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MATH SOLVE
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A courier service charges a $5 pick up fee plus $0.15 per mile. The total charge to deliver a package was $7.85. How many miles did the courier service travel to deliver the package ?
General
5 months ago
1. The total number of seats in an auditorium is modeled by f(x) = 2x2 – 6x, where x represents the number of rows. How many rows are there in the auditorium if it has a total of 416 seats? Jose knows to plug in the total seats for f(x): 416 = 2x2 – 6xJose needs to solve for x to determine the number of rows. He decides to use his calculator. Under y =, he types in 2x2 – 6x. He checks the table for when y = 0. He gets the two solutions: x = 0, x= 3Jose determines the auditorium has 3 rows. Error:Correct solution:
General
5 months ago
Graph f(x) =-2x^+16x-30 by factoring to find the solutions, then find the coordinates of the vertex, and the axis of symmetry. Identity the equation for the axis of symmetry, write the solutions and the coordinates of the vertex as ordered pairs. Show as much work as possible for full credit. All work should be done by hand.
General
5 months ago
Last year, Keiko had $20,000 to invest. She invested some of it in an account that paid %7 simple interest per year, and she invested the rest in an account that paid %5 simple interest per year. After one year, she received a total of $1,280 in interest. How much did she invest in each account?
General
5 months ago
What is the value of the x-coordinate of point W? Enter your answer as a decimal to the nearest o.5.
General
5 months ago
A motorboat can go 14 miles downstream on a river in 20 mins. it takes 30 minutes for this boat to go back upstream the same 14 miles. find the rate of the boat in calm water an the rate of the current.
General
5 months ago
yesterday , Elsa had K baseball cards today she gave 12 away ,using K write an expression for the number of cards elsa has left
General
5 months ago
Which is the volume formula for a rectangular prism with a base of 26 square feet and a height of 10 feet
General
5 months ago
How many points does the given equation have in common with the x-axis and where is the vertex in relation to the x-axis. y=x^2-12x+12
General
5 months ago
Find the y-intercept and the c-intercept of the line below. Please someone help thank you
General
5 months ago
A country's census lists the population of the country as 247 million in 1990, 269 million in 2000, and 287 million in 2010. Fit a second-degree polynomial passing through these three points. (Let the year 2000 be x = 0 and let p(x) represent the population in millions.)
General
5 months ago
Jaxon and Isaac live different directions from the city center. Jaxon lives 10 blocks east and 5 blocks north. Isaac lives 8 blocks west and 15 blocks south. a. The city center is the origin. What would the coordinates be for Jaxon and Isaac
General
5 months ago
Bonnie has a container in the shape of a rectangular pyramid. The formula for the surface area of the enclosed space is S = lw + 0.5Ph. Solve for P.P = S – lw – 0.5hP = S + lw + 0.5hP = The quantity S minus l times w all divided by 0.5 times hP = S divided by the quantity l times w plus 0.5 times h
General
5 months ago
What is the remainder when (3x^3-2x^2+4x-3) is divided by (x^2+3x+3)?
General
5 months ago
HELP ???? Which is the correct statement ?
General
5 months ago
A random sample of 64 second-graders in a certain school district are given a standardized mathematics skills test. The sample mean score is 51.48 . Assume the standard deviation for the population of test scores is 15. The nationwide average score on this test is 50. The school superintendent wants to know whether the second-graders in her school district have greater math skills than the nationwide average. Perform the hypothesis test and compute the P-value?
General
5 months ago
A record book has 3 confidence intervals listed (2,3) (1,2), and (1.5, 3.) for the samwe parameter. The scientist was told one of them was record from a faulty instrument, the 2nd a 95% confidence interval and the 3rd a 99% confidence interval. But they don't know which is which. Which of the following is true?O (1,2) is 99% CI, (2,3) is 95% CI, (1.5, 3.5) is the errorO (2,3) is 99% CI, (1.5,3.5) is 95% CI, (1,2) is the errorO (2,3) is 95% CI, (2,3) is 95% CI, (1,2) is the errorO (1,2) is 95% CI, (2,3) is 99% CI, (1.5, 3.5) is the error
General
5 months ago
A randomly selected customer support wait time (from a normal distribution) is calculated to be 1.8 standard deviations above its mean. What is the probability that another randomly selected customer wait time from the distribution will be less than 1.8 standard deviations from the mean? Round to four decimal places as needed.
General
5 months ago
AP Stats The College Board reported that 57.9% of all students who took the 2013 AP Statistics exam earned scores of 3 or higher. One teacher wondered if the perfor- mance of her school was better. She believed that year’s students to be typical of those who will take AP Stats at that school and was pleased when 34 of her 54 students achieved scores of 3 or better. Can she claim that her school is better?
General
5 months ago
A group of 50 New York psychology students got a mean score of 530 on the psychology GRE with a standard deviation of 80. These students claim to be WAY more nerdy than a group of 50 California psychology students who had a mean score of 515 with a standard deviation of 50. Are the New York students truly more nerdy than the California students?
General
5 months ago
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