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At the store, a package of four AA batteries costs $3.92. A package of eight of the same batteriescost $7.60a.) Which package is the better buy? Justify your answer.b.) If you needed to purchase 16 batteries, how much money would you save by purchasing thepackage of batteries that is a better buy? Show your work and explain your answer.
General
2 months ago
Write an equation in slope-intercept form of the line perpendicular to y = 3x + 4 that passes through the point (3, 4). A) y = 3x - 5 B) y = 3x + 5 C) y = 1 3 x + 5 D) y = - 1 3 x + 5
General
2 months ago
What is the sum of the first 7 terms of the series?−3+6−12+24−... ?
General
2 months ago
If Vector u=(5,-7) and v=(-11,3), 2v-6u=_____ and ||2v-6u||≈_____
General
2 months ago
What’s 92 5/6 + 45 6/12 — 32 9/12 then that answer divided by 29 2/12? It’s hard but 40 points?
General
2 months ago
16. Scott and his wife Maria have cell phone plans in which they pay for each call minute and text messagethey send Last month, Scott used 95 call minutes and sent 207 text messages for $23.55. Maria used162 call minutes and sent 124 text messages for $17.26. Find the cost for each call minute.
General
2 months ago
What is the perimeter of the triangle shown on the coordinate plane,to the nearest tenth of a unit ?
General
2 months ago
What is the perimeter of abc Round each step to the nearest tenth.
General
2 months ago
Plz help thanks! Arusha draws a rectangular prism that is made up of two connector cubes each with edge length e. The surface Area of the rectangle prism is represented by the formula SA=10e^2 and the volume of the prism is represented by the formula V= 2e^3. What is the surface area of the prism is the edge length of each connector cube is 5 cm?
General
2 months ago
A certain television is advertised as a 58-inch TV (the diagonal length). If the width of the TV is 42 inches, how many inches tall is the TV?
General
2 months ago
Golf-course designers have become concerned that old courses are becoming obsolete since new technology has given golfers the ability to hit the ball so far. Designers, therefore, have proposed that new golf courses need to be built expecting that the average golfer can hit the ball more than 235 yards on average. Suppose a random sample of 130 golfers be chosen so that their mean driving distance is 240.4 yards, with a population standard deviation of 42.2 .Conduct a hypothesis test where H_0: \mu = 235 and H_1:\mu > 235 by computing the following:(a) \ test statistic ______________\ (b) \ p-value p = ______________
General
2 months ago
How heavy a load (pounds) is needed to pull apart pieces of Douglas fir 4 inches long and 1.5 inches square? Here are data from students doing a laboratory exercise: 33,190 31,860 32,590 26,520 33,280 32,320 33,020 32,030 30,460 32,700 23,040 30,930 32,720 33,650 32,340 24,050 30,170 31,300 28,730 31,920 Suppose that the strength of pieces of wood like these follows a Normal distribution with standard deviation 3000 pounds. Give a 95% confidence interval for the mean load required to pull the wood apart.
General
2 months ago
In 2013, the Pew Research Foundation reported that “45% of U.S. adults report that they live with one or more chronic conditions”.39 However, this value was based on a sample, so it may not be a perfect estimate for the population parameter of interest on its own. The study reported a standard error of about 1.2%, and a normal model may reasonably be used in this setting. Create a 95% conﬁdence interval for the proportion of U.S. adults who live with one or more chronic conditions. Also interpret the conﬁdence interval in the context of the study.
General
2 months ago
In 2015 Forbes magazine listed Bill Gates, the founder of Microsoft, as the richest person in the United States. His personal wealth was estimated to be $76 billion. If there were 314 million people living in the United States that year, how much could each person have received if Gates’ wealth had been divided equally among the population of the United States? (Hint: A billion is a 1 followed by nine zeros while a million is a 1 followed by six zeros.)
General
2 months ago
A ladder is resting against a wall. The top of the ladder touches the wall at a height of 18 ft. Find the length of the ladder if the length is 3 ft more than its distance from the wall.
General
2 months ago
marketing firm asked a random set of married and single men how much they were willing to spend on a vacation. At α = 0.05, we wish to test whether there is a difference in the two amounts. What is the P-value of this test? Round your answer to 3 significant places after the decimal. (For example, 0.0678 has to be entered as 0.068) Married men Single men Sample size 60 60 Sample mean $880 $845 Population variance 5200 7100
General
2 months ago
Of the entering class at a college, 75% attended public high school, 15% attended private high school, and 10% were home schooled. Of those who attended public high school, 18% made the Dean's list, 16% of those who attended private high school made the Dean's list, and 17% of those who were home schooled made the Dean's list. A student is randomly chosen. a) Find the probability that the student made the Dean's list. b) Find the probability that the student came from a public high school, given that the student made the Dean's list. c) Find the probability that the student was not home schooled, given that the student did not make the Dean's
General
2 months ago
Can someone please HELP me on how to do this
General
2 months ago
A building needs a ramp to make it handicap accessible. By law, the ramp must run 10 inches horizontally for every 1 inch of rise. If the surface of the ramp is 57 inches long how far above the ground is the inclined end of the ramp? Round to the nearest tenth of an inch.
General
2 months ago
Luis created the graph below to show the temperaturefrom 8:00 a.m. (8 hours after midnight) until 8:00 pmWhich statements are true about the temperatures Luisrecorded on the graph? Check all that apply.Hourly TemperatureThe temperature increased until 4:00 p.m.12%The temperature was not recorded between 4:00 pmand 6:00 pmTemperature (°F)The temperature decreased after 6:00 pmThe temperature increased and then decreased beforeholding constant1246810 12 14 1618 20w TThe temperature increased more quickly between 12:00pm and 4:00 pm than before 12:00 pmop
General
2 months ago
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