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MATH SOLVE
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General
Without graphing, is the system independent, dependent, or inconsistent? -2x - y = 9 and 3x - 4y = -8
General
5 months ago
Your balance is $42. You buy lunch every day for $1.80 and sometimes buy a snack for $0.85. After 20 days you have a balance of $0.05. How much snacks did you buy?
General
5 months ago
which of the following represents the equation of a line with the slope of 1/4 that passes through the point (-8,2)? chose all that applyA. y-2=1/4(x+8)B. y+2=1/4(x+8)C. x-4y=-16D. y=1/4xE. y=4x+8
General
5 months ago
-.At a fair hamburgers sell for $3.00 each and hot dogs sell for $1.50 each. The equation 3x + 1.5y = 30 describes the number of hamburgers and hot dog a family can buy with $30 a. b.
General
5 months ago
Prof. Dumbledore is concerned that Harry, Ron and a few other students are still having some difficulties with significant figures. Hermione seems to have gotten it though. Why don’t we try to review them. How many significant figures does the result of the following expression have? (6.635-1.321)*(1747.4)*(3.54-2.6).
General
5 months ago
Imagine we measured the height of all the male students at a particular college. We found that the average height of men at this school was 70 inches (5'10") with a standard deviation of 2 inches and the distribution is approximately normal in shape. If we were to randomly select one male student from this college, what is the probability that this student is 73 inches (6'1") or taller?
General
5 months ago
8. Current Electronics plans to introduce a new laptop computer. The fixed costs are $125,300, and the variable costs are $450 per unit. The revenue from each computer is $800. Find the following: (5 points) a) The total cost C(x) of producing x computers. b) The total revenue R(x) from the sale of x computers. c) The total profit P(x) from the production of and sale of x computers. d) The profit or loss from the production and sale of 400 computers e) The break-even point.
General
5 months ago
A police officer claims that the proportion of accidents that occur in the daytime (versus nighttime) at a certain intersection is 35%. To test this claim, a random sample of 500 accidents at this intersection was examined from police records it is determined that 156 accidents occurred in the daytime. The following is the setup for this hypothesis test: {H0:p=0.35Ha:p≠0.35 Find the test statistic for this hypothesis test for a proportion. Round your answer to 2 decimal places. Provide your answer below:
General
5 months ago
2. Find the value of x and y.(2x +7) degrees(12y + 1) degrees(3x - 7) degrees
General
5 months ago
percent increase or decrease: an item's quality reduces from 1,012 to 948. what is the percentage decrease of the quantity? round your answer to the nearest tenth of a percent.
General
5 months ago
A random sample of 49 measurements from one population had a sample mean of 15, with sample standard deviation 5. An independent random sample of 64 measurements from a second population had a sample mean of 18, with sample standard deviation 6. Test the claim that the population means are different. Use level of significance 0.01
General
5 months ago
If a time series plot exhibits a horizontal pattern, then a. the data fluctuates around the variable mean. b. it is evident that the time series is stationary. c. there is still not enough evidence to conclude that the time series is stationary. d. there is no relationship between time and the time ser
General
5 months ago
Pumps A, B and C operate at their respective constant rates. Pumps A and B, simultaneously, can fill a certain tank in 6/5 hours. Pump A and C, operating simultaneously, can fill the tank in 3/2 hours; abd pumps B and C, operating simultaneously, can fill the tank in 2 hours. How many hours does it take pumps A, B, and C, operating simultaneously, to fill the tank?(A) 1/3(B) 1/2(C) 2/3(D) 5/6(E) 1
General
5 months ago
Your family goes to a restaurant for dinner. There are 7 people in your family. Some order the chiken dinner for $ 12 dollars and some order the steak dinner for $ 17 dollars. If the bill was $ 109 dollars, how many people ordered each dinner?
General
5 months ago
Jon is looking into a $4,250 vacation package that is offered for 25% off. There is a 9% resort fee added on to the total. How much will the vacation cost Jon.
General
5 months ago
Tammy makes $ 7 per hour plus $4 for each item she sells, and lisa makes $10 per hour plus 3.00 for each item she sells. in an hour , how many items do they need to sell to make the same amount of money?show steps
General
5 months ago
GETS BRAINILIST!!!!!!What is the length of the line segment PQ on the coordinate grid? A fourquadrant coordinate grid from negative 50 to positive 50 in increments of 10 is drawn. Point P is plotted on the ordered pair negative 20, 10. Point Q is plotted on the ordered pair 10, 10. The points are connected by a line. 20 units 30 units 40 units 50 units
General
5 months ago
Solve the system : x = 2 - y and 3x + 3y = 6a) ( 4, -2 )b) ( 1, 1 )c) Parallel linesd) Coincident lines
General
5 months ago
Consider two consecutive positive integers such that the square of the second integer added to 3 times the first is equal to 85
General
5 months ago
A survey study is to be made to estimate the proportion of residents of a certain suburb who favor the construction of a public park near the suburb. The survey will ask at least 30 residents about their opinion regarding the construction. How large a sample is needed if one wishes to be at least 95% confident that the estimate is within 0.04 of the true proportion of residents favoring the construction of the public park?
General
5 months ago
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