basic Camera Customers with Extended Warranty) + (Percentage of Deluxe Camera Customers x Percentage of Deluxe Camera Customers with Extended Warranty)
Percentage = (0.75 x 0.6) + (0.25 x 0.9)
Percentage = 0.45 + 0.225
Percentage = 0.675 or 67.5%
Therefore, 67.5% of customers buy an extended warranty.
c) To calculate the expected revenue of the company from a camera purchase, we need to consider the different scenarios: customers who buy the basic camera without the warranty, customers who buy the basic camera with the warranty, customers who buy the deluxe camera without the warranty, and customers who buy the deluxe camera with the warranty.
Expected Revenue = (Percentage of Basic Camera Customers x Price of Basic Camera) + (Percentage of Basic Camera Customers with Extended Warranty x (Price of Basic Camera + Price of Extended Warranty)) + (Percentage of Deluxe Camera Customers x Price of Deluxe Camera) + (Percentage of Deluxe Camera Customers with Extended Warranty x (Price of Deluxe Camera + Price of Extended Warranty))
Expected Revenue = (0.75 x $750) + (0.75 x 0.6 x ($750 + $200)) + (0.25 x $1250) + (0.25 x 0.9 x ($1250 + $200))
Expected Revenue = $562.50 + $382.50 + $312.50 + $337.50
Expected Revenue = $1,595.00
Therefore, the expected revenue of the company from a camera purchase, including the warranty if applicable, is $1,595.00.
d) To calculate the probability that a customer bought the deluxe version given that they purchased an extended warranty, we can use conditional probability.
Probability (Deluxe Version | Extended Warranty) = Probability (Deluxe Version and Extended Warranty) / Probability (Extended Warranty)
From the probability tree, we can see that the probability of buying the deluxe version and extended warranty is 0.25 x 0.9 = 0.225, and the probability of purchasing an extended warranty is 0.45 (as calculated in part b).
Probability (Deluxe Version | Extended Warranty) = 0.225 / 0.45
Probability (Deluxe Version | Extended Warranty) = 0.5 or 50%
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Need help with the last question
D. Which transformations (vertical shift, horizontal shift, dilations, and reflections) change the domain of a function.
Support your answers with equations and graphs.
The transformations that change the domain of a function are given as follows:
Horizontal shift.Dilation.Reflection over the y-axis.What is the domain of a function?The domain of a function is defined as the set containing all the values assumed by the independent variable x of the function, which are also all the input values assumed by the function.
Hence we must look at transformations that change the values of x of the function, which are given as follows:
Horizontal shift, which are f(x + a) and f(x - a).Dilation, which are f(ax).Reflection over the y-axis, which is f(-x).Learn more about domain and range at https://brainly.com/question/26098895
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Over the past few years Michael has increased his fee from $5 from mowing lawn to $11 per hours what percent did Michael fee increase
Answer:
120%
Step-by-step explanation:
Hope this helps
Colorblindness is any abnormality of the color vision system that causes a person to see colors differently than most people, or to have difficulty distinguishing among certain colors (www.visionrx.com).
Colorblindness is gender-based, with the majority of sufferers being males.
Roughly 8% of white males have some form of colorblindness, while the incidence among white females is only 1%. A random sample of 20 white males and 40 white females was chosen.
Let X be the number of males (out of the 20) who are colorblind.
Let Y be the number of females (out of the 40) who are colorblind.
Let Z be the total number of colorblind individuals in the sample (males and females together).
Which of the following is true regarding the random variables X and Y?
A) Both X and Y can be well approximated by normal random variables.
B) Only X can be well approximated by a normal random variable.
C) Only Y can be well approximated by a normal random variable.
D) Neither X nor Y can be well approximated by a normal random variable.
Answer:
D) Neither X nor Y can be well approximated by a normal random variable.
Step-by-step explanation:
X = number of males (out of the 20) who are colorblind.
Y = number of females (out of the 40) who are colorblind.
Z = total number of colorblind individuals in the sample (males and females together).
The condition to use the normal approximation is that np > 5 and nq > 5
For X:
n = 20, p = 8% = 0.08,
q = 1 - 0.08 = 0.92
np = 20 * 0.08
np = 1.6 ( np < 5)
np = 20 * 0.92
np = 18.4 ( nq > 5)
For Y:
n = 40, p = 1% = 0.01,
q = 1 - 0.01 = 0.99
np = 40 * 0.01
np = 0.4 ( np < 5)
np = 40 * 0.99
np = 39.6 ( nq > 5)
For both X and Y, np < 5 and nq > 5. Since both np and nq are not greater than 5, both samples cannot be approximated by a normal distribution.
Answer:
Therefore, the answer is Neither X nor Y can be well approximated by a normal random variable.Option DStep-by-step explanation:
Here X ≈ B (n = 20 , p = 0.08)
Y ≈ B (n = 40 , p = 0.01)
To use normal approximation the condition is np > 5 , nq > 5
For X,
\(np=20 \times 0.08\\\\=1.6\\\\<5\)
\(nq=20 \times 0.98\\\\=18.4\\\\>5\)
For Y
\(np=40 \times 0.01\\\\=0.4\\\\<5\)
\(nq=20\times0.98\\\\=39.6\\\\>5\)
So, in the both cases the value of np < 5 so normal approximation is not good.
Therefore, the answer is Neither X nor Y can be well approximated by a normal random variable.Option DComplete this puzzle using each of these numbers only once : 2, 4, 5, 7, 8, 11, 13, 14, 16 Put the even numbers in the squares and the odd nurmbers in the circles. Each row of three numbers must add up to 26.
Here is one solution to the puzzle:
Squares: 2, 8, 16
Circles: 5, 7, 14
Total: 26
You can verify that each row of three numbers adds up to 26: 2 + 8 + 16 = 26, 5 + 7 + 14 = 26.
What are even and odd numbers?An even number is a number that can be divided into two equal groups. An odd number is a number that cannot be divided into two equal groups. Even numbers end in 2, 4, 6, 8 and 0 regardless of how many digits they have. Odd numbers end in 1, 3, 5, 7, 9.
Therefore, the correct answer is as given above
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the circumference of a circle is 12.3 in what is the radius of the circle
Answer: r≈1.96
Step-by-step explanation:
C=2πr
Solving for r
r=C
2π=12.3
2·π≈1.95761
Please awnser asap I am
Stuck
Answer:
it is too blury to read
Step-by-step explanation:
On its own, 5 � � 5ab5, a, b is the product of
The product of 5 × 5ab × 5, a, b is 125ab5 when written in its most Simple form
The expression 5 × 5ab × 5, a, b is equal to 125ab5. The reasoning is that when we multiply 5 by 5ab, we get 25ab, which we then multiply by 5 to get 125ab. Since a, b are variables, the product 125ab5 is the product of 5 × 5ab × 5, a, b, when written in its most simple form.
The expression 5 × 5ab × 5, a, b is an algebraic expression, which consists of numbers, variables, and operators. Variables are usually represented by letters or other symbols, while operators such as +, -, ×, ÷, ^ are used to indicate mathematical operations such as addition, subtraction, multiplication, division, and exponentiation. In algebra, expressions can be simplified by combining like terms, expanding brackets, and applying other rules of arithmetic.
The most simple form of an expression is the one that cannot be further simplified.In the given expression, 5 × 5ab × 5, a, b, we can see that the number 5 appears three times, so we can simplify the expression by multiplying the numbers together.
Similarly, we can multiply the variables a and b together to get the term ab. Finally, we write the result as 125ab5, which is the product of 5 × 5ab × 5, a, b, in its most simple form.
Therefore, the product of 5 × 5ab × 5, a, b is 125ab5 when written in its most simple form.
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Find the approximate area of the shaded region. Use 3.14 for pi
The area of the shaded region of the rectangle is approximately 573.92 square feet.
What is the area of the shaded region?The figure in the image is that of a rectangle with a semi-circle inscribed in it.
The area of rectangle is expressed as:
Area = Length × Width
The area of semi-circle is expressed as:
Area = 1/2 × πr²
To determine the area of the shaded region, we simply subtract the area of the semi-circle from the area of the rectangle.
Area of shaded region = area of rectangle - area of semi-circle
Area of shaded region = ( Length × Width ) - ( 1/2 × πr² )
From the image:
Length = 40 ft
Width = 20 ft
Radius r = 12 ft
Plug the values into the above formula:
Area of shaded region = ( Length × Width ) - ( 1/2 × πr² )
Area of shaded region = ( 40 × 20 ) - ( 1/2 × 3.14 × 12² )
Area of shaded region = ( 800 ) - ( 226.08 )
Area of shaded region = 573.92 ft²
Therefore, the area is approximately 573.92 square feet.
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whats the perimeter of this shape??
The perimeter of the shape is 10 inches.
How to calculate the perimeter?It's important to note that the perimeter of a shape or calculated by adding all the sides together.
In this case, this is a rectangle and the perimeter will be:
Perimeter = 2(length + width)
Length = 4 inches
Width = 1 inch
Perimeter = 2(length + width)
Perimeter = 2(4 + 1)
Perimeter = 10 inches.
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The fraction of PKR 1 is 50 paisas
The fraction that represents the rate between PKR and Paisas is given as follows:
1/50.
What is a fraction?A fraction is a numerical representation of the division of the two terms x and y, as follows:
Fraction = x/y.
As the rate is PKR 1 = 50 paisas, we have that the fraction that represents the rate between PKR and Paisas is given as follows:
1/50.
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What is the difference between 49.2 and 12.3
Answer:
49.2 - 12.3 = 36.9
Step-by-step explanation:
Difference in Math terms means Subtract
Find the unit rate.
180 miles in 3 hours
The unit rate is
miles per hour.
Pls hurry
Answer:
60 miles per hour
Step-by-step explanation:
Consider the structure of the wording: "miles per hour"
The word "per" means for each. There is you clue.
Each is, one of and one of is unit measurement
So the controlling element in this question is that you need to convert the 3 hours into 1 hour.
Using ratio properties
180
3
=
x
miles
1
hour
We need to 'force' the left hand side into the same form as the right. That is: we need to convert the denominator into 1 and see what happens to the numerator.
⇒
180
÷
3
3
÷
3
=
x
1
⇒
60
1
=
x
1
So the unit rate of speed is
60
miles
per
−−−
hour
What is the value of the expression shown below?
3 over 5 to the power of 2 + 4 × 3 − 2
Answer:
16 If you see me
Step-by-step explanation:
This is relative frequency tables. Can someone help ?
Answer:
87 is the answer
Hope it helps!!!
Step-by-step explanation:
HELP ASAP GEOMETRY 40 POINTS
Use the image to answer the following questions.
(a) The angle pitch of a roof is safest when measuring between 18° -27°. According to these guidelines, is
the roof pictured in the image safe? (Note:
(
b) What is length of the roof line (segment PR)? Round answer to the nearest tenth of a foot and show all
your work
Answer:
Part (a)
It's not stated, but I'm assuming that RV = VQ
If so, then we use the tangent ratio to connect the opposite side PV = 7 and adjacent side RV = 16
Focus on triangle RPV
tan(angle) = opposite/adjacent
tan(R) = PV/RV
tan(x) = 7/16
x = arctan(7/16) ...... same as inverse tangent
x = 23.6293777 ...... which is approximate
Rounding to the nearest degree, the angle x is roughly 24 degrees.
Since 18 < 24 < 27, this means the roof pitch follows the safety guidelines.
Answer: Yes the roof is safe====================================================
Part (b)
Again we only focus on triangle RPV
We have two pathways we can take. The first option is to use the pythagorean theorem
a^2+b^2 = c^2
c = sqrt(a^2 + b^2)
PR = sqrt( (RV)^2 + (PV)^2 )
PR = sqrt( (16)^2 + (7)^2 )
PR = 17.464249 .... approximate
PR = 17.5
----------
The second path you could take is to use the angle x we found in part (a). Use either the cosine or sine ratios like so
sin(angle) = opposite/hypotenuse
sin(x) = PV/PR
PR = PV/sin(x)
PR = 7/sin(23.6293777)
PR = 17.464249
PR = 17.5
The pathway for cosine will look almost identical to this, but you'll be computing PR = RV/cos(x) instead.
----------
Answer: 17.5 feetI need help with this question please and thank you
1. The ordered pairs are as follows
(0, 0)
(1, 5)
(2, 10)
(3, 15)
(4, 20)
2. The rules in the pattern of the days count is
n + 1
3. the rule of the pattern of the cost column is
n + 5
4. The relationship between the terms is
y = 5x
5. It will cost $40 to rent a scooter for 8 days
6. The ordered pair is in 1. and the graph is attached
7. It will cost $32.5 to rent a scooter for 6 1/2 days
What are ordered pairs?In mathematics, an ordered pair is a set of two elements arranged in a specific order. The order of the elements in the pair is important, meaning that swapping the elements changes the identity of the pair.
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A pension fund manager is considering three mutual funds The first is a stock fund, the second is a long-term government and corporate bond fund, and the third is a T-bill money market fund that yields a sure rate of 5.3%. The probability distributions of the risky funds are:Expected Return Standard DeviationStock fund (S) 14% 43%Bond fund (B) 7% 37%The correlation between the fund returns is .0459What is the reward-to-volatility ratio of the best feasible CAL?
For the correlation between the fund returns is .0459, the reward-to-volatility ratio of the best feasible CAL is equals to 0.1621 or 16.21%.
A probability distribution is helps to determine the future what frequency distribution is to the past. Standard deviation is used in the concept of risk of portfolio of investment. Risk refer to the dispersion of a probability distribution.
Stock fund (S) Bond fund (B)
Expected Return 14% 7%
Standard Deviation 43% 37%
Risk-free returns , Rf = 5.3%
Correlation coefficient = 0.459
Covariance : 0.459 = COV(s,b)/0.43×0.37
Covariance = 0.073
Stock Fund =( (σB)²− σS× σB× correationco, SandB)/((σS)²(σB)² - 2 × σS× σB× correationco, SandB)
= ((0.37)²− 0.43× 0.37× 0.0459) /((0.43)²(0.37)² −2× 0.43× 0.37× 0.0459)
Weight of S = 42.18%
Weight of B = 1 - 42.18 = 57.82%
Expected Return of the portfolio (Rp) = WS× E(RS) + WB × E(RB) = 42.18 × 14% + 57.82 × 7%
= 5.90 + 4.05 = 9.95
Standard Deviation of the portfolio (SDp)
= (WS²SD² + WB²× lSD²+ 2WS WBCov(S,B))1/2
= 28.68
Reward to volatility = (Expected return - Rf) / SD of Portfolio
= (9.95- 5.3) / 28.68
=0.1621
Hence, the required volatility is 0.1621 or 16.21%.
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A fair coin is flipped 3 times. Let X be the number of heads in the 3 tosses.
(1) Find the pmf for X;
(2) calculate the expected value of X.
Answer:
1)
P(X = 0) = 0.125
P(X = 1) = 0.375
P(X = 2) = 0.375
P(X = 3) = 0.125
2)
E(X) = 1.5
Step-by-step explanation:
For each coin, there are only two possible outcomes. Either it is heads, or it is tails. The probability of a toss being heads or tails is independent of any other toss. This means that the binomial probability distribution is used to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
\(P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}\)
In which \(C_{n,x}\) is the number of different combinations of x objects from a set of n elements, given by the following formula.
\(C_{n,x} = \frac{n!}{x!(n-x)!}\)
And p is the probability of X happening.
The expected value of the binomial distribution is \(E(X) = np\).
A fair coin is flipped 3 times.
Fair means that it is equally as likely to be heads or tails, so \(p = 0.5\).
3 times means that \(n = 3\)
(1) Find the pmf for X;
Probability of each outcome. So
\(P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}\)
\(P(X = 0) = C_{3,0}.(0.5)^{0}.(0.5)^{3} = 0.125\)
\(P(X = 1) = C_{3,1}.(0.5)^{1}.(0.5)^{2} = 0.375\)
\(P(X = 2) = C_{3,2}.(0.5)^{2}.(0.5)^{1} = 0.375\)
\(P(X = 3) = C_{3,3}.(0.5)^{3}.(0.5)^{0} = 0.125\)
(2) calculate the expected value of X.
\(E(X) = np = 3*0.5 = 1.5\)
Troy and Lisa were shopping for school supplies. Each purchased different quantities of the same notebook and thumb drive. Troy bought 4 notebooks and 5 thumb drives for $116. Lisa bought 2 notebooks and 3 thumb drives for $68. Find the cost of each notebook and each thumb drive
Answer:
1 notebook=$30.7
1 thumb drive =$12.2
Explanation:
Let x represent the number of notebooks and y represent the number of thumb drives.
4x+5y = $116 ................1
2x+3y = $68..................2
4x+2x=$116+$68
6x=184
\( \frac{6x}{6} = \frac{184}{6} \\ \\ x = \frac{92}{3}\)
Therefore, the cost of each notebook=30.66
=$30.7
2x+3y=$68
2(30.7)+3y =$68
$31.4+3y=$68
3y=$68 - $31.4
3y=36.6
\( \frac{3y}{3} = \frac{36.6}{3} \\ y = \frac{36.6}{3} = 12.2\)
Therefore, the cost of each thumb drive = $12.2
Proof
2(30.7)+3(12.2)=$68
31.4+36.6=$68.0
What is the slope of the line that contains these pointed
For this you can use the slope formula, that is
\(\begin{gathered} m=\frac{y_2-y_1}{x_2-x_1} \\ \text{Where} \\ m\colon\text{ slope of the line} \\ (x_{1,}y_1)\text{ and }(x_{2,}y_2)\text{ are any two points on the line} \end{gathered}\)So, for example if you take (x1,x2) = (-4,2) and (y1,y2) = (-2,8), you have
\(\begin{gathered} m=\frac{y_2-y_1}{x_2-x_1} \\ m=\frac{8-2}{-2-(-4)} \\ m=\frac{8-2}{-2+4} \\ m=\frac{6}{2} \\ m=3 \end{gathered}\)Therefore, the slope of the line that contains these points is 3.
The hypotenuse of a right triangle os 13.0 and one leg is 2.0 units shorter than the other. Find the dimensions of the figure (rounded to the nearest tenth).
Answer:Let, one leg be x units.
since the other leg is 9.0 units shorter than the other,
the measure of the other leg =x-9
hypotenuse =13.0 units
According to Pythagorean theorem, the square of the hypotenuse is equal to the sum of squares of the other two sides.
x^2 +(x-9)^2 =13^2
x^2 + x^2 -18x +81 = 169
2x^2-18x-88=0
Divide the whole equation by 2
x^2 - 9x -44 =0
Let's use the quadratic formula to find the roots.
formula: x= [-b ± sqrt(b^2-4*a*c)]/2*a
a=1 b=-9 c=-44
x= [9±sqrt(81+176)]/2
=[9±sqrt(257)]/2
=[9±16.03]/2
=25.03/2 or -7.03/2
length of a triangle cannot be negative,
Therefore, x=25.03/2 =12.52
one leg =12.5 units
other leg =12.52-9 =3.5 units
Step-by-step explanation:
Choose as many answers as apply.
According to the lesson, things you can do to help you decide on a bank include:
compare interest rates
determine which bank has the most attractive buildings
ask friends where they bank
visit two or three branch office
Some things you can do to help you decide on a bank include:
Ask friends where they bankVisit two or three branch officesCompare interest ratesWhy are these important?When trying to locate a bank that offers competitive returns on savings and favorable borrowing costs, consider comparing interest rates.
To gather additional information about certain banks, why not solicit feedback from acquaintances? People who have personal experience with a particular bank can provide valuable insights into their satisfaction levels with regards to customer service, for example.
Finally, taking the time to visit branch offices can offer valuable clues regarding convenience level and overall atmosphere.
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Winston is making a model of a statute using a scale where 2 inches equals 6 feet. If the actual height of
the statue is 20 feet, how tall is the model, in inches?
Answer:
6 2/3 inches
Step-by-step explanation:
2 inches / 6 feet * 20 feet = 6 2/3 inches
Can anybody help me
Answer:
7a+14
Step-by-step explanation:
You distribute the 7 across the equation (7xa)+(7x2) = 7a=14
Two sides of a triangle have lengths 43 and 67. The angle included between these sides measures 27degrees°. To the nearest hundreth, what is the length of the third side?
The length of the third side of the triangle, to the nearest hundredth, is approximately 54.75 units.
1. We have a triangle with two known side lengths: 43 and 67 units.
2. The angle included between these sides measures 27 degrees.
3. To find the length of the third side, we can use the Law of Cosines, which states that \(c^2 = a^2 + b^2\) - 2ab * cos(C), where c is the third side and C is the included angle.
4. Plugging in the known values, we get \(c^2 = 43^2 + 67^2\) - 2 * 43 * 67 * cos(27).
5. Evaluating the expression on the right side, we get \(c^2\) ≈ 1849 + 4489 - 2 * 43 * 67 * 0.891007.
6. Simplifying further, we have \(c^2\) ≈ 6338 - 5156.898.
7. Calculating \(c^2\), we find \(c^2\) ≈ 1181.102.
8. Finally, taking the square root of \(c^2\), we get c ≈ √1181.102 ≈ 34.32.
9. Rounding to the nearest hundredth, the length of the third side is approximately 34.32 units.
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What is the square root of 9