you and your friend are both knitting scarves for charity . you knit 8 rows each minute and have already knitted 10 rows . your friend knits 5 rows each minute and has already knitted 19 rows . when will you both have knitted the same amount of rows ?
After 3 minutes you both have knitted the same amount of rows.
What is a numerical expression?A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.
Given, You knit 8 rows each minute and have already knitted 10 rows.
Your friend knits 5 rows each minute and has already knitted 19 rows.
Assuming t is the time when will you both have knitted the same amount of rows,
8t + 10 = 5t + 19.
8t - 5t = 19 - 10.
3t = 9.
t = 3 minutes.
learn more about numerical expressions here :
https://brainly.com/question/29199574
#SPJ1
you deposit $3000 into a bank account that pays 1.25% annual interest, compounded semi-annually. how much interest does the account earn after 4 years?
To find the amount of interest earned on a bank account after 4 years, use the compound interest formula. After plugging in the values, the account earns approximately $162.89 in interest.
Explanation:To calculate the amount of interest earned on a bank account after 4 years, we need to use the formula for compound interest: A = P(1 + r/n)^(nt) - P. In this case, the initial deposit (P) is $3000, the annual interest rate (r) is 1.25%, compounded semi-annually (n = 2), and the time period (t) is 4 years. Plugging in these values, we get:
A = 3000(1 + 0.0125/2)^(2*4) - 3000
Solving this equation, we find that the account earns approximately $162.89 in interest after 4 years.
Learn more about Bank Account here:https://brainly.com/question/34350506
#SPJ3
look at clock blair arrived a the bus stop at 45 minutes ago what time did blaire arive at the bus stop?
Hey can you please help me posted picture of question
name the shaded region in three equivalent forms 2/3 in to a fraction,decimal, and percent
The function f(t) = 25 sin (pi over 2t) + 10 models the temperature of a periodic chemical reaction where t represents time in hours. What are the maximum and minimum temperatures of the reaction, and how long does the entire cycle take? (5 points)
A. Maximum: 25°; minimum: 10°; period: pi over 2 hours
B. Maximum: 35°; minimum: 35°; period: 8 hours
C. Maximum: 100°; minimum: −15°; period: pi over 2 hours
D. Maximum: 35°; minimum: −15°; period: 4 hours
Answer:
The correct answer is: Option: D
D. Maximum: 35° ; minimum: −15° ; Period: 4 hours
Step-by-step explanation:
We are given a function f(t) as:
[tex]f(t)=25\sin (\dfrac{\pi}{2}t)+10[/tex]
We know that the maximum value of the function is obtained when the sine function is maximum.
i.e. when sine takes the value=1
and the minimum value of the function is obtained when the sine function is minimum.
i.e. when sine takes the value= -1
Hence, the minimum value of the function is:
-25+10= -15
and the maximum value of the function is:
25+10=35
Also the period of the function of the type:
[tex]f(x)=a\sin(bx)+c[/tex]
is:
[tex]Period=\dfrac{2\pi}{b}[/tex]
Hence, here we have: b=π/2
Hence, period is:
[tex]Period=\dfrac{2\pi}{\dfrac{\pi}{2}}\\\\\\Period=4[/tex]
Hence, option: D is the correct answer.
What is the domain of the step function f(x) = ⌈2x⌉ – 1?
The domain of the given step function is:
The set of all the real numbers.
Step-by-step explanation:Ceiling function--
The ceiling function also known as the least integer function is the function which takes the largest value of the integer for a non-integer number which lie between the two integers , and gives the integer itself if the number is integer.
and it is given by:
[tex]f(x)=\left \lceil x \right \rceil[/tex]
(
For example--
if x= 0.5
then f(x)=1 since x lie between 0 and 1
if x= -2.5
Then f(x)= -2
since x lie between -3 and -2.
if x=3
then f(x)=3 )
Also, the function is defined for all real values of x.
i.e. The domain of such a function is: All real numbers.
The function f(x) is given by:
[tex]f(x)=\left \lceil 2x \right \rceil-1[/tex]
Hence, the domain is all the real numbers.
To date, Ty has cumulative earnings of $107,600. This week he is paid $3,000. What's the total amount of social security tax for this week? Assume a rate of 6.2% on $110,100 for social security and 1.45% for Medicare.
A. $186.00
B. $155.00
C. $180.00
D. $57.66
Final answer:
The total Social Security tax for Ty's earnings this week, given his total earnings are now $110,600, is $155.00. This calculation considers the Social Security tax rate of 6.2% up to the income threshold of $110,100. Thus, option B is correct.
Explanation:
The question involves calculating the Social Security tax for Ty's earnings this week. With cumulative earnings to date at $107,600 and an additional $3,000 this week, Ty's total earnings for the year are now $110,600.
Since the Social Security tax rate is 6.2% and applies only up to an income of $110,100, we will only apply the tax rate to the $110,100 threshold, not the full $110,600. The week's Social Security tax is then:
0.062 × $110,100 = $6,826.20 (for the entire year so far)
Since we only need to find out the tax for this week's earnings, we need to calculate the tax that was already paid on the first $107,600:
0.062 × $107,600 = $6,671.20
The additional Social Security tax for this week is the difference between the two:
$6,826.20 - $6,671.20 = $155.00
Therefore, the total Social Security tax for this week is $155.00, which corresponds to option B.
The total amount of Social Security tax for Ty this week is $155.00. Hence, the correct option is B.
To calculate the total amount of Social Security tax for Ty this week, we must apply the 6.2% rate to his weekly pay of $3,000. However, since his cumulative earnings to date are $107,600 and the Social Security tax applies only up to $110,100, we need to determine how much of his $3,000 weekly salary is subject to this tax.
To find this, we subtract his current earnings from the maximum amount that is subject to Social Security tax: $110,100 - $107,600 = $2,500. Only $2,500 of Ty's $3,000 salary is taxable for Social Security purposes since he has reached the threshold beyond which Social Security tax is not levied on additional income.
Therefore, this week's Social Security tax is 6.2% of $2,500, which equals $155.00. As the rate for Medicare does not cap, the full $3,000 is subject to the Medicare tax at a rate of 1.45%, leading to a Medicare tax amount of $43.50. However, as the question only asks for the Social Security tax, the answer is B. $155.00.
The sum of first three terms of a finite geometric series is -7/10 and their product is -1/125. [Hint: Use a/r, a, and ar to represent the first three terms, respectively.] The three number are __, __, and __
Answer:
2r²-5r+2=0
a=2
b=-5
c=2
Step-by-step explanation:
SOMEONE PLEASE PLEASE HELP ASAP
Expression for calculation divided 10 in half and subtract from 50 divided into fifth
Find the measure of each angle
What proportion is more than 2.0 standard deviations from the mean?
Final answer:
The proportion of data more than 2.0 standard deviations away from the mean in a normal distribution is less than 5%, consisting of 2.5% in the upper tail and 2.5% in the lower tail.
Explanation:
The proportion of values more than 2.0 standard deviations from the mean in a normal distribution is less than 5% because according to the empirical rule, 95% of the data falls within 2 standard deviations of the mean. Therefore, if you are looking at a normal distribution and you want to know the proportion of data that lies beyond 2 standard deviations from the mean, you would subtract 95% from 100%, which is 5%. This is then split between both tails of the distribution, so you have 2.5% in the upper tail and 2.5% in the lower tail, for a total of 5% more than 2 standard deviations away from the mean.
The solid shown are composed of prisms and half cylinders. Find the volume of the solid. Round to the nearest whole number.
Hey can you please help me posted picture of question
please help.............
Find the slope and y-intercept fotv
the volume of a rectangle is 672 inches. the hieght of the prism is 8 incheswhich measurement in inches could be the dimensions of the base?explain and justify your answer
The answer is 6 inches
Sierra's swimming lessons last 1 hour 20 minutes.she finished her lesson at 10:50 am.at what time did her lesson start?
The time at which her lesson start is 9:30 am.
How are number of people to time needed to complete a task related?More people to do a task means less time it will take.
Less people to do a task means more time it will take.
Thus, they are inversely related.
If x men take y time for a work,
We can define a constant as "Manpower" needed for doing that specific work.
Let we define:
Manpower needed for a work = y + y + y + .. + y = Time per man × count of men
Manpower needed for a work = xy
We are given that;
Time= 1 hour 20 minutes
Now,
To find the time when Sierra’s lesson started, you need to subtract the duration of her lesson from the time when she finished. You can do this by subtracting the minutes and then the hours.
First, subtract 20 minutes from 10:50 am. To do this, you can take away 10 minutes to get 10:40 am and then take away another 10 minutes to get 10:30 am.
Next, subtract 1 hour from 10:30 am. To do this, you can take away 60 minutes or simply reduce the hour by 1. Either way, you get 9:30 am.
Therefore, by work and time the answer will be 9:30 am.
Learn more about work and time here:
https://brainly.com/question/1063042
#SPJ2
There are 3 teams of 18 employees working today. Company
policy says that we need to have 1 supervisor for every 8 employees on the floor. We need ....
Final answer:
The total number of employees working is 54. According to company policy requiring 1 supervisor for every 8 employees, 7 supervisors are needed to comply with this policy.
Explanation:
To find how many supervisors are required, we first need to know the total number of employees working. Since there are 3 teams of 18 employees, the total number of employees is 3 teams * 18 employees per team = 54 employees. Company policy requires 1 supervisor for every 8 employees. Therefore, we divide the total number of employees by the supervisor to employee ratio: 54 employees / 8 employees per supervisor = 6.75. Since we cannot have a fraction of a supervisor, we round up to the next whole number, making it 7 supervisors needed in total.
So, the supervisor would say: "We need 7 supervisors working tonight so we should be OK."
Consider the following grsph of a quadratic function.
Find the sum of these polynomials.
(x2 – x + 7) + (9x2 + 6) =
Answer:B
Step-by-step explanation:
Express the number as a ratio of integers. 3.469 = 3.469469469
hey can you please help me posted picture of question
What is 8640minutes in days?(remember ,there are 60minutes in an hour and 24 in a day
A car rental agency charges $50 per week plus $0.50 per mile to rent a car. What is the weekly cost to rent the car, f, as a function of the number of miles driven during the week, x. How many miles did you drive during the week if the weekly cost to rent the car was $100?
The weekly cost to rent the car, f, as a function of the number of miles driven during the week, x, is f = 50 + 0.50x. If the weekly cost to rent the car was $100, the number of miles driven during the week is 200 miles.
Explanation:The weekly cost to rent the car, f, as a function of the number of miles driven during the week, x, can be calculated using the formula f = 50 + 0.50x. This is because the car rental agency charges $50 per week plus $0.50 per mile. To find the number of miles driven during the week if the weekly cost to rent the car was $100, we can substitute f = 100 into the formula and solve for x:
100 = 50 + 0.50x
50 = 0.50x
x = 100/0.50
x = 200
Therefore, the number of miles driven during the week is 200 miles.
Learn more about Calculating weekly cost and miles driven here:https://brainly.com/question/34287171
#SPJ3
A particular model of walkie talkie can broadcast in a circular .the radius of the broadcast area is 10,000 feet. find the area of the circle to the nearest square foot use 3.14 for pi
icole wants to buy a pair of jeans. The original cost of the jeans is $42.50, and the markup is 10 percent. How much will she have to pay for the jeans? $44.50 $46.75 $52.50
For the data set below, compute the standard deviation. Round to the nearest hundredth. 2, 3, 5, 8 2.03 2.20 2.6 4.5
To calculate the standard deviation, compute the mean, subtract it from each data point, square the results, average those and take the square root. Round to the nearest hundredth, and for one standard deviation below the mean, subtract the standard deviation from the mean.
Explanation:To calculate the standard deviation of a data set, you can use a calculator or a computer. The formula for standard deviation is the square root of the variance, which is the average of the squared differences between each data point and the mean of the data set. Let's compute the mean and standard deviation of the provided data set: 2, 3, 5, 8, 2.03, 2.20, 2.6, 4.5.
Calculate the mean (average) of the data.Subtract the mean from each data point and square the result.Find the average of these squared differences.Take the square root of this average to get the standard deviation.
You may round the standard deviation to the nearest hundredth as requested.
To find the value that is one standard deviation below the mean, subtract the standard deviation from the mean.
need help to do this