# 300 reduced by twice my age is 192

QUESTION POSTED AT 15/01/2020 - 03:11 AM

I think its done like this:

300 minus 192 is 108

108 divided by 2 is 54

## Related questions

### The value of a car is inversely proportional to age. If a car is worth 8100 when it is 6 years old, how old will it be when it is worth 5400?

8100/6 = 5400/x
cross multiply
8100x = 32400
x = 32400/8100
x = 4......4 years old

ANSWERED AT 29/01/2020 - 05:38 PM

QUESTION POSTED AT 29/01/2020 - 05:38 PM

### Corinne has a job selling magazines. She earns $7.50 per hour plus 20% of the total amount of her sales. She also gets an allowance of$40 per week for gas. She knows her weekly earnings can be shown using the following expression: 7.50h + 0.20s + 40 Part A: Identify a coefficient, a variable, and a constant in this expression. (3 points) Part B: If Corinne works for 25 hours and sells $300 in magazines, how much does she earn for the week? Show your work to receive full credit. (4 points) Part C: If Corinne gets a raise and begins earning$9 per hour, would the coefficient, variable, or constant in the equation change?

A. variable is an unknown number substituted in by a letter, such as h or s
coefficient is the number multiplied by the variable.....7n....coefficient is 7
constant is just a number with no variables attached.
7.50h + 0.20s + 40.....coefficient is 7.50 or 0.20....variable is h or         s....constant is 40

B. 7.50h + 0.20s + 40 = her pay for the week
she works 25 hrs....so sub in 25 for h....she sells 300....so sub in 300 for      s. ---- 7.50(25) + 0.20(300) + 40 = 287.50 <== her weekly pay

C. if she made 9 per hr instead of 7.50, the coefficient would change.
It would be 9.00h + 0.20s + 40

ANSWERED AT 29/01/2020 - 05:24 PM

QUESTION POSTED AT 29/01/2020 - 05:24 PM

### ON A GRAPH WITH Y-VALUES RANGING FROM 1,010,020 TO 9,682,192, WHAT IS A REASONABLE SCALE TO USE ON A Y-AXIS WITH 10 TICK MARKS?

1: 1,000,000

Then you mark points 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 on the y-axis.

The origin is 0
1 is equivalent to 1,000,000
2 is 2,000,000
3 is 3,000,000 ...

and so on, until 10 which is 10,000,000

ANSWERED AT 29/01/2020 - 05:21 PM

QUESTION POSTED AT 29/01/2020 - 05:21 PM

### A biologist took a count of the number of fish in a particular lake and recounted the lake’s population of fish each of the next six weeks. Week 0 1 2 3 4 5 6 Population 350 353 382 437 518 625 758 Find a quadratic function that models the data as a function of x, the number of weeks. Use the model to estimate the number of fish at the lake on week 8. (1 point) •P(x) = 13x2 – 10x + 350; 917 fish •P(x) = 13x2 – 10x + 350; 1,102 fish •P(x) = 18x2 + 10x + 300; 1,252 fish •P(x) = 18x2 + 10x + 300; 1,532 fish

P(x) = 13x² – 10x + 350; 1,102 fish

Explanation:

I plotted this data in a graphing calculator. The screenshot is attached. You can see the curve of the parabola in the graph. I then ran the quadratic regression; again, the screenshot is attached. It lists the values of a, b and c for the equation y = ax²+bx+c.

ANSWERED AT 29/01/2020 - 04:37 PM

QUESTION POSTED AT 29/01/2020 - 04:37 PM

### The function N(t)=300/(1+299e^-0.36t) describes the spread of a rumor among a group of people who have heard the rumor, and (t) is measured in minutes since the rumor was started. Which of the following statements are true? a. The rate at which the rumor spreads speeds up over time. b. Initially, only one person had heard the rumor. c. It will take approx. 14 mins for 100 people to hear the rumor. d. There are 299 people in the enclosed space.

A ) The rate at which rumor spreads speed up over time. If t increases, also N(t) increases, because 300 is divided by the smaller number.( Correct )B ) 1 = 300 / ( 1 + 299 · e^(-0.36 · 0 ) ) 1 = 300 / ( 1 + 299 · 1 ) 1 = 300 / 3001 = 1  ( Correct )C ) 100 = 300 / ( 1 + 299 · e^(-0.36 · 14 ) )100 = 300 / ( 1 + 299 · 1/154.47 )100 = 300 / 2.93565100 ≈ 102.192        ( Correct ) - approx. 14 minutes
D ) N = 300 / ( 1 + 299 · e^(-∞) )N = 300 / ( 1 + 299 · 0 ) N = 300 / 1 = 300299 people are enclosed space ( Not correct )Answer:True statements are: A )B )  and  C ) .

ANSWERED AT 29/01/2020 - 04:36 PM

QUESTION POSTED AT 29/01/2020 - 04:36 PM

### P = $300 r = 7% t = 2 What is i? A)$4.20 B) $42.00 C)$420.00

To answer the question, I assume that the investment has a simple interest. The interest is calculated by the equation,
i = P x r x t
Substitute the given values,
i = ($300) x 0.07 x 2 The value of i is$42. Thus, the answer is letter B. $42.00. ANSWERED AT 29/01/2020 - 04:36 PM QUESTION POSTED AT 29/01/2020 - 04:36 PM ### How does the volume of a cone change when the radius is quadrupled and the height id reduced to 1/5 of the original size? The volume (V) of the cone is one-third of the product of its height (h) and area (A). V = A x h = πr²h Now, if the radius is quadrupled and the height is reduced to 1/5, the equation will be, V2 = π(4r)²(1/5 h) = π(3.2)r²h Thus, the second volume would be 3.2 time the first volume. ANSWERED AT 29/01/2020 - 04:29 PM QUESTION POSTED AT 29/01/2020 - 04:29 PM ### My sister is 4 years older than i am. the sum of our ages is 22. find our ages You are 9 years old and your sister is 13. ANSWERED AT 29/01/2020 - 04:27 PM QUESTION POSTED AT 29/01/2020 - 04:27 PM ### Under which conditions do you expect helium gas to deviate most from ideal behavior? 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Since, there are 100 available bracelets, the final inequality is, 60 ≤ x ≤ 100 ANSWERED AT 29/01/2020 - 03:55 PM QUESTION POSTED AT 29/01/2020 - 03:55 PM ### Which events changed Europe and Asia during the late Middle Ages?. . Choose all answers that are correct.. . A.. Chinese emperors made opening the doors to greater trade and contact with foreigners their highest priority.. . B.. Famine and plague devastated Europe's population.. . C.. Mongol rule weakened across their vast empire.. . D.. England and France fought a series of related conflicts which became known as the Hundred Years’ War.. . E.. Wars between Christians and Muslims resulted in the expansion of Christianity and European empires. Answer: Options B, C and D. Step-by-step explanation: Considering the late middle ages to be the 14th and 15th centuries, the choices are as follows: B - Famine and plague devastated Europe's population. The time was termed as black death period that killed nearly 25 million people in Europe. C - Mongol rule weakened across their vast empire. D - England and France fought a series of related conflicts which became known as the Hundred Years' War. This war lasted for 116 years. ANSWERED AT 29/01/2020 - 03:50 PM QUESTION POSTED AT 29/01/2020 - 03:50 PM ### The heights of american men aged 18 to 24 are approximately normally distributed with a mean of 68 inches and standard deviation of 2.5 inches. Half of all young men are shorter than? how do I figure this out??? The given says the height distribution is normally distributed with the mean height equal to 68 inches. In this case, the bell-shaped curve has a vertical symmetry at 68 inches. This means, half of the mean exceeds 68 inches while the other half has height below 68 inches. ANSWERED AT 29/01/2020 - 03:47 PM QUESTION POSTED AT 29/01/2020 - 03:47 PM ### You are driving away from home at a constant velocity of 100 km per hour. The first landmark you see is your favorite restaurant which happens to be 10 km from your house. Which of the following sequences describes the distances you cover at intervals of one hour, starting when you pass the restaurant? A. 100, 200, 300, 400, 500, ... B. 10, 110, 210, 310, 410, ... C. 10, 100, 200, 300, 400, ... D. 15, 30, 60, 120, 240, ... E. 20, 30, 40, 50, 60, ... You add 100km from the 10km which acts as a starting point; 10, 110, 210, 310, 410, ANSWERED AT 29/01/2020 - 03:42 PM QUESTION POSTED AT 29/01/2020 - 03:42 PM ### If a gas-filled balloon rises 40 feet in the 1st minute, 60 feet in the 2nd minute, and 80 feet in the 3rd minute, how many feet will the balloon rise during the 15th minute? A. 300 feet B. 320 feet C. 340 feet D. 360 feet E. 380 feet The distance traveled by the balloon in every minute makes an arithmetic sequence with a first term equal to 40 ft and common difference equal to 20. The nth term of an arithmetic sequence is calculated by, an = a1 + (n - 1) x d Substituting, an = 40 + (15 - 1) x 20 = 320 Thus, the answer is letter B. 320 feet. ANSWERED AT 29/01/2020 - 03:39 PM QUESTION POSTED AT 29/01/2020 - 03:39 PM ### 1) How have human factors contributed to climate change, and what evidence supports these factors? 2) How have nonhuman factors contributed to climate change, and what evidence supports these factors? 3) What can we do to reduce the human impact on climate change? Develop at least three practical strategies. Human factors contributed to climate change through the usage of CFC's common in sprays, aerosols, refrigerant in air conditioners and other manufacturing industries that thins out the ozone layer thereby lessenign the protection from the sun rays. CO2 charged form The non-human factors are volcanic eruptions, solar output and heat generating natural processes. ways to reduce human impact are (1) reduce the use of sprays, aerosols esp. with CFCs; (2) become energy efficient and (3) reducing your wastes. ANSWERED AT 29/01/2020 - 03:00 PM QUESTION POSTED AT 29/01/2020 - 03:00 PM ### A boy is 17 years old and his sister is twice as old. when the boy is 23 years old what will be the age of his sister? Boy = 17 years. Sister = 2*17 = 34 years. When the boy is 23, that is 17 + 6 = 23, in 6 years time. The sister will be: 34 + 6 = 40 years old. ANSWERED AT 29/01/2020 - 02:58 PM QUESTION POSTED AT 29/01/2020 - 02:58 PM ### Nina is 10 years younger than Deepak. Deepak is 3 times as old as Nina. Which system of equations can be used to find d, Deepak's age, and n, Nina's age? d = n + 10 d = 3n d = n − 10 d = 3n d = n + 10 n = 3d d = n − 10 n = 3d D = 3n n = d - 10.....d = n + 10 ANSWERED AT 29/01/2020 - 02:47 PM QUESTION POSTED AT 29/01/2020 - 02:47 PM ### Ed is 7 yera older than ted. ed age is also 3 over 2 times teds age. how old are ed and ted ? Ed is 12 and Ted is 6. I believe that's the answer. ANSWERED AT 29/01/2020 - 02:22 PM QUESTION POSTED AT 29/01/2020 - 02:22 PM ### The sum of Sally and Beth's age is 60. Six years ago, Sally was 3 times as old as Beth. What are their present ages? Answer: Present age of Beth is 24 years. And Present age of Sally becomes 36 years. Step-by-step explanation: Let the present age of Beth be 'x'. Six years ago, Age of Beth becomes (x-6) years Age of Sally becomes Sum of Sally and Beth's age = 60 According to question, it becomes So, Present age of Beth is 24 years. And Present age of Sally becomes 60-24=36 years. ANSWERED AT 29/01/2020 - 02:22 PM QUESTION POSTED AT 29/01/2020 - 02:22 PM ### What is the common ratio for the geometric sequence below, written as a fraction? 768, 480, 300, 187.5, … Let Step Find  Divide by numerator and denominator  Step Find  Divide by numerator and denominator  Step Find   Divide by numerator and denominator  In this problem The geometric sequence formula is equal to For therefore the answer is the common ratio for the geometric sequence above is ANSWERED AT 29/01/2020 - 01:54 PM QUESTION POSTED AT 29/01/2020 - 01:54 PM ### Ron is five years older than twice his cousin pat’s age. the sum of their ages is less than 35. what is the greatest age that pat could be? Pat must be 14. for if he is fifteen, double his age plus 5 years would be 35. but their ages must be lower, so pat must be 14. ANSWERED AT 29/01/2020 - 01:35 PM QUESTION POSTED AT 29/01/2020 - 01:35 PM ### Rose is 5 years older than Milton. Rose's age is 10 years less than four times Milton's age. The system below models the relationship between Rose's age (r) and Milton's age (m): r = m + 5 r = 4m – 10 Which is the correct method to find Rose's and Milton's ages? a. Solve m + 5 = 4m – 10 to find the value of m. b. Solve r + 5 = 4r – 10 to find the value of m. c. Write the points where the graphs of the equations intersect the x-axis. d. Write the points where the graphs of the equations intersect the y-axis. A. because all the other methods use different variables ANSWERED AT 29/01/2020 - 12:36 PM QUESTION POSTED AT 29/01/2020 - 12:36 PM ### A car traveling on a highway is 60 miles away from home after 1 hour, and is 300 miles away from home after 5 hours. What is the rate of change of the car’s distance over time?. a. 1/60 mph. b. 15/2 mph. c. 55mph. d. 60 mph Answer: d. 60 mph. Step-by-step explanation: Let x be the number of hours and y be the distance covered in miles. We have been given that a car traveling on a highway is 60 miles away from home after 1 hour, and is 300 miles away from home after 5 hours. Since distance covered by car depends on number of hours, so distance will be dependent variable, y. Now we will use average rate of change formula to solve our given problem. Substituting our given values in above formula we will get,   Therefore, average rate of the car’s distance over time is 60 miles per hour and option 'd' is the correct choice. ANSWERED AT 29/01/2020 - 11:17 AM QUESTION POSTED AT 29/01/2020 - 11:17 AM ### The weight of male Americans between the ages of 18 and 25 is normally distributed, with a mean of 164.5 lb and a standard deviation of 26 lb. One definition of obesity states that a person is obese if the z-score of his or her weight is greater than 2. What is the obesity threshold weight for a young adult American male? Round your answer to the nearest tenth. Answer: X>216.5 pounds Step-by-step explanation: Let X represent the weight of male Americans between the ages of 18 and 25. X is normally distributed, with a mean of 164.5 lb and a standard deviation of 26 lb. A person is obese if the z-score of his or her weight is greater than 2 Let us find out corresponding X score for z=2 Thus a person can be considered as obese if his weight exceeds 216.5 pounds. ANSWERED AT 29/01/2020 - 11:16 AM QUESTION POSTED AT 29/01/2020 - 11:16 AM ### The average dosage of oxcarbazepine for an epileptic child between the ages of four and sixteen is 9.00 mg per 1 kg of body weight. Calculate how many milliliters of oxcarbazepine a child who weighs 42.7 pounds should be prescribed considering the medication is served as a suspension of 60.0 mg/mL. Keep in mind, 1 pound is equivalent to 0.453 kilograms. First, convert the weight of the child from pounds to kilograms using the conversion factor given. The operation gives an answer of 19.3431 kg. With this weight and the given average dosage, the child should be prescribed with 174.0879 mg oxcarbazepine. From the concentration given, the final answer is 2.90 mL. ANSWERED AT 29/01/2020 - 11:14 AM QUESTION POSTED AT 29/01/2020 - 11:14 AM ### The table below shows the ticket rates for whale watching trips offered by Ocean Tours. AgeTicket Price. Under three yearsfree. Three to twelve years$36. Over twelve years$48. On a certain day, the company took 92 people on whale watching trips. There were 40 children aged twelve and under, of which some children were under three years. If x represents the number of children undr three years, which equation can be used to find the value of x, where C represents the total amount of money collected from tickets that day?. @magbak If there are 40 children aged twelve and under and x of them are under three years old, 40 - x aged three twelve years old. From the 92 people that where taken by the company on whale watching trips, 52 are over twelve years old. The equation that best show the total cost, C is (40 - x)(36) + (52)(48) = C Rearranging the equation gives, x = 40 - ((C - 2496)/ 36) ANSWERED AT 29/01/2020 - 11:03 AM QUESTION POSTED AT 29/01/2020 - 11:03 AM ### A school system is reducing the amount of dumpster loads of trash removed each week. In week 5, there were 60 dumpster loads of waste removed. In week 10, there were 40 dumpster loads removed. Assume that the reduction in the amount of waste each week is linear. Write an equation in function form to show the amount of trash removed each week. a. f(x) = - 4x + 60. b. f(x) = 4x + 60. c. f(x) = - 4x + 80. d. f(x) = 4x + 80 You are given two points, (5, 60) and (10, 40) in order to get the equation, let's use the form slope-intercept form m = (y1 - y2) / (x1 - x2) m = (60 - 40) / (5 - 10) m = 20/-5 m = -4 Get the x intercept y = mx + b 60 = (-4)(5) + b b = 60+20 b = 80 so the equation is y = -4x + 80 f(x) = -4x + 80 ANSWERED AT 29/01/2020 - 11:02 AM QUESTION POSTED AT 29/01/2020 - 11:02 AM ### Box A has a volume of 12 cubic meters. Box B is similar to box A. To create box B, box A's dimensions were multiplied by five. What is the volume of box B?. 60 m3. 300 m3. 1,500 m3. 7,500 m3 The formula for the volume of a box (assuming that it is in the shape of a cube) is V=B^3. 12=B^3 Now, do the cube root of 12 to find each dimension, all dimensions will be equal as it is a cube. B= about 2.29 (when doing on a calculator keep full answer and do not round) Now to find the volume of box B, multiply each dimension by 5 5(2.29...) times 5(2.29...) times 5(2.29...) =1,500 m^3 Hope this helps! ANSWERED AT 29/01/2020 - 10:48 AM QUESTION POSTED AT 29/01/2020 - 10:48 AM ### A student earns a flat rate of$30/day planting trees, plus \$0.50/tree planted. Create a table of values and scatter plot showing the amount earned on days when 100,150,200,250 and 300 trees are planted.

Y = 0.50x + 30

trees planted :   (x)  100      150     200      250      300
amount earned :(y)   80       105     130      155      180

ANSWERED AT 29/01/2020 - 10:43 AM

QUESTION POSTED AT 29/01/2020 - 10:43 AM

### At a local donut shop, the morning crew uses 20 3/8 lbs of frosting and 6 3/4 lbs of sprinkles to make their standard batch of donuts. The night crew uses 10 2/5 lbs of frosting and 3 3/16 lbs of sprinkles to make their standard batch of donuts. If the manager has both crews prepare twice as many donuts than usual today, how many pounds of frosting and sprinkles will be used? Reduce your answer to lowest terms. Sorry the question is so long. Answer choices are: A. 20 4/5 frosting, 6 3/8 sprinkles B. 60 31/40 frosting, 18 15/16 sprinkles C. 61 11/20 frosting, 19 7/8 sprinkles D. 40 3/4 frosting, 13 1/2 sprinkles Thanks for your help

Frosting : 2(20 3/8 + 10 2/5) = 2(163/8 + 52/5) = 2(815/40 + 416/40) = 2(1231/40) = 2462/40 = 61 22/40 = 61 11/20
sprinkles : 2(6 3/4 + 3 3/16) = 2(27/4 + 51/16) = 2(108/16 + 51/16) = 2(159/16) = 318/16 = 19 14/16 = 19 7/8