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At 82°F, a certain insect chirps at a rate of 61 times per minute, and at 91°F, they chirp 124 times per minute. Write an equation in slope-intercept form that represents the situation.
General
6 months ago
A student would like to find the height of a statue. The length of the statue's right arm is 33 feet. The student's right arm is 2 feet long and her height is 5 ⅓feet. Use this information to find the height of the statue. How close is the approximate height to the statue's actual height of 88 feet, 2 inches from heel to top of head?
General
6 months ago
The histogram shows the number of cell phone calls received by Medera, a middle school student, one Saturday from 10 a.m. to 10 p.m. m Which statement most reasonably explains the hours when zero calls were received? Medera turned the phone off while playing in a soccer game. Medera’s phone can only receive 22 calls a day. Medera only receives calls in clusters. Medera lost her phone for two hours.
General
6 months ago
The frame of a bridge is constructed of triangles, as shown below.A large triangle is made up of 4 smaller triangles within the larger triangle. Vertical line T U cuts the large triangle in half. Lines U S and U V are diagonal from point U and go up to each side. Angle S U T is 45 degrees and angle T V U is 98 degrees. Line segment T V is 20 feet and line segment S U is 14 feet.What additional information could you use to show that ΔSTU ≅ ΔVTU using SAS? Check all that apply. UV = 14 ft and m∠TUV = 45°TU = 26 ftm∠STU = 37° and m∠VTU = 37°ST = 20 ft, UV = 14 ft, and m∠UST = 98°m∠UST = 98° and m ∠TUV = 45°
General
6 months ago
Suppose a sample of 2329 tenth graders is drawn. Of the students sampled, 489 read at or below the eighth grade level. Using the data, estimate the proportion of tenth graders reading at or below the eighth grade level. Enter your answer as a fraction or a decimal number rounded to three decimal places. .Using the data, construct the 98% 98% confidence interval for the population proportion of tenth graders reading at or below the eighth grade levelupper end point:lower endpoint:
General
6 months ago
A random sample of n measurements was selected from a population with unknown mean mu and standard deviation sigmaequals50 for each of the situations in parts a through d. Calculate a 95% confidence interval for mu for each of these situations. a. nequals40, x overbarequals42 b. nequals300, x overbarequals123 c. nequals155, x overbarequals20 d. nequals155, x overbarequals3.14 e. Is the assumption that the underlying population of measurements is normally distributed necessary to ensure the validity of the confidence intervals in parts a through d? Explain.
General
6 months ago
Select the equation that has a constant of proportionality:A. 16 + x = yB. 16x =yC. 16x -11 = yD. 16x + 15 = y
General
6 months ago
Find the slope-intercept equation for the line with the indicated slope and y-intercept. Slope-3; y-intercept (0,31)
General
6 months ago
The formula for finding the distance traveled, based on speed and time, is D=RTD=RT , whereD is distanceR is rate (speed) T is timeUnits must be consistent. If the unit for D is miles and the unit for T is minutes, what must the units for R be? Solve this formula for R.R = If a bicyclist rides for 160 minutes at an average speed of 17 miles per hour, how far was the ride, to 1 decimal place? miles.At what speed must a bicyclist ride to cover 12 miles in 1.5 hours, to 1 decimal place? miles/hour.
General
6 months ago
The formula for the volume of a cone is given below. Find the rate of change of the volume for each of the radii given below if dr/dt is 9 inches per minute and h = 24r.V = (1/3)πr2ha) r = 5 in (b) r = 17 in
General
6 months ago
The equation below represents the trend line of a scatter plot showing the hours spent studying versus science test scores.y - 6.5x+424The equation below represents the trend line of a scatter plot showing the hours spent studying versus math test scores.y = 7.2x+34.7If a student does not study for either test, on which test should the student expect the higher score?o on the science test because the rate of change is greaterO on the math test because the rate of change is greateron the science test because the y-intercept is greatero on the math test because the y-intercept is greater
General
6 months ago
The distribution of resting pulse rates of all students at Adams High School was approximately normal with mean \mu = 80μ=80mu, equals, 80 beats per minute and standard deviation \sigma = 9σ=9sigma, equals, 9 beats per minute. Only students whose resting pulse rates are in the lower 40\%40%40, percent are eligible join the weight-lifting club. What is the maximum resting pulse rate for students who are eligible to join the weight-lifting club?
General
6 months ago
The data points represent the number of swimmers atCity Pool compared to the outside temperature.(66, 8), (71, 23), (72, 16), (75, 30), (78, 35), (80, 24),(82, 37), (86, 37), (87, 42), (90, 50)Use the regression equation to determine how manyswimmers will be at the pool when the temperature is88°F? Round to the nearest whole number.Swimmers
General
6 months ago
2/4+3/2 im trying fractions so can you tell me what that is
General
6 months ago
Lily swims for 5 hours in stream that has a current of 1 mph. She leaves her dock, swims upstream for 2 miles and then swim back to her dock. What is her swimming speed in still water?
General
6 months ago
The brand name of a certain chain of coffee shops has a 54% recognition rate in the town of Coffleton. An executive from the company wants to verify the recognition rate as the company is interested in opening a coffee shop in the town. He selects a random sample of 10 Coffleton residents. Find the probability that exactly 7 of the 10 Coffleton residents recognize the brand name.0.08240.1560.0008060.0850
General
6 months ago
The bill is $330. We want to split it but a friend gave us $50 for it. Therefore we each owe $140 after the $50. Since I have the $50 in my possession I wok give him $165 since were splitting the $50. Correct?
General
6 months ago
the diagram shows a triangle.all the measurements are in cmthe perimeter of the triangle is 70cm the area of the triangle is Acm squaredwork out the value of A
General
6 months ago
A postmix beverage machine is adjusted to release a certain amount of syrup into a chamber where it is mixed with carbonated water. A random sample of 25 beverages was found to have a mean syrup content of x¯=1.19 fluid ounces and the sample standard deviation is s=0.015 fluid ounces. Find a 95% two-sided confidence interval on the mean volume of syrup dispensed. Assume population is approximately normally distributed.
General
6 months ago
consider the equation y=16-x. which of the following statements is true a. x is a function of y, but y is not a function of x.b. y is a function of x, but x is not a function of y.c. both x is a function of y and y is a function of x.d. neither x is a function of y, nor is a function of x
General
6 months ago
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