Answer:
55 + .45m
Step-by-step explanation:
The total cost of renting the car is the fixed cost plus the cost per mile
55 + .45m where m is the number of miles
y = 0.45m + 55 [equation]
m [number of miles] = 100
Step-by-step explanation:
Equation:
y = mx + b
y = 0.45m (# of miles) + 55 (daily fee)
To solve for m, the number of miles:
100 = 0.45m + 55
Subtract 55 from each side.
45 = 0.45m
\(\frac{45}{0.45}\) =mm = 100The mortality rate from heart attack can be modelled by the relation M = 88.8(0.9418)', where M is the number of deaths per 100 000 people and is the number of years since 1998. What is the initial mortality rate in 1998?
The initial mortality rate in 1998 per 100,000 people is :
88.8 deaths
To find the initial mortality rate in 1998, you'll need to use the given relation :
M = 88.8(0.9418)^t, where M is the number of deaths per 100,000 people, and t is the number of years since 1998.
Identify the value of t for 1998. Since 1998 is the starting year, t = 0.
Substitute the value of t into the equation. M = 88.8(0.9418)^0
Calculate M. Since any number raised to the power of 0 is 1, the equation becomes M = 88.8(1), which simplifies to M = 88.8.
So, the initial mortality rate in 1998 is 88.8 deaths per 100,000 people.
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under what circumstances can a very small treatment effect still be significant? group of answer choices if the standard error of m (s m) is very large if the sample size (n) is very large all of the other factors are likely to produce a significant result. if the sample standard deviation (s) is very large
A minor treatment effect may nonetheless be significant under certain circumstances if the sample size is large and the sample variance is low.
What is the standard error, and sample size?The standard error calculates the discrepancy between a sample's estimate and the actual value for the population. Therefore, the standard error should be smaller the better. In fact, a standard error of zero or extremely close to it would indicate that the projected value and the actual value are identical.Sample size determination is the process of deciding how many observations or replicates to include in a statistical sample. The sample size is an important consideration in any empirical study that aims to infer information about a population from a sample.Therefore, a minor treatment effect may nonetheless be significant under certain circumstances if the sample size is large and the sample variance is low.
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Which equation has a graph that is parallel to the graph of 2x − y = −1?
A. 2x + y = 8 B. y = −12x + 3 C. y − 1 = 2(x − 3) D. y = −2x − 1
How i can answer this question, NO LINKS, if you answer correctly i will give u brainliest!
Answer: A. they will have too much butter
Step-by-step explanation: to much
using a 0-10 scale, a health psychologist reports that the sample mean pain rating is 7 with a 95% confidence interval ranging between 6.5 to 7.5. which of the following is true? group of answer choices 95% of all random samples would give pain means between 6.5 and 7.5 the true pain mean in the population definitely falls between 6.5 and 7.5 on average, random samples of participants will give estimates that are .5 points from the true pain mean in the population there is a 95% probability that the interval from 6.5 and 7.5 contains the true mean pain rating in the population
The 95% confidence interval of 6.5 to 7.5 indicates that there is a 95% probability that the true mean pain rating in the population lies within this range.
The 95% confidence interval of 6.5 to 7.5 indicates that there is a 95% probability that the true mean pain rating in the population lies within this range. This means that if the same sample of participants were randomly selected and tested multiple times, 95% of the time the mean pain rating would fall between 6.5 and 7.5. It does not necessarily mean that the true mean pain rating in the population is definitely between 6.5 and 7.5 or that the mean pain rating would be exactly .5 points away from the true mean pain rating in the population. The confidence interval is an estimate of the true mean pain rating in the population, but it is not an exact value. This means that there is an inherent level of uncertainty associated with the confidence interval and that it can not be used to make definitive statements about the true mean pain rating in the population.
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robin was given a $40 monthly allowance. she wants to go to the movies as many times as possible and have at least %12.50 left at the end of the month to go to a concert. a movie ticket costs $5. write and solve an inequality to determine how many times robin can go to the movies this month. then interpret the solution.
Answer: ≤7 tickets.
Step-by-step explanation:
Robin can go to the movies less than or equal to 7 times this month.
Robin was given a $40 monthly allowance. She wanted to save 12.50% of that $40. 12.50% of 40 is 5. (X/40 = 12.50/100. Cross multiply. X=5)
Each movie ticket is $5. In order to save $5 or 12.50%, Robin can only buy $35 dollars worth of tickets (or 7 tickets).
So, the inequality is ≤7.
The population of a southern city follows the exponential law. Use this information to answer parts a and b. (a) If N is the population of the city and t is the time in years, express N as a function of t. N(t)=N 0
e kt
(Type an expression using t as the variable and in terms of e.) (b) If the population doubled in size over 23 months and the current population is 20,000 , what will the population be 5 years from now? The population will be approximately people. (Do not round until the final answer. Then round to the nearest whole number as needed.)
The expression for N(t) in terms of t and e is N(t) = N0 * e^(kt). Therefore, the population will be approximately 35,192 people in 5 years.
a)The exponential law states that if a population has a fixed growth rate "r," its size after a period of "t" years can be calculated using the following formula:
N(t) = N0 * e^(rt)
Here, the initial population is N0. We are also given that the population follows the exponential law.
Hence we can say that the population of a southern city can be expressed as N(t) = N0 * e^(kt).
Thus, we can say that the expression for N(t) in terms of t and e is N(t) = N0 * e^(kt).
b)Given that the population doubled in size over 23 months, the growth rate "k" can be calculated as follows:
20000 * e^(k * 23/12) = 40000e^(k * 23/12) = 2k * 23/12 = ln(2)k = ln(2)/(23/12)k ≈ 0.4021
Substituting the value of "k" in the expression for N(t), we get: N(t) = 20000 * e^(0.4021t)
After 5 years, the population will be: N(5) = 20000 * e^(0.4021 * 5)≈ 35,192.
Therefore, the population will be approximately 35,192 people in 5 years.
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Help! 30 Points! Find x
Answer:
do math
Step-by-step explanation:
Oleg is training for a triathlon. One day, he jogged for 2 hours at x miles per hour. Then he bicycled for 2 hours at y miles per hour. Finally, he swam a distance of 2 miles. The total number of miles did not exceed 30 miles.
What is the greatest possible speed that Oleg could have bicycled that day?
The greatest possible speed that Oleg could have bicycled that day is 13 miles per hour.
How did we get the value?Let's call the total distance that Oleg jogged z. Then z = 2x.
The total distance that Oleg bicycled was 30 - z - 2. Let's call this distance w. Then w = 30 - 2x - 2.
Since Oleg bicycled for 2 hours, the speed that he bicycled was w / 2. So, w / 2 = y.
Substituting the expressions for z and w, we have:
y = (30 - 2x - 2) / 2.
Since y must be the greatest possible speed that Oleg could have bicycled that day, x must be the smallest possible value.
Since Oleg jogged for 2 hours, the minimum value of x is 2 / 2 = 1.
Substituting x = 1 into the expression for y, we have:
y = (30 - 2 * 1 - 2) / 2 = (26) / 2 = 13.
So, the greatest possible speed that Oleg could have bicycled that day is 13 miles per hour.
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What is the perimeter,in centimeters of triangle QRS?
Answer: 60
Step-by-step explanation:
You have to use Pythagorean Theorem because the other side is not listed of the triangle
Pythagorean Theorem: a² + b² = c²
a² + 20² = 25²
a² + 400 = 625
625-400 = a²
a² = 225
Find the square root of 225 to find the missing length
\(\sqrt{225}\) = 15 (this is the missing length for QS
To find the perimeter, add all the sides...
15 + 20 +25 = 60
John works Monday to Friday. He buys his lunch on his way to work. Each day John buys a sandwich, a bottle of water and a bag of crisps. John thinks he will save more than £7.50 a week if he buys his lunch each day from shop B instead of shop A. Is John correct?
Complete question
Shop A _________________ shop B £3
Any sandwich - £2.85 ___ sandwich, water crisp
A bottle of water - 60p
A bag of crisp - 85p
Answer:
£6.50, John is incorrect
Step-by-step explanation:
Number of working days = 5 = number of days meal is purchased
Total cost per meal, shop A :
£(2.85 + 0.60 + 0.85) = £4.3
Total cost for the week = 4.3 * 5 = £21.50
Total cost per meal cost Shop B = £3
Total cost for the week = 3 * 5 = £15
Difference :
£21.50 - £15 = £6.50
Hence, Amount John saves by buying from shop B is £6.50
Numbe
Bart and Sam played a game in which each player earns or loses points in each turn. A player's total score after two turns is the sum of his points earned or lost. The player with the greater score after two turns wins. Bart earned 23 points and lost 60 points. Sam earned 55 points and lost 85 points. Which person won the game? Explain.
DON'T HESITATE TO ASK FOR FURTHER EXPLANATION.
I HOPE IT HELPED
Solve the simultaneous equation
2x-5y=9
3x+4y=2
Answer/Step-by-step explanation:
2x-5y=9
Add 5y to both sides of the equation.
2x=9+5y
Divide each term by 2 and simplify.
Divide each term in 2x=9+5y by 2
\(\frac{2x}{2} =\frac{9}{2} +\frac{5y}{2}\)
Cancel the common factor of 2.
Divide x by 1.
\(x=\frac{9}{2} +\frac{5y}{2}\)
\(y=\frac{-9}{5} +\frac{2x}{5}\)
----------------------------------------------------------------------------------------------------------------
3x+4y=2
Add 4y to both sides of the equation
3x=2+4y
Divide each term by 3 and simplify.
Divide each term in 3x=2+4y by 3.
\(\frac{3x}{3} =\frac{2}{3} +\frac{4y}{3}\)
Cancel the common factor of 3.
Divide x by 1.
\(x=\frac{2}{3} +\frac{4y}{3}\)
\(y=\frac{-1}{2} +\frac{3x}{4}\)
i need help with good writing
Can y’all help this whole thing btw I’m giving 20 points
(a) The expression for the width of the rectangle is 7x + 1.
(b) The expression for the perimeter of the rectangle is 14x + 14.
(c) when x = 1/2, the perimeter of the rectangle is 21 in
How to find an expression for the width of the rectangle?
The area of a rectangle is given by the formula:
A = L × W
where L and W are the length and width of the rectangle respectively
(a) Since A = 42x + 6 sq inches and L = 6 in. We have:
42x + 6 = 6 × W
42x + 6 = 6W
6W = 42x + 6 (divide through by 6)
W = 7x + 1 in
Thus, the expression for the width of the rectangle is 7x + 1
(b) The expression for the perimeter of the rectangle
The perimeter of a rectangle is given by the formula:
P = 2(L + W)
P = 2(6 + 7x + 1)
P = 2(7 + 7x)
P = 14x + 14 in
(c) when x = 1/2
P = 14x + 14
P = 14×(1/2) + 14
P = 7 + 14
P = 21 in
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what is 6 times 3 plus 8 minus 1 and then divided by 8
Answer:
25.875
Step-by-step explanation:
6*3+8-1/8
18 + 8 - 1/8
25.875
Answer by 11:59 today!!!
Answer:
x = 30
Step-by-step explanation:
These angles are all supplementary (they all add up to 180) so:
x + 3x + 2x = 180
6x = 180
x = 30
a company issues 7%, 7-year bonds with a par value of $170,000 on january 1 at a price of $179,602, when the market rate of interest was 6%. the bonds pay interest semiannually. the amount of each semiannual interest payment is: multiple choice $5,950. $5,100. $10,200. $0. $11,900.
The amount of each semi-annual interest payment on the bond is $5,100 (second option)
What is the semi-annual interest payment?A bond is a debt instrument that is used by companies or the government to raise capital needed for its operation. A person who buys a bond is known as a bondholder.
A bondholder is entitled to regular interest payment. The interest paid to the bondholder is a function of the par value of the bond and the market interest rate. At the maturity of the bond, the bondholder is paid back the par value of the bond.
Interest payment = par value of the bond x interest rate x (1.number of times the interest is paid)
Interest payment = $170,000 x 0.06 x 1/2
Interest payment = $5,100
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If 4x-4t=-10 is a true equation, what would be the value of 4x-4y+9?
Answer:
uhh... that is impossible to know since we don't know the value 'y'
Step-by-step explanation:
For function lim h(x) = - inf x = c-and lim h(x) = inf x = c+. Which statement describes the existence of an asymptote at c?
There must be a vertical asymptote at x = c.
There must be a horizontal asymptote at y = c.
There is no asymptote at c because the one-sided limits do not exist.
There is no asymptote at c because the one-sided limits are not equivalent.
Answer:
A
Step-by-step explanation:
Given that lim h(x) = -inf as x = c- and lim h(x) = inf as x = c+, the statement that best describes the existence of an asymptote at c is "There must be a vertical asymptote at x = c." Therefore, the correct option is option 1.
The reasoning for this conclusion is as follows:
1. The limit of h(x) approaches negative infinity as x approaches c from the left (c-), indicating that the function becomes increasingly large in the negative direction.
2. The limit of h(x) approaches positive infinity as x approaches c from the right (c+), indicating that the function becomes increasingly large in the positive direction.
3. Since the function exhibits extreme behavior on both sides of x = c, there must be a vertical asymptote at x = c, which is a line where the function is undefined and the values of the function approach infinity as x approaches the asymptote.
Hence, the correct answer is option 1: There must be a vertical asymptote at x = c.
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What is the probability that a randomly selected person is a woman given that they own a pet
Answer:
lmk if i am incorrect
Step-by-step explanation:
78/100 is .78
there is a 78 percent chance that a woman has a pet
Two more than a certain number is 15 less than the product of ⅞ and the number.
Answer:
let the number = x
two more than the number = ( x + 2 )
product of the number and ⅞ = ⅞x
if you add 15 to ( x + 2 ) the result will ⅞x
( x + 2 ) + 15 = ⅞x
8x + 16 + 120 = 7x
x = -136
Step-by-step explanation:
Please quick, mark brainy and 20 points
The answer is d
because you're waiting too long.
Answer:
0.81,74%,5/8,31/50
Step-by-step explanation:
74% means 74/100 which equals to 0.74, and 5/8 is 0.625, and lastly 32/50 is 0.62 so it leaves us with 0.81 as the greatest so we can start ordering them
0.81,74%(0.74),5/8(0.625), 31/50(0.62)
An angle measures 46°. What is the measure of its complement?
(b) An angle measures 82°. What is the measure of its supplement?
Answer:
The complement of 46° = 44°
The supplement of 82° = 98°
Step-by-step explanation:
Complement means 90° - the angle (46°).
So, 90° - 46° = 44°
Supplement means 180° - the angle (82°)
So, 180° - 82° = 98°
The complement of 46° = 44°
The supplement of 82° = 98°
Complementary anglesComplementary angles are two angles that have a sum of 90°.
Supplementary anglesSupplementary angles are two angles that have a sum of 180°.
According to the question
a. An angle measures 46°.
The measure of its complement :
The meaning of complementary angle is two angles that add up to 90 degrees.
Complementary angles = sum of two angles = 90 degrees.
x° = y° + z°
90° = y° + z°
Given y° = 46°
z° = 90° - y°
z° = 90° - 46°
z° = 44°
The measure of its complement is 44°.
b. An angle measures 82°.
The meaning of supplementary angle is two angles that add up to 180 degrees.
Supplementary angles = sum of two angles = 180 degrees.
a° = b° + c°
180° = b° + c°
Given b° = 82°
c° = 180° - b°
z° = 180° - 82°
z° = 98°
The measure of its supplement is 98°.
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A certain freely falling object requires 1.20 s to travel the last 24.0 m before it hits the ground. From what height above the qround did it fall? Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. m
The object fell from a height of approximately 7.057 meters above the ground.
We can solve this problem using the equations of motion for a freely falling object. The equation we’ll use is:
H = (1/2) * g * t^2
Where h is the initial height, g is the acceleration due to gravity (approximately 9.8 m/s^2), and t is the time taken to travel the last distance. Rearranging the equation, we get:
H = (24.0 m) + (1/2) * (9.8 m/s^2) * (1.20 s)^2
Calculating this expression, we find that h is approximately 7.057 meters. Therefore, the object fell from a height of approximately 7.057 meters above the ground.
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PLEASE HELP!!
Find the area of the triangle below
Step-by-step explanation:
I got 47.5 for this, not sure if its right though.
travis rode his bike 12 miles/hour for 0.75 hour. heidi rode her bike 11 miles/hour for 0.8 hour.
who rode faster and how far did that person ride?
Answer/Step-by-step explanation:
Travis =Divide 12/0.75 = 16
Heidi = Divide 11/0.8=13.75
16-13.75=2.25
Hence, Heidi Drove faster and faster by 2.25
Answer: Travis, he rode 9 miles
Step-by-step explanation: This was my answer on my end.
Shares of Sarah Corporation pay an annual dividend of $1.25, D₁.
This dividend grows at a rate of 4% per year. If the shares trade
at $22, what is the cost of common equity?
The dividend discount model calculates the cost of common equity based on the present value of expected future dividends .the cost of common equity is 9.68% (rounded to two decimal places)
The cost of common equity can be calculated using the dividend discount model. The dividend discount model is a technique that values the stock price based on the present value of expected future dividends. The formula for the dividend discount model is:
\($$P_0 = \frac{D_1}{r-g}$$\)
where P0 is the current stock price, D1 is the expected dividend for next year, r is the required rate of return, and g is the dividend growth rate. To calculate the cost of common equity, we need to solve for r.
Given:Shares of Sarah Corporation pay an annual dividend of $1.25, D1.This dividend grows at a rate of 4% per year.If the shares trade at $22, what is the cost of common equity?Solution:From the given information,
D1 = $1.25, g = 4%, and P0 = $22.Substituting the values into the dividend discount model formula, we get:\($$22 = \frac{1.25}{r - 0.04}$$\)
Multiplying both sides by r - 0.04, we get:
\($$22(r - 0.04) = 1.25$$$$22r - 0.88\)
\(1.25$$$$22r = 2.13$$$$r\)
\(= \frac{2.13}{22}$$$$r = 0.0968$$\)
Therefore, the cost of common equity is 9.68% (rounded to two decimal places).
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CAN SOMEONE PLEASE CHECK MY ANSWER!!
Answer:
Yesss, that's correct!
Step-by-step explanation:
Good luck!!!!
I NEED THIS NOW PLEASE SOMEONE GIVE ME A CORRECT AWNSER
Answer:
25
Step-by-step explanation: