joeandselah
Calculators
General
Algebra
Geometry
Coordinate-geometry
Statistics
Calculus
Qna
Math
joeandselah
joeandselah
Home
General
Algebra
Geometry
Coordinate-geometry
Statistics
Calculus
Qna
Math
MATH SOLVE
Home
General
Each month, Kaisorn deposits $50.00 onto her public transportation card. It costs her $2.50 per trip to ride the subway. Thom deposits $40.00 on his public transportation card. It costs him $2.00 per trip to ride the subway. If x represents the number of trips and y represents the amount remaining in each account, which system of equations represents their transportation costs? 50 − 2.5x = y 40 − 2x = y 50 + 2.5x = y 40 + 2x = y 50 − 2.5y = x 40 − 2y = x 50 + 2.5y = x 40 + 2y = x
General
4 months ago
Jasmine. made a pitcher of lemonade. One pitcher contains 12 glasses of lemonade. After Jasmine serves 4 glasses of lemonade, how many more glasses, g, can she serve?
General
4 months ago
Which of the following statements is not true? a) The standard deviation of the sampling distribution of sample mean = σ/√n b) The larger the sample size, the better will be the normal approximation to the sampling distribution of sample mean. c) The sampling distribution of the sample mean is always reasonably like the distribution of X, the distribution from which the sample is taken. d) The sampling distribution of sample mean is approximately normal, mound-shaped, and symmetric for n > 30 or n = 30. e) The mean of the sampling distribution of sample mean is always the same as that of X, the distribution from which the sample is taken. f) None of the above
General
4 months ago
what did the teenage yardstick say to his parents
General
4 months ago
Jada is solving the equation shown below. -1/2 (x+4) = 6 Which is a possible first step to begin to simplify the equation? Check all that apply. Divide both sides of the equation by –2. Subtract 4 from both sides of the equation. Multiply both sides of the equation by –2. Distribute –2 over (x+4). Distribute -1/2 over (x=4). Multiply both sides of the equation by -1/2.
General
4 months ago
In the equation 6x-2 = -4x + 2, Spencer claims that thefirst step is to add 4x to both sides. Jeremiah claims thatthe first step is to subtract 6x from both sides. Who iscorrect? Explain.
General
4 months ago
Consider that the length of rectangle A is 10 cm and its width is 6 cm. Which rectangle is similar to rectangle A? A) A rectangle with a length of 9 cm and a width of 6 cm. B) A rectangle with a length of 15 cm and a width of 9 cm. C) A rectangle with a length of 14 cm and a width of 7 cm. D) A rectangle with a length of 12 cm and a width of 8 cm.
General
4 months ago
Which of the following is not a commonly used practice? Choose the correct answer below. A. If the original population is normally distributed, then for any sample size n, the sample means will be normally distributed. B. If the distribution of the sample means is normally distributed, and ngreater than30, then the population distribution is normally distributed. C. The distribution of sample means gets closer to a normal distribution as the sample size n gets larger. D. If the original population is not normally distributed and ngreater than30, the distribution of the sample means can be approximated reasonably well by a normal distribution.
General
4 months ago
Help anyone on these 3 problems
General
4 months ago
A gardener uses 144 feet of fencing to build a rectangular garden. The function A(w)=24w−w2 can be used to find the area of the garden for a given width, w. Does the function model the situation over the interval 12
General
4 months ago
The grade appeal process at a university requires that a jury be structured by selecting six individuals randomly from a pool of eleven students and thirteen faculty. (a) What is the probability of selecting a jury of all students? (b) What is the probability of selecting a jury of all faculty? (c) What is the probability of selecting a jury of two students and four faculty?
General
4 months ago
Solve sin θ+1= cos2θ on the interval 0≤ θ<2 pi. Show work
General
4 months ago
A pizza restaurant recently advertised two specials. The first special was a 14-inch pizza for $12. The second special was two 4-inch pizzas for $8. Determine thebetter buy. (Hint: First compare the areas of the two specials and then find a price per square inch for both specials.)Choose the correct answer below.14-inch diameter pizzatwo 4-inch diameter pizzas
General
4 months ago
Subtract (3x2 + 2x - 9) - (6x2 - 16). Write your answer as a polynomial
General
4 months ago
The equation represents Function A, and the graph represents Function B:Function Af(x) = x − 9Function Bgraph of line going through ordered pairs negative 1, negative 3 and 2, 3Which equation best compares the slopes of the two functions? Slope of Function B = 2 x Slope of Function A Slope of Function A = Slope of Function B Slope of Function A = 2 x Slope of Function B Slope of Function B = − Slope of Function A
General
4 months ago
Every day a student randomly chooses a sandwich for lunch from a pile of wrapped sandwiches. If there are six kinds of sandwiches, how many different ways are there for the student to choose sandwiches for the seven days of a week if the order in which the sandwiches are chosen matters?
General
4 months ago
The Greek mathematician Eratosthenes (ca. 276-195 BC) measured the circumference of the earthfrom the following observations. He noticed that on a certain day the sun shone directly down a deep wellin Syene (modern Aswan). At the same time in Alexandrea, 500 miles north (on the same meridian), therays of the sun shone at an angle of 7.2° to the zenith. Use this information to find theradius and circumference of the earth.
General
4 months ago
Verify sin(360º - θ)= -sin θShow your work
General
4 months ago
At the carpet store where you work, a customer wants to buy carpet for a room that is 16 1/2 feet by 18 1/2 feet in size. The carpet ,pad,and installation will cost $17.50 per square yard. To the nearest dollar,how much will it cost to carpet the room?
General
4 months ago
Brianna invested $800 in a company which will earn 3% compounded interest yearly. How mucinvestment after 7 years?27A.7=800(0.3)7B. y = 800 (0.03)? C. y = 800 (1.03)?C.y=800(1.03)7D. y = 500 (1.3)?
General
4 months ago
Previous
1
2
3
4
Next