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x(3 − 4x) ≤ 0
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4 months ago
41.17 as a fraction
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4 months ago
32423+9
General
4 months ago
435+5
General
4 months ago
Solve the inequality involving absolute value. |x−2|+4≥10 Enter the exact answer in interval notation. To enter ∞ , type infinity. To enter ∪ , type U. Preview Show your work and explain, in your own words, how you arrived at your answers
General
4 months ago
sin 30
General
4 months ago
tg 45
General
4 months ago
A bakery sells muffins and cookies. The total number of muffins and cookies sold is 78. The number of muffins sold is 15 more than twice the number of cookies sold. Let's use variables to represent the number of muffins and cookies sold. Let: M represent the number of muffins sold. Let C represent the number of cookies sold. From the information given, we can create two equations : 1. The total number of muffins and cookies sold is 78, so we have: M + C = 78 :2. The number of muffins sold is 15 more than twice the number of cookies sold, which can be represented as: M = 2C + 15 So, the equations representing the situation are: M + C = 78 (Total number of items sold) M = 2C + 15 (Number of muffins in terms of cookies). How would be the best way to find out the exact number of muffins sold and the exact number of cookies sold which equal to 78
General
4 months ago
What is ΣX for the following scores: 1, 3, 5
General
4 months ago
What is (ΣX)2 for the following scores: 1, 3, 5
General
4 months ago
(-2x5 - 4x3 - x2 -80) % (x-2)
General
4 months ago
Solve the math problem James drove 2/6th of the way to work in 8 minutes. How much longer will it take to get to work
General
4 months ago
Adam rode 1/6 of distance to school in 4.5 minutes. If he continued at the same speed how long will it take to get to school
General
4 months ago
The continuous random variables (X, Y ) have joint density function fXY (x,y) = xe−xy, x ∈ (0,1), y > 0. a) Derive the marginal density of X and recognise its distribution.
General
4 months ago
The restaurateur buys 14.2 kg of meat, the trimmings amount to 21% and the loss to 32%.
General
4 months ago
Work out the division of 10 into 100
General
4 months ago
The attached table shows the mean and standard deviation of the ungrouped scores corresponding to an exam that has been taken by students from three different groups A, B, and C, with 20 students in each group. The minimum score established in the exam is 0, and the maximum is 10. Mean for group A = 4.35, B = 6.28, and C = 5.33 Standard deviation for group A = 2.37, B = 2.20, and C = 2.68 According to the provided information, the group with the most homogeneous grades is:
General
4 months ago
In a training course offered by a company to a group of workers, one theoretical and the other practical, a rating was given on a scale of 0 to 10. One of the workers received scores of 8.2 and 6.8 in the respective courses. The worker was able to determine the averages and the spread of the grades obtained in each course, with the following result: Theoretical course mean = 8.7 and standard deviation = 0.8 Practical course mean = 5.8 and variance = 1.21. According to the data in the table, in which of the courses did this worker achieve a better relative position?
General
4 months ago
The ratio between the goals against and the goals for Argentina in the Qatar 22 World Cup is 8/15. If the goals for are 1 less than twice the goals against, find how many goals for and against we had.
General
4 months ago
If it is a one-tailed test, and the z-value of the test is 2.0, the P-value is:
General
4 months ago
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