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Y/5 + 1 divided by y^2/25-1=
General
2 months ago
explain how to solve 3x - 1 = 1 - 3x
General
2 months ago
someone do as much of the page as possible (ill mark brainlyless)
General
2 months ago
Two planes are 1380 miles apart and traveling toward each other. One plane is traveling80 mph faster than the other plane. The planes pass each other in 1.5 hours. Find thespeed of each plane.
General
2 months ago
For what value of x of line a parallel to line b?
General
2 months ago
Simplify x/2 + x/3 /x/4=
General
2 months ago
i hate fractions, the answer/explanation would help me with my other problems with fractions
General
2 months ago
A frame shop has been commissioned to frame 5 black-and-white photos for an island resort. Each photo has a perimeter of 68 in. and a diagonal of 26 in. Find the dimensions of the photos.Longer side is __in. Shorter side is __in.
General
2 months ago
find the midpoint of (-7,-2) AND (1,7)
General
2 months ago
A garden contains two square peanut beds. Find the length of each bed if the sum of the areas is 914ft squared and the difference of the areas is 336ft squared.Length of the smaller bed is __ft.Length of the larger bed is __ft.
General
2 months ago
Consider a flight to be on time if it arrives no later than 15 minutes after the scheduled arrival time. The data below represents the arrival delay time in minutes. Negative numbers correspond to flights that arrived early (before the scheduled time). Use a significant level of 0.05 and the data to test the claim made by CNN that 79.5% of flights are on time. -32 -25 -26 -6 5 -15 -17 -36 -29 -18 -12 -35 2 -33 -5 0 0 -1 -33 -5 -14 -39 -21 -32 -5 -32 -13 -9 -19 49 -30 -23 14 -21 -32 11 -23 28 103 -19 -5 -46 13 -3 13 106 -34 -24
General
2 months ago
Does anyone know how to do this and if so can you please help me and explain how to do it, it’ll be appreciated thank you
General
2 months ago
The perimeter of one of the rectangular playrooms at Miss Pittypat's Day Care is 72 feet. It's width is 10 feet. What is its area?
General
2 months ago
A technician compares repair costs for two types of microwave ovens (type I and type II). He believes that the repair cost for type I ovens is greater than the repair cost for type II ovens. A sample of 60 type I ovens has a mean repair cost of $85.79, with a standard deviation of $15.13. A sample of 56 type II ovens has a mean repair cost of $78.67, with a standard deviation of $17.84. Conduct a hypothesis test of the technician's claim at the 0.1 level of significance. Let μ1 be the true mean repair cost for type I ovens and μ2 be the true mean repair cost for type II ovens.Step 1 of 4: State the null and alternative hypotheses for the test.Step 2 of 4: Compute the value of the test statistic. Round your answer to two decimal places.Step 3 of 4: Determine the decision rule for rejecting the null hypothesis H0. Round the numerical portion of your answer to three decimal places.Step 4 of 4: Make the decision for the hypothesis test. Reject or Fail to Reject Null Hypothesis
General
2 months ago
The article "Plugged In, but Tuned Out" (USA Today, January 20, 2010) summarized data from two surveys of randomly selected kids ages 8 to 18. One survey was conducted in 1999 and the other was conducted in 2009. Data on the number of hours per day spent using electronic media, consistent with summary quantities given in the article, are below.time1999<-c(4, 5, 7, 7, 5, 7, 5, 6, 5, 6, 7, 8, 5, 6, 6)time2009<-c(5, 9, 5, 8, 7, 6, 7, 9, 7, 9, 6, 9, 10, 9, 8)Find the 99% confidence interval for the difference between the mean number of hours per day spent using electronic media in 2009 and 1999. Show all steps of the confidence interval. You may use the formula or R for calculations.
General
2 months ago
A firm that stocks lightbulbs gathers the following information: Demand = 19,500 units per year, Ordering cost = $25 per order, Holding cost = $4 per unit per year. The firm wants to calculate the: a) EOQ for the lightbulbs. b) Annual holding costs for the lightbulbs. c) Annual ordering costs for the lightbulbs.
General
2 months ago
Find the t-coordinates of all critical points of the given function. Determine whether each critical point is a relative maximum, minimum, or neither by first applying the second derivative test, and, if the test fails, by some other method.f(t)= -3t^3+2ta.) f has (a relative maximum, relative minimum, or no relative extrema) at the critical point t=________ * (smaller t-value)b.) f has (a relative maximum, relative minimum, or no relative extrema) at the crtical point t=__________* (larger t-value)
General
2 months ago
A CI is desired for the true average stray-load loss ? (watts) for a certain type of induction motor when the line current is held at 10 amps for a speed of 1500 rpm. Assume that stray-load loss is normally distributed with σ = 2.8. (Round your answers to two decimal places.)(a)Compute a 95% CI for ? when n = 25 and x = 51.4.(_________________, __________________) Watts(b) Compute a 95% CI for ? when n = 100 and x = 51.4.(________________________ , _____________________) watts(c) Compute a 99% CI for ? when n = 100 and x = 51.4.(___________________________, _______________________) watts(d) Compute an 82% CI for ? when n = 100 and x = 51.4.(_________________________, ___________________________) watts(e) How large must n be if the width of the 99% interval for ? is to be 1.0? (Round your answer up to the nearest whole number.)
General
2 months ago
A certain type of automobile battery is known to last an average of 1140 days with a standard deviation of 80 days. If 400 of these batteries are selected, find the following probabilities for the average length of life of the selected batteries. (Round your answers to four decimal places.) (a) The average is between 1128 and 1140. (b) The average is greater than 1152. (c) The average is less than 940.
General
2 months ago
In Jamie's class, 1/5 of the students are boys. What percent of the students in Jamie’s class are boys? A) 1.5% B) 5% C) 15% D) 20%
General
2 months ago
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