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MATH SOLVE
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The sum of two numbers is 15. Four times one of the numbers is twelve more than two times the other number. What are the two numbers?
General
4 months ago
If KL bisects JLM, findthe values of x and y below,570(8y)"370(7x + 1)º
General
4 months ago
How to calculate standard deviation sample?
General
4 months ago
find the factors of nsquare - 23n -24=0
General
4 months ago
Which shows the correct substitution of the values a, b, and c from the equation 1 = –2x + 3x2 + 1 into the quadratic formula? Quadratic formula: x = StartFraction negative b plus or minus StartRoot b squared minus 4 a c EndRoot Over 2 a EndFraction x = StartFraction negative (negative 2) plus or minus StartRoot (negative 2) squared minus 4 (3)(0) EndRoot Over 2(3) EndFraction x = StartFraction negative (negative 2) plus or minus StartRoot (negative 2) squared minus 4 (3)(2) EndRoot Over 2(3) EndFraction x = StartFraction negative (negative 2) plus or minus StartRoot (negative 2) squared minus 4 (3)(1) EndRoot Over 2(3) EndFraction x = StartFraction negative 3 plus or minus StartRoot 3 squared minus 4 (negative 2)(0) EndRoot Over 2(negative 2) EndFraction
General
4 months ago
Some of the steps in the derivation of the quadratic formula are shown. Step 3: –c + StartFraction b squared Over 4 a EndFraction = a(x squared + StartFraction b Over a EndFraction x + StartFraction b squared Over 4 a squared EndFraction) Step 4a: –c + StartFraction b squared Over 4 a EndFraction = a(x + StartFraction b Over 2 a EndFraction) squared Step 4b: negative StartFraction 4 a c Over 4 a EndFraction + StartFraction b squared Over 4 a EndFraction = a(x + StartFraction b Over 2 a EndFraction) squared Which best explains or justifies Step 4b? factoring a polynomial multiplication property of equality converting to a common denominator addition property of equality
General
4 months ago
A charity organization had to sell 18 tickets to their fundraiser just to cover necessary production costs. They sold each ticket for $45. Let y represent the net profit (in dollars) when they have sold x tickets.Which of the following information about the graph of the relationship is given?Choose 1 answer:ASlope and x-intercept(Choice B)BSlope and y-intercept(Choice C)CSlope and a point that is not an intercept(Choice D)Dx-intercept and y-intercept(Choice E)Ey-intercept and a point that is not an intercept(Choice F)FTwo points that are not intercepts
General
4 months ago
please help with this!!!!!
General
4 months ago
Identify a transformation of the function f(x) = x2 by observing the equation of the function g(x) = (x + 80)2Answer
General
4 months ago
[tex] \frac{2}{3} \times \frac{3}{4} \times \frac{4}{5} \times \frac{5}{6} \times \frac{6}{7} \times ...... \times \frac{98}{99} \times \frac{99}{100 } = [/tex]
General
4 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
4 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
4 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
4 months ago
Select the equation that has a constant of proportionality:A. 16 + x = yB. 16x =yC. 16x -11 = yD. 16x + 15 = y
General
4 months ago
Find the slope-intercept equation for the line with the indicated slope and y-intercept. Slope-3; y-intercept (0,31)
General
4 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
4 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
4 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
4 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
4 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
4 months ago
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