The required average speed of the train is calculated to be 60 mph, when the train travels certain distance and stops.
Distance between station A and station B is given as 120 miles.
A train traveling from station A to station B travels exactly 1/3rd of the distance when it is held up and stops for 16 minutes.
Let, its average speed was x mph.
Then, total time taken if it didn't stop = 120/x h
Now, before stop it took time = ( 1/3 × 120)/x h = (40/x) h
After stop the time it took = 80/(x + 15) h
i.e, 40/x + 16/60 + 80/(x+15) = 120/x
⇒ 80/(x + 15) + 8/30 = 80/x
⇒ 80(1/x - 1/(x + 15)) = 8/30
⇒ 10 × (15/x² + 15x) = 1/30
⇒ x² + 15x = 10 × 15 × 30
⇒ x² +15x - 450 = 0
⇒ x² +75x -60x - 450 = 0
⇒ (x+75)(x-60) = 0
⇒ x = 60 or, x = -75
As speed cannot be negative, the average speed is 60 mph.
The given question is incomplete. The complete question is 'Find the average speed of the train before it stopped for 16 minutes.'
To know more about speed:
https://brainly.com/question/21626351
#SPJ4
Question B is where I am confused
Dan should leave his house at least on 08.33 am.
What is Addition?Addition is one of the basic mathematical operations where two or more numbers is added to get a bigger number.
The process of doing addition is also called as finding the sum.
We have,
Dan has to get to work at 10.30 am.
There is a 20 minute walk from the bus stop in Coventry to work.
Dan should arrive at the bus stop in Coventry at 10.10 am.
The latest time of the bus that reaches Coventry closest to the time that Dan should reach at the bus stop in Coventry is 10.06.
The bus which reaches at Coventry at 10.06 depart from Birmingham at 08.38.
There is a 5 minutes to walk from his house to Birmingham bus stop.
Dan should leave the house at 08.33 am.
The latest time that Dan should leave the house is 08.33 am.
Learn more about Addition here :
https://brainly.com/question/29560851
#SPJ1
an automobile manufacturer claims that their jeep has a 55 miles/gallon (mpg) rating. an independent testing firm has been contracted to test the mpg for this jeep. after testing 751 jeeps they found a mean mpg of 54.6 with a standard deviation of 2.7 mpg. is there sufficient evidence at the 0.05 level that the jeeps have an incorrect manufacturer's mpg rating? state the null and alternative hypotheses for the above scenario.
Null hypothesis: H₀ : μ = 55
Alternative hypothesis: H₁: μ [tex]\neq[/tex] 55
Given,
Rating = 55 mpg
For a two-tailed alternative hypothesis, it involves the "not equal to symbol,≠ ". This can never be in the null hypothesis. In order to reject the null hypothesis, the test statistic must be smaller than the critical value on the left tail or greater than the critical value on the right tail.
the claim is the jeep has a 55 mpg rating and we want to test whether the rating is correct or incorrect. So, it is a two-tailed hypothesis because the rating can be less than or more than 55 mpg.
Therefore, H₀ : μ = 55
H₁: μ [tex]\neq[/tex] 55
These are the required null and alternative hypotheses.
To read more about the hypothesis:
https://brainly.com/question/29576929
#SPJ4
Find the missing length.
Answers:
37
50
60
33
In triangle UVT, the missing length, i.e., UV is 37. It is applicable in the case when triangle UVT ≈ triangle DEF.
What do you mean by congruent triangles?Two triangles that are identical in size and shape are said to be congruent triangles. They share the same number of vertices, angles, and sides—three. The matching sides and angles of the two triangles must match in size for them to be considered congruent. In other words, when the two triangles are positioned next to one another, they must match.
How can you find the missing length?The Pythagorean theorem may be used to determine the length that is lacking if the other three lengths are known. According to the Pythagorean theorem, the square of the longest side of a right triangle is equal to the sum of the squares of the two shorter sides. By computing the square root of the sum of the squares of the other three lengths, it is possible to determine the missing length.
To know more about congruent triangles, visit
brainly.com/question/22062407
#SPJ1
The height of a vase is 45. 7 centimeters when rounded to the nearest tenth of a centimeter. What is the shortest possible height of the vase? Give your answer to 3 decimal places
The shortest possible height of the vase rounded to the nearest tenth of a centimetres is 45.650.
The concept of rounding the numbers will be used here to find the answer. Concerning this, we must know, that a number will be rounded to next digit, if the subsequent number if 5 or more than 5.
We know 6 preceedes 7 and the number is rounded to nearest tenth. So, the just possible number will be 45.69. However, as mentioned, it will be rounded to 45.7. The same will happen for till 45.65. Proceeding before this, we get 45.64 which will not be rounded to 45.7. Thus, the smallest possible number is 45.65 centimetres.
Similarly, the 1 at hundredths place will be the smallest number. This is because, rounding off 5 will eventually lead to rounding off to 45.7.
Learn more about rounding off -
https://brainly.com/question/28128444
#SPJ4
what is the vaulue of |6| - | -6| - (-6)
Answer:
I think it is just 6
Step-by-step explanation:
I hope it helped!
Mark’s mother is planning to invest $25,000 into each of two savings accounts to save money to remodel her restaurant. • Bank 1 offers an interest rate of 5. 25%. • Bank 2 offers an interest rate of 8. 5%. Both accounts pay simple interest. Marks's mother will leave the money in each account for exactly 3 years. What is the sum of the interest the two accounts will earn at the end of 3 years?
[tex]~~~~~~ \stackrel{\textit{\LARGE Bank 1}}{\textit{Simple Interest Earned}} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\\ P=\textit{original amount deposited}\dotfill & \$25000\\ r=rate\to 5.25\%\to \frac{5.25}{100}\dotfill &0.0525\\ t=years\dotfill &3 \end{cases} \\\\\\ I = (25000)(0.0525)(3) \implies I = 3937.5 \\\\[-0.35em] ~\dotfill[/tex]
[tex]~~~~~~ \stackrel{\textit{\LARGE Bank 2}}{\textit{Simple Interest Earned}} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\\ P=\textit{original amount deposited}\dotfill & \$25000\\ r=rate\to 8.5\%\to \frac{8.5}{100}\dotfill &0.085\\ t=years\dotfill &3 \end{cases} \\\\\\ I = (25000)(0.085)(3) \implies I = 6375 \\\\[-0.35em] ~\dotfill\\\\ 3937.5~~ + ~~6375\implies \text{\LARGE 10312.5}[/tex]
a particular professor is known for his arbitrary grading policies. each paper receives a grade from the set {a, a-, b . b, b-, c }, with equal probability, independent of other papers. how many papers do you expect to hand in before you receive each possible grade at least once?
Papers do you expect to hand in before you receive each possible grade at least once is 14.7.
given,
Total number of grades= 6
Imagine Y to be number of papers till we get all grades once. Hence
Yi= Number of papers till we get i th newer grades
Expected value of Y₆= ?
The difference between getting a new grade maybe represented as
Xi= Yi+1 - Yi
Using above equation for Y₆, we get
[Y₆]= ∑⁵i=o Xi
which means, we need to get 5 different grades from the first grade.
Number of tries to see second new grade maybe represented as
X₁= {(6-1)/6}, which, for generalization is written as Xi=geo{(6-i)/6}
Xi represents the success probability of seeing further new grade.
Expected value of Xi is inverse of parameter of geometric distribution, which is,
[Xi] = 6/(6-i) = 6.{1/(6-i)}
Expected value of Y₆= [∑⁵ i=0 Xi] = ∑⁵ i=0 [Xi]
Substituting value of [Xi] in the above expression
6.∑⁵i=0 {1/(6-i)} = 6. ∑⁶i=1 (1/i)
Now solving for 6 grades
Y₆ = 6[(1/6) + (2/6) + (3/6) + (4/6) + (5/6) + (6/6)]
Y₆ = 6 x 2.45 = 14.7
Learn more about probability here :-
https://brainly.com/question/29381779
#SPJ4
What is a asymptote?
Answer:
It is a line that continually approaches a given curve but does not meet it at any finite distance.
Step-by-step explanation:
Answer:
See below
Step-by-step explanation:
An asymptote is a line that continually approaches a given curve but does not meet it at any finite distance.
For example, for the rational function [tex]f(x)=\frac{1}{x}[/tex], there's a horizontal asymptote at y=0 because as x approaches infinity, y gets increasingly closer to 0.
Same goes for the vertical asymptote of x=0 where as y approaches infinity, x gets increasingly closer to 0.
Amal can run 1/8 mile in 1/12 minutes. If Amal can maintain that pace, how long will it take him to run 1 mile?
It will take 2/3 minutes to run 1 mile.
What is division?
The division in mathematics is one kind of operation. In this process, we split the expressions or numbers into the same number of parts.
Given:
Amal can run 1/8 mile in 1/12 minutes.
If Amal can maintain that pace,
it will take him to run 1 mile,
= 1/12 ÷ 1/8
= 1/12 x 8/1
= 8/12
= 2/3 minutes.
Therefore, the required time is 2/3 minutes.
To learn more about the division;
https://brainly.com/question/13263114
#SPJ1
Solve the quadratic equation 3x2 + x - 5 = 0
The quadratic equation 3x² + 2x - 5 = 0 is solved to give x = 1 and -5/3
How to solve the quadratic equationFrom the information given, we have the quadratic equation as;
3x² + 2x - 5 = 0
Using the factorization method of solving quadratic equation, we have to take the following steps
Multiply the coefficient of x² by the constant -5
Find the pair factors of the product of their multiplication that sums up to 2
The pair factors are +5 and -3
Substitute the values
3x² + 5x - 3x - 5 = 0
Add parentheses
(3x² + 5x) - (3x - 5) =0
factorize the values
x(3x +5) - 1(3x + 5) = 0
The values of x are;
x= 1 and x = -5/3
Thus, the values are 1 and -5/3
Learn more about quadratic equations here:
https://brainly.com/question/1214333
#SPJ1
The complete question:
Solve the quadratic equation 3x2 + 2x - 5 = 0 using factorization method
A set of data contains 10 negative numbers and 4 positive numbers. Which one of these statements must be true?
Statement "B. the median is a negative number" will be correct among these options.
What is Mean?The sum of all values divided by the total number of values determines the mean (also known as the arithmetic mean, which differs from the geometric mean) of a dataset. The term "average" is frequently used to describe this measure of central tendency.
Given, that A set of data contains 10 negative numbers and 4 positive numbers.
Since the value of data is not given it can be any positive or negative numbers
mode:
A mode is described as a value in a group of values that occurs most frequently. The value that appears the most frequently is this one.
Range:
When the sample maximum and minimum are subtracted, the range of a set of data in statistics is the difference between the greatest and lowest values.
Median:
The median is the value that's exactly in the middle of a dataset when it is ordered.
Thus, the Median will be negative.
Therefore, Statement "B. the median is a negative number" will be correct among these options.
Learn more about Mean here:
https://brainly.com/question/521501
#SPJ1
Complete question:
A set of data contains 10 negative numbers and 4 positive numbers. Which one of these statements must be true?
A. The mean is a negative number.
B. The median is a negative number.
C. The mode is a negative number.
D. The range is a negative number.
Find the cp
Tea set : sp = 1546, profit % = 9%
HELPP PLEASE ITS URGENT!!!!!!!! ¡!! ¡!!!!!!!!!!!!!!!!!!! ¡!!!!!!
Answer: CP = 1418.34
Step-by-step explanation: We've to calculate the cost price (CP)
Selling price (SP) = 1546, Profit% = 9%
According to the formula,
Profit%= [tex]\frac{SP-CP}{CP} * 100[/tex]
9 = [tex]\frac{1546-CP}{CP} *100[/tex]
9*CP = (1546-CP)*100
109CP = 154600
CP = 154600/109
CP= 1418.34
Read more about it:
https://brainly.com/question/22057548
Solve each trigonometric function IN THE INTERVAL [0, 360)
sin 2x − √3 / 2 = 0
The solution of the trigonometric function sin 2x − √3/2 = 0 will be 30°, 60°, 210°, and 240°.
What is the solution to the equation?The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.
The trigonometric equation is given below.
sin 2x − √3/2 = 0
Simplify the equation, then we have
sin 2x − √3/2 = 0
sin 2x = √3/2
sin 2x = sin 60°, sin 120°
2x = 60°, 120°, 420°, 480°
x = 30°, 60°, 210°, 240°
The solution of the trigonometric function sin 2x − √3/2 = 0 will be 30°, 60°, 210°, and 240°.
More about the solution b link is given below.
https://brainly.com/question/545403
#SPJ1
Nicole is selling lemonade at her stand. She charges $0. 75 per pint. Mr. Terry buys 36 quarts; how much money does he owe Nicole?
The money Nicole that he owes by selling the 36 quarts of lemonade is $ 54.
As per the given data, Nicole is selling the lemonade at her stand.
She charges $0.75 per pint.
Mr. Terry buys 36 quarts of lemonade.
Here we have to determine how much money he owes Nicole by selling the 36 quarts of lemonade.
Convert the quantity from quarts to pints.
As we know that 1 quart = 2 pints
1 quart = 2 pints
36 quarts = 2 × 36 pints
36 quarts = 72 pints.
The 36 quarts are equal to 72 pints.
The cost of one pint is $0.75.
We have to find the cost of 72 pints.
1 pint = $0.75
72 pints = ( 0.75 × 72 pints ) $
72 pints = 54 $.
Therefore the money owned by Nicole is $ 54.
For more questions on quarts and pints
https://brainly.com/question/13442515
#SPJ4
What is the percent of increase from 45 to 72?
The percent of increase from 45 to 72 is 60%.
How to find the percent of increase?Using this formula to find the percent of increase
Percent of increase= End value - Start value /Start value
Where:
End value = 72
Start value = 45
Let plug the formula
Percent of increase =(72 - 45) /45
Percent of increase =27 /45 × 100
Percent of increase = 60%
Therefore we can conclude that the percent of increase is 60%.
Learn more about percent of increase here:https://brainly.com/question/11360390
#SPJ1
2/8 4. 5 Homework (Math)
Hi Kennedy, when you submit this form, the owner will be able to see your name and email address.
* Required
1. Some friends go to the store to buy school supplies. Nick spends $4. 89. Riley spends 3 times as
much as Nick. Clay spends $12. 73 more than Riley. How much did Clay spend? *
(1 Point)
Enter your answer
If Nick spends $4.89 and Riley spends 3 times as much as Nick and Clay spends $12.73 more than Riley , then the total amount spent by Clay is $27.4 .
The amount Nick spends to buy School Supplies is = $4.89 ,
the amount spent by Riley is 3 times of amount spent by Nick ,
that means , Riley spent = 3 × 4.89 = $14.67 ,
the amount spent by Clay is $12.73 more than the amount spent by Riley , which means ;
Clay spent is = $14.67 + $12.73 = $27.4 .
Therefore , Clay spent $27.4 to buy school supplies .
The given question is incomplete , the complete question is
Some friends go to the store to buy school supplies. Nick spends $4.89 Riley spends 3 times as much as Nick. Clay spends $12.73 more than Riley. How much did Clay spend ?
Learn more about Amount here
https://brainly.com/question/10794011
#SPJ4
two valleys are sometimes infected with tree rot. suppose valley 1 is infected with probability 35%, valley 2 is infected with probability 60%, and the probability that at least one is infected is 80%. suppose tree rot is observed in valley 2. what is the probability that valley 1 is also infected?
The probability that valley 1 is also infected is 15%
The math term probability is defined as the possibility of an event to happen is equal to the ratio of the number of favorable outcomes and the total number of outcomes.
Here we have know that two valleys are sometimes infected with tree rot.
The probability of rotting valley 1 = 35%
The probability of rotting valley 2 = 60%
And the probability that at least one is infected = 80%
When we convert these values into decimal then we get,
The probability of rotting valley 1 = 0.35
The probability of rotting valley 2 = 0.6
And the probability that at least one is infected = 0.8
Then the probability that valley 1 is also infected is
=> P = 0.35 + 0.6 - 0.8
=> P = 0.15
When we convert it into percentage then we get,
=> P = 15%.
To know more about probability here.
https://brainly.com/question/11234923
#SPJ4
Determine the perimeter of the right triangle shown. Round your answer to the nearest whole number, if necessary.
O 7 Units
O 14 Units
O 25 Units
O 26 Units
Answer: 26 units
Step-by-step explanation:
Let's label the left side as side a, the bottom as side b, and the hypotenuse (the diagonal side) as side c.
As you can see, side a is 8 units, and side b is 7 units. To calculate side c, you need to plug both a and b in to the Pythagoras' theorem, which states that a² + b² = c².
> 8² + 7² = c²
> 64 + 49 = c²
> 113 = c²
> c = 10.63 which would round up to 11.
Now adding up all the sides together, a + b + c = 7 + 8 + 11 = 26 units
tickets number one 1 to 20 are mixed up and then a ticket is drawn at random what's the probability that the ticket drawn at random has a multiple of four or five
The probability that the ticket drawn at random has a multiple of four or five is 2/5.
We have to determine the probability that the ticket drawn at random has a multiple of four or five.
Tickets number 1 to 20 are mixed up and then a ticket is drawn at random.
Total number of tickets = 20
The possible numbers of tickets that are multiple of four or five = 4, 5, 8, 10, 12, 15, 16, 20
So total number of outcome that are multiple of four or five = 8
So, the probability that the ticket drawn at random has a multiple of four or five = Total number of outcome that are multiple of four or five/Total number of tickets
The probability that the ticket drawn at random has a multiple of four or five = 8/20
The probability that the ticket drawn at random has a multiple of four or five = 2/5
To learn more about probability link is here
brainly.com/question/9793303
#SPJ4
In a recent student government election, the ratio of students who voted for the winner to all the students who voted was 0.85. The number of students who voted was 60. How many votes did the winner get?
In a recent student government election, the number of vote of the winner is 51
How to determine the ratioAn ordered pair of numbers a and b, represented as a / b, is a ratio if b is not equal to 0.
In a proportion, two ratios are specified to be equal to one another in an equation.
The number of votes of the winner is calculated by writing the ratio
= number of the students who voted / total number of students
let x be the number of students that voted the winner
85 / 100 = x / 60
100x = 60 * 85
x = 5100 / 100
x = 51
Learn ore about ratio here:
https://brainly.com/question/29595699
#SPJ1
you have a coin which comes heads with probability 1/5 and you toss is 700 times if there are multiple coins in a row we call them a streak what is the expected number of streaks
If there are multiple coins in a row we call them a streak , the expected number of streaks here are 224
Attempt: I interpreted the number of streaks as the number of switch between either H to T or T to H in the sequence + 1.
The problem has a markov chain structure and so we can obtain the following equations, given S(n)
A Markov chain or Markov process is a stochastic model describing a sequence of possible events in which the probability of each event depends only on the state attained in the previous event.
number of strike in sequence with n coins:
S(n|H) = 0.2s(n-1) + 0.8 (1+s(n-1))
S(n|T) = 0.8s(n-1) + 0.2(1+s(n-1))
This implies S(n) = S(n|T)p(T) + S(n|H)p(H)
= S(n-1) + 8/25
Therefore, E[S(700)] = 224.
Learn more about markov chain structure here :
https://brainly.com/question/30046671
#SPJ4
Mr. Snow keeps a list of vocabulary terms that he wants his students to memorize from the textbook.
He began the year with 15 terms on the list. Of the 35 new terms in each chapter, Mr. Snow puts the definitions of 10 terms on the wall and adds the remaining terms to the vocabulary list to be memorized.
.Write an equation in slope-intercept form to represent the situation. Use x for the independent variable and y for the dependent variable. Identify what both variables represent.
The linear function in slope-intercept form that represents the equation is given as follows:
y = 15 + 25x.
The variables are given as follows:
Variable x: number of chapters read.Variable y: number of terms on the list.How to define the linear function?The slope-intercept definition of a linear function is given as follows:
y = mx + b.
For which:
The slope m represents the number of words added to the list for each chapter.The intercept b represents the initial number of words in the list.He began the year with 15 terms on the list, hence the parameter b is given as follows:
b = 15.
Of the 35 new terms in each chapter, Mr. Snow puts the definitions of 10 terms on the wall and adds the remaining terms to the vocabulary list to be memorized, hence the slope m is obtained as follows:
m = 35 - 10
m = 25.
Then the function is:
y = 25x + 15.
More can be learned about linear functions at https://brainly.com/question/24808124
#SPJ1
graph the relation. find the domain and range.
The domain of the relation is 0 ≤ x ≤ 4 and the range of the relation is all real numbers (-∞, ∞)
What is the domain and range of the function?The domain of a function is defined as the set of all the possible input values that are valid for the given function.
The range of a function is defined as the set of all the possible output values that are valid for the given function.
We know that Domain : the set of possible x-values (the "input" values)
And also, we know that Range : the set of y-values (the "output" values)
In the given graph we have attached below, the domain of the relation is 0 ≤ x ≤ 4
The range = all real numbers (-∞, ∞)
Learn more about the domain and range of the function:
brainly.com/question/2264373
#SPJ1
Solve for x:
1/4 |x + 1| ≥ 4
Please show how its done
Answer:
x ≤ - 17 or x ≥ 15
Step-by-step explanation:
[tex]\frac{1}{4}[/tex] | x + 1 | ≥ 4 ( multiply both sides by 4 to clear the fraction )
| x + 1 | ≥ 16
Inequalities of the type | ax + b | ≥ c , have solutions of the form
ax + b ≤ - c or ax + b ≥ c , then
x + 1 ≤ - 16 ( subtract 1 from both sides )
x ≤ - 17
or
x + 1 ≥ 16 ( subtract 1 from both sides )
x ≥ 15
solution is x ≤ - 17 or x ≥ 16
Twenty percent of US adults have some type of mental illness. You randomly select six US adults. Find the
probability that the number of US adults who have some type of mental illness is (a) exactly two, (b) at
least one, and (c) less than three.
This is a Binomial
distribution
a.
b.
C.
a. The probability of exactly two US adults having a mental illness in a sample of six is 0.235904
B. The probability of at least one US adult having a mental illness is >=21
C. The probability of less than three US adults having a mental illness is <=3
How do we find the values of the probabilities?a. The probability of exactly two US adults having a mental illness in a sample of six is given by the binomial probability formula:
P(X = 2) = (6 choose 2) * (0.2)^2 * (0.8)^4 = 0.235904
b. To find the probability of at least one US adult having a mental illness, we need to find the probability of zero or one or two or three or four or five or six US adults having a mental illness.
This can be found by summing the probabilities of each event:
P(X >= 1) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4) + P(X = 5) + P(X = 6)
c. To find the probability of less than three US adults having a mental illness, we need to find the probability of zero or one or two US adults having a mental illness.
P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2)
Note that the binomial probability formula can be used to find the individual probabilities as well.
Therefore, the correct answer is as given above
learn more binomial probability: https://brainly.com/question/9325204
#SPJ1
Convert. Simplify your answer and write it as a proper fraction or as a whole or mixed
number.
? Teaspoons = 7 1/3 tablespoons
Based on the conversion of tablespoon to teaspoon, 7 1/3 tablespoons is equal to 22 teaspoons.
What is a conversion factor?In Science, a conversion factor is a number that is used to convert a number in one set of units to another, either by dividing or multiplying.
Generally speaking, there are three (3) teaspoons in one (1) tablespoon. This ultimately implies that, a proportion or ratio for the conversion of tablespoon to teaspoon would be written as follows;
Conversion:
3 teaspoons (tsp) = 1 tablespoon (tbsp)
X teaspoons (tsp) = 7 1/3 tablespoons (tbsp)
Cross-multiplying, we have:
X teaspoons (tsp) = 7 1/3 × 3
X teaspoons (tsp) = 22/3 × 3
X teaspoons (tsp) = 22 teaspoons.
Read more on conversion factor here: brainly.com/question/28308386
#SPJ1
See screenshot below.
By polar form properties, the product of complex numbers (5 · cos 225° + i 5 · sin 225°) and (2 · cos 135° + i r₂ · sin 135°).
How to multiply complex numbers
In this question we find the case of the product of two complex numbers in rectangular form but including features of polar form (magnitude, direction). Then, we have the following situation:
(r₁ · cos θ₁ + i r₁ · sin θ₁) · (r₂ · cos θ₂ + i r₂ · sin θ₂)
Result can be found easily by transforming the expression into polar form:
(r₁, θ₁) · (r₂, θ₂) = (r₁ · r₂, θ₁ + θ₂)
[r₁ · r₂ · cos (θ₁ + θ₂) + i r₁ · r₂ · sin (θ₁ + θ₂)]
If we know that r₁ = 5, r₂ = 2, θ₁ = 225° and θ₂ = 135°, then the product of the complex number is:
10 · [cos 360° + i sin 360°]
10 · (1 + i 0)
10
To learn more on complex numbers: https://brainly.com/question/10251853
#SPJ1
Dylan invested $6,100 in an account paying an interest rate of 2 % compounded
daily. Violet invested $6,100 in an account paying an interest rate of 2 %
compounded continuously. To the nearest hundredth of a year, how much longer
would it take for Violet's money to triple than for Dylan's money to triple?
Violet's money tripled Dylan's money to triple= 23,249.95.
Dylan invested $6,100 in an account paying an interest rate of 2% compound.
Violet invested $6,100 in an account paying an interest rate of 2%
compound.
The formula for compound amounts is A = P(1 + r/n)^(nt),
where n is the number of compounding periods per year, t is the number of years, P is the initial amount invested and r is the annual interest rate as a decimal fraction.
Here,
A = ($6100)(1 + 0.02/4)^(12*4)
Evaluating this we get:
A = ($6100)(1.005)^48, or
A = ($6100)(`1.2704)
A = $7,749.98
Violet's money to triple than for Dylan's money to triple
=3(A)=3*7749.98=23249.95.
To know more about compounds interest:
https://brainly.com/question/16526890
#SPJ4
What is the model function of this situation? A population of 16 salmon triples every year.
f(x)=ab^x
Step-by-step explanation:
a = 16
b = 3
because only the factor 3 gets repeatedly added every year (x).
the rest (the starting value that gets tripled and then tripled and then tripled ... every year) is constant.
f(x) = 16×3^x
as you know, exponents have the higher priority to multiplications.
if you want to be save you can use brackets like
f(x) = 16×(3^x)
a coin is tossed 300 times and gets heads for 220 times tales for 80 times what is the probability of getting a tails
0.266… is the answer.
I hope this helps even a bit :]