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MATH SOLVE
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The cost of producing x soccer balls in thousands of dollars is represented by h(x) = 5x + 6. The revenue is represented byko 9x2 Which expression represents the profit, (k-1)(x) of producing soccer balls?
General
2 months ago
Young's modulus is a quantitative measure of stiffness of an elastic material. Suppose that for aluminum alloy sheets of a particular type, its mean value and standard deviation are 70 GPa and 1.6 GPa, respectively (values given in the article "Influence of Material Properties Variability on Springback and Thinning in Sheet Stamping Processes: A Stochastic Analysis" (Intl. J. of Advanced Manuf. Tech., 2010: 117–134)). (a) If X is the sample mean Young's modulus for a random sample of n = 64 sheets, where is the sampling distribution of X centered, and what is the standard deviation of the X distribution?
General
2 months ago
The distribution of the weights of loaves of bread from a certain bakery follows approximately a normal distribution. Based on a very large sample, it was found that 10 percent of the loaves weighed less than 15.34 ounces, and 20 percent of the loaves weighed more than 16.31 ounces. What are the mean and standard deviation of the distribution of the weights of the loaves of bread?
General
2 months ago
What is true about △ABC? Select three optionsA) AB ⊥ ACB) The triangle is a right triangle. C) The triangle is an isosceles triangle. D) The triangle is an equilateral triangle.E) BC ∥ AC
General
2 months ago
In 1903, a paper published by Abigail Camp Dimon, discussed the effect of environment on the shape and form of two sea snail species. Nassa obsoleta and Nassa trivittata. One of the variables that Dimon considered was the length of the shell. She found that the mean shell lenth of 461 randomly selected specimens of N. trivittata to be 11.9 mm., with a standard deviation of 2.5 mm. (Source: Elementary Statitics, Weiss, 8th Edition) If you were to construct a confidence interval for the average shell length for the N. trivittata species, what is the standard error used to calculate the margin of error? (do not round any values except your final answer. round your answer to the thousands place)
General
2 months ago
The minute hand of a wall clock measures 10 cm from its tip to the axis about which it rotates. The magnitude and angle of the displacement vector of the tip are to be determined for three time intervals. What are the (a) magnitude and (b) angle from a quarter after the hour to half past, the (c) magnitude and (d) angle for the next half hour, and the (e) magnitude and (f) angle for the hour after that
General
2 months ago
Container a has 200 L and it's being filled at a rate of 6 liters per minute. Container b has 500 L of water, and is being drained at 6 Liters per minute how many minutes(m) will it take for the two containers to have the same amount of water
General
2 months ago
select all the ratios that are equivalent to the ratio 12:3. explain how you know( show multiplication or division)A 6:1B1:4C4:1D24:6E15:6F1200:300G112:13
General
2 months ago
Makya was conducting a physics experiment. He rolled a ball down a ramp and calculated the distance covered by the ball at different times. The ball rolled a distance of 1 foot during the first second, 3 feet during the next second, and so on. If the distances the ball rolled down the ramp each second form an arithmetic sequence, determine the distance the ball rolled down during the fifteenth second.
General
2 months ago
In △MNK MN = NK, m∠N = 110º, MK = 5. Find MN.
General
2 months ago
(100 points boys) Just this one question for my math.
General
2 months ago
10. Pick the points that make the systems of equations true.Select all that apply (more than one point is possible).a) (2, 2)b) (0,4)c) (6, 1)d) (1,6)e) (-2,8)
General
2 months ago
jacob found a great deal on a laptop for 40%off the original price if the sale price is $525 what is the original price of the laptop
General
2 months ago
Sarita says the question of a line with a y-intercept of 7 that includes the point (3,-2) is y= -2/3x+7.Is she right if so explain why.If not,find the correct equation
General
2 months ago
The function f(x) = 40x + 8 represents the amount of money Makayla earns reupholstering furniture. The function g(x) = 3x − 4 represents her upfront costs. Find (f – g)(4) to determine how much profit she will make from four pieces of furniture. $168 $21 $160 $8
General
2 months ago
The vertex of a parabola is (−5,2) , and its focus is (−5,6) .What is the standard form of the parabola??
General
2 months ago
cora says she doesn't need to know the y-intercept of a line to write its equation, just its slope and some other point on the line. Is she correct? Explain. If Cora is correct, explain how to find the equation of a line with a alope of -1/3 that includes the point (2,6).
General
2 months ago
A researcher (Jack) comes to you and is interested in the average length of time a computer fan will run before it needs to be cleaned. Jack believes that this time period is approximately normally distributed with a standard deviation of 30 hours. You tell him to take a sample of computer fans. Jack comes back to you and says that he took a random sample of 36 computers, and found that the average length of time was 876 hours. Use a 94% confidence interval.
General
2 months ago
carlos pays a monthly fee of $12, and he pays an additional $0.05 per minute. The least he has been charged in a month is $85.15. What are the possible # of minutes he has used his phone in a month? Use M for the number of minutes, and solve your inequality for M.
General
2 months ago
What does a standard score measure? A. the number of standard deviations that are present under a normal curve B. the number of standard deviations a measurement is from the highest value C. the number of standard deviations a measurement is from the lowest value D. the number of standard deviations a measurement is from the mean
General
2 months ago
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