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MATH SOLVE
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Devin and Karissa are 210 feet apart when they start walking toward one another. They are walking at the same speed, so whenever Devin travels some number of feet, Karissa travels the same number of feet. Let x represent the number of feet each of them traveled.a. Write an expression in terms of x to represent the total number of feet Devin and Karissa have walked toward one another.b. Write an expression in terms of x to represent the distance (in feet) between Devin and Karissa.
General
4 months ago
In the 1887 experiment by Michelson and Morley, the length of each arm was 11 m. The experimental limit for the fringe shift was 0.005 fringes. If sodium light was used with the interferometer (λ = 589 nm), what upper limit did the null experiment place on the speed of the Earth through the expected ether?
General
4 months ago
Inverse of the function h(x)=\dfrac{3}{2}(x-11)h(x)= 2 3 (x−11)h, left parenthesis, x, right parenthesis, equals, start fraction, 3, divided by, 2, end fraction, left parenthesis, x, minus, 11, right parenthesis?
General
4 months ago
If the annualized GDP growth rates for four consecutive quarters are 2.0%, 0.9%, 0.8%, and 1.2%, estimate the growth rate for the year spanning those four quarters. Give your answer to the nearest tenth of a percent.
General
4 months ago
16. Which of the following measures can be determined for quantitative data?a. Meanb. Medianc. Moded. All of these
General
4 months ago
what is the perimeter of a yard that is 40 feet by 50 feet
General
4 months ago
As a children's librarian, Jodi Hassam earns $15.35 an hourplus time and a half for weekend work. Last week she workedher regular 40 hours plus 16 hours on the weekend. What washer total pay for the week?
General
4 months ago
Given the differential equation x′=−(x+3)(x+1)3(x−1)2(x−2.5). List the constant (i.e. equilibrium) solutions to this differential equation in increasing order and indicate whether or not these solutions are stable, semi-stable, or unstable.
General
4 months ago
Rearrange the first inequality to match the second inequality and fill in the blanks for the variables. Then select the appropriate intervals to create the solution set for this inequality. 4 x + 7 x + 1 < 11 x + 2
General
4 months ago
(Need Help!) 2. A cell phone provider charges $30 each month to have a cell on their plan, but their talk and text are not free. It costs $0.05 for every minute of talk and $0.10 for every text sent. There is no charge for receiving texts. a. Write an algebraic expression that represents the monthly costs of the plan, given t represents the number of minutes and x represents the number of texts sent for each month. b. How much would the plan cost for each of the scenarios below? Talk (mins) Texts Sent Total Cost 100 50 124 26 75 75 80 95 50 100
General
4 months ago
you purchase a 220 airline ticket. You have a discount code to receive 10% off. There is a 10.5% service charge added to the total. How much do you pay for your ticket
General
4 months ago
You are the manager of a restaurant for a fast-food franchise. Last month, the mean waiting time at the drive-through window for branches in your geographical region, as measured from the time a customer places an order until the time the customer receives theorder, was 3.9 minutes. You select a random sample of 81 orders. The sample mean waiting time is 4.05 minutes, with a sample standard deviation of 0.9 minute.At the 0.01 level of significance, is there evidence that the population mean waiting time is different from 3.9 minutes? State the null and alternative hypothesesDetermine the test statistic.(two decimal places)Find the p-value.(three decimal places)What is the conclusionDo i need to be concerned about the shape of the population distribution?
General
4 months ago
Someone help me with this
General
4 months ago
The smiths have two children. The sum of their ages is 23. The produce of their ages is 132. How old are the children?
General
4 months ago
What are the answers?
General
4 months ago
A recipe for oatmeal cookies calls for 2 cups of flour for every 3 cups of oatmeal. How much flour is needed for a big batch of cookies that uses 9 cups of oatmeal?
General
4 months ago
A dinner order at a restaurant consists of a salad with dressing, an entrée, and three sides. The menu offers a salad with your choice of ranch, balsamic vinegar, or Italian dressing; a choice of entrée from catfish, roast beef, meat loaf, or pork chops; and, as sides, fried okra, corn, black-eyed peas, French fries, rice, mashed potatoes, pinto beans, green beans, or squash. How many possible dinner orders are available at the restaurant
General
4 months ago
You are planning to make an open rectangular box from a 38-in.-by-75-in. piece of cardboard by cutting congruent squares from the corners and folding up the sides. What are the dimensions of the box of largest volume you can make this way, and what is its volume?
General
4 months ago
A certain flight arrives on time 86 percent of the time. Suppose 154 flights are randomly selected. Use the normal approximation to the binomial to approximate the probability that (a) exactly 136 flights are on time. (b) at least 136 flights are on time. (c) fewer than 137 flights are on time. (d) between 137 and 146, inclusive are on time. (a) P(136)equals=nothing (Round to four decimal places as needed.)
General
4 months ago
You are to drive to an interview in another town, at a distance of 270 km on an expressway. The interview is at 11:15 a.m. You plan to drive at 100 km/h, so you leave at 8:00 a.m. to allow some extra time. You drive at that speed for the first 110 km, but then construction work forces you to slow to 42.0 km/h for 43.0 km. What would be the least speed needed for the rest of the trip to arrive in time for the interview?
General
4 months ago
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