Ob a multiple choice exam with 25 questions , the instructor scored the exams as follows: 4 points for each correct answer. What was the score of a student who had 14 correct answers , 3 blank answers, and 8 wrong answers?
Wednesday, May 13, 2015 at 12:44am
An auto dealer paid $ 4195.25 for a large order of special parts. This was not the original price. The amount paid reflects a 3% discount off the original price because the dealer paid cash. What was the original price of the parts?
Wednesday, May 13, 2015 at 12:37am
A car saleswoman earns a commission of 12% on each car she sells. How much money did she make the dealership in car sales the month she recieved $19,200 in commission?
Wednesday, May 13, 2015 at 12:33am
each individual letter of the word Tallahassee is placed on a piece of paper and all 11 pieces of paper are placed in a hat. If one letter is selected at random from the hat, determine the probability that the letter T or E is selected.
Wednesday, May 13, 2015 at 12:12am
Electronics, Physics, Math
5. A circuit is supplied with 30 VDC and contains three resistors connected in series. The value or R1 is 80Ω, the value of R2 is 1,000Ω , and the value of R3 is 4,200Ω . What is the voltage drop across R2? A. 5.68 V B. 2.14 V C. 4.61 V D. 6.82 V I keep coming ...
Tuesday, May 12, 2015 at 10:51pm
A farmer is installing a fence. The coordinates of the vertices of the fence are A(2,2), B(2,6), C(8,6), D(8,2). If each grid square has length of 9 yards, how much wire is needed for the fence?
Tuesday, May 12, 2015 at 10:40pm
Millwood City is constructing a new highway through town. The construction crew can complete 5 3/5 miles of road each month. Can the highway be finished in 8 months? 6 1/2 months have already passed by and so far they have 36 2/5 miles complete. Thanks! My friend and I are ...
Tuesday, May 12, 2015 at 9:10pm
Millwood City is constructing a new highway through town. The construction crew can complete 5 3/5 miles of road each month. 6Can the highway be finished in 8 months?
Tuesday, May 12, 2015 at 9:06pm
Lavonnes mother has brown eyes, and her father has blue eyes. Lavonne has brown eyes, and her husband has blue eyes. She knows that her children are equally likely to have brown or blue eyes. What is the probability that her first child will have blue eyes? If her first ...
Tuesday, May 12, 2015 at 6:26pm
6. Given the functions rule f(x)=x^2-3x+2 what is the output of f(-2)? A. -8 B.0 C.4 D.12 7. Suppose you earn $12 each time you now the lawn. Which function describes the relationship between your total earnings E and the number of times you now the lawn, m?
Tuesday, May 12, 2015 at 4:25pm
Math (Riemann Sums)
Measurements of a lakes width were taken at 15-foot intervals, as shown: x= 0 15 30 45 60 75 90 105 120 f(x)= 0 15 18 20 19 23 24 22 12 Estimate integral (0,120) f(x) dx with n = 4, using Midpoint approximation. For this question, I ended up with 7200 but compared to the...
Tuesday, May 12, 2015 at 3:14pm
a bag of fruit contains 4 apples, 1 plum, 2 apricots, 3 oranges. Pieces of fruit are drawn twice with replacement. What is p(apple, then apricot)? 4/5, 2/25, 3/25, 3/5 I chose 3/5
Tuesday, May 12, 2015 at 2:11pm
a bag of fruit contains 4 apples, 1 plum, 2 apricots, 3 oranges. Pieces of fruit are drawn twice with replacement. What is p(apple, then apricot)? 4/5, 2/25, 3/25, 3/5 I chose 3/5.
Tuesday, May 12, 2015 at 1:41pm
Which of the following is an example of independent events? rolling a number cube selecting marbles from a bag without replacement after each draw Choosing and eating a piece of candy from a dish and then choosing another piece of candy pulling a card from a deck when other ...
Tuesday, May 12, 2015 at 1:04pm
Kerry got her kite stuck in the very top of a tree. If she knows that she is standing 50 yards away from the tree and the angle that her kite string makes when held to the ground by her feet is 48 degrees, how tall is the tree?
Tuesday, May 12, 2015 at 10:45am
Use the table below to answer the following question. x: 1, 2, 3, 4 y: 1, 4, 9, 16 Which is NOT true about the above table? A: It shows a linear function. B: The variable x increases by 1 each time. C: The rate of change is not constant. D: The variable y increases by a ...
Tuesday, May 12, 2015 at 10:20am
Some irrigation systems spray water in a circular pattern. You can adjust the nozzle so it sprays in certain directions. The nozzle in the diagram is set so it does not spray the house. If the spray has a radius of 12 ft, what is the approximate length of the arc that the ...
Tuesday, May 12, 2015 at 10:05am
find the median of 2,2,26,14,49,42,39. If necessary, round to one decimal place. A) 14 B)25.4 C)39 D)26 I have done the math for this calculation by adding the numbers and then divided by 7 and got 24.85714286 by rounding I would have 24.9. Which isn't an option. So what ...
Tuesday, May 12, 2015 at 9:36am
Math to hard please help
List three different ways to write 5^11 as the product of two powers. Explain why all three of your expresses are equal to 5^11. Please help me I don't know how to do this kind of math.
Monday, May 11, 2015 at 10:51pm
please help with in a day jamal spent 1 2/3 hours watching television 1 4/5 hours taking an afternoon nap, and 7/8 hour helping his mother with housework how much time did Jamal spend on watching television and helping with housework do I have to change this into minutes? I ...
Monday, May 11, 2015 at 10:14pm
The radius of a 12 inch right circular cylinder is measured to be 4 inches, but with a possible error of ±0.2 inch. What is the resulting possible error in the volume of the cylinder? Include units in your answer.
Monday, May 11, 2015 at 10:14pm
A car travelling at 23 miles per hour accelerates to 46 miles per hour in 5 seconds. It maintains that speed for 5 seconds before it slows to a stop in 5 seconds. Sketch and label a graph showing the car's speed over time.
Monday, May 11, 2015 at 10:11pm
A 160‐inch strip of metal 20 inches wide is to be made into a small open trough by bending up two sides on the long side, at right angles to the base. The sides will be the same height, x. If the trough is to have a maximum volume, how many inches should be turned up on ...
Monday, May 11, 2015 at 9:20pm
A bus driver filled up 7/8 fuel tank for a trip. She used 6/7 of the fuel by the end of the trip. the capacity of her tank is 70 gallons. How much fuel did she use for the trip? Express your answer as decimal. Please help BJ Thank you
Monday, May 11, 2015 at 9:08pm
A particle moves on a line away from its initial position so that after t hours it is s = 6t2 + 2t miles from its initial position. Find the average velocity of the particle over the interval [1, 4]. Include units in your answer.
Monday, May 11, 2015 at 7:37pm
I have all the answers for c I just need to make sure I am correct. For b I am a little lost. For a I have the answer but I know I am probably wrong. The city of Valley Grove is considering shortening the length of the school day. The school board hired Mr. Kent to do a survey...
Monday, May 11, 2015 at 6:39pm
In Mr. Everett's first-period class, 18 of 25 students passed the last test. In his second period, 17 of 23 passed. Use the percents to conclude which class did better. Show all work.
Monday, May 11, 2015 at 6:33pm
Select the inequality that models the problem. The length of a rectangle is four times its width. If the area of the rectangle is less than 100 square meters, what is the greatest width of the rectangle? 4w + w < 100 4 + 4w < 100 4w < 100 4w w < 100
Monday, May 11, 2015 at 5:51pm
Do the data in the table represent a linear function? if so, write a rule for the function X= -2,-1,0,1,2 Y= -7, 1,8,17,25 A. yes; y= 8x + 9 B. yes ; y = 8x +8 C. yes ; y = 1/8x+8 D. no*** plz help me
Monday, May 11, 2015 at 5:43pm
Do the data in the table represent a linear function? if so, write a rule for the function X= -2,-1,0,1,2 Y= -7, 1,8,17,25 A. yes; y= 8x + 9 B. yes ; y = 8x +8 C. yes ; y = 1/8x+8 D. no***
Monday, May 11, 2015 at 5:24pm
A prototype rocket burns 159 gallons of liquid hydrogen fuel each second during a regular launch. Make a table that shows how many gallons of fuel are burned after 2,3,5,and 10 seconds. Please help me
Monday, May 11, 2015 at 5:19pm
the cost of a student ticket to the schools play is $7. write an equation that correctly relates the cost,c,for particular number of student tickets,s,purchased indetify the independent and dependent variables (3 Points) Please help
Monday, May 11, 2015 at 4:51pm
Extremly hard math
The function rule C =10n+26 relates the number of people n who attend a small concert to the cost of dollars C of the concert. Make a table of the imput/output pairs to show the cost if 27,39, and 43 people attend. Please help me I dont understand any of this.
Monday, May 11, 2015 at 4:44pm
Select the phrase that correctly completes the sentence The value of the dependent varibale in a function is always _________ the value of the independent A. Determined By B.greater than C.equal to D.less than
Monday, May 11, 2015 at 4:08pm
Does the figure have rotational Symmetry? Find the angle of rotation. (It's just a picture of a star.) A-YES; 30 degrees B - YES, 60 degrees C- yes 72 degrees D no.
Monday, May 11, 2015 at 3:56pm
We throw 250 darts (one by one) at 1200 dart boards. Each dart strikes a board randomly. No dart's strike affects any other. What is the probability that two darts will strike the same board? I make it 1 in 1200, b/c the probability of the 1st dart striking a board is 1. ...
Monday, May 11, 2015 at 3:42pm
Math last question.
(3x^2 - 7x -4) - (6x^2 -6x +1) It's a polynomial I think the answer is D or C, but I'm not sure which one. Help please A. 3x^2 - 13x - 5 B. 9x^2 - x + 5 C. -3x^2 -13x + 5 D. -3x^2 -x -5
Monday, May 11, 2015 at 3:17pm
add or subtract. P.s this is a polynomial. (2x^2 + 6x + 1) + (-7x^2 + 2x - 3) A. -9x^2 -8x + 2 B. 5x^2 + 8x - 2*** C. 5x^2 - 8x + 2 D. 5x^2 -4x -2 i choose B. check please
Monday, May 11, 2015 at 2:59pm
Produce the algorithm for the problem above [this will include five get statements to input item 1, item 2, item 3, item 4 and item 5; three math statements to process the subtotal, tax and total; and three display statements to output the subtotal, tax...
Monday, May 11, 2015 at 11:31am
Please help me find the slope of a line that is perpindicular to the line to the line containing the points -2, -1 and 2, -3. m = -2 m = 2 m= -1/2 m = -1 I think it is a, but I have no idea
Monday, May 11, 2015 at 10:55am
Math 12A Plain Trigonometry
a surveyor wishes to measure the distance between two objects, a carabao and a tower on the opposite side of the river. while standing at point R, he finds that the distance between the carabao is 30 meters, while the distance to the tower is 415 meters. The angle formed ...
Monday, May 11, 2015 at 9:09am
Math 12A Plain Trigonometry
a boat leaves lighthouse P and sails 10 miles. At the same time, it is sighted from lighthouse Q, 13 miles west of P. The bearing of the ship from Q is North 70 degree and 30 minutes East. Find the distance of the ship from Q.
Monday, May 11, 2015 at 9:02am
What is the equation of the line that passes through the point (-2,3) and that is perpendicular to the line represented by 3x-2y=-2? A. 2x+3y=5 B. 2x+3y=7 C. -2x=3y=5 D. 3x-2y=-12 I think that the answer is D, but I am not too sure about it.
Monday, May 11, 2015 at 7:55am
Water is taken from a well 11m deep in a bucket,the rope winding up to a drum 35cm in diameter. A)Through what angle does the handle turn in winding up 1m of rope? B)How many revolutions of the handle does it take to bring the bucket up from the bottom? C)If the arm of the ...
Monday, May 11, 2015 at 7:26am
The population of a certain country grows according to the formula N=N0e^kt where N is the number of people(in millions) after t years,N0 is the initial number of people(in millions) and k=1/20In 5/4.Calculate the doubling time of this population.Leave your answer in terms of ...
Monday, May 11, 2015 at 5:07am
Each inidividual letter of the word Tallahassee is placed on a piece of paper and all 11pieces of paper are placed in a hat, if one letter is selected at random from the hat, determine the probability that the letter T or F is selected.
Monday, May 11, 2015 at 12:38am
A prototype rocket burns 159 gallons of liquid hydrogen fuel each second during a regular launch. Make a table that shows how many gallons of fuel are burned after 2,3,5, and 10 seconds.
Monday, May 11, 2015 at 12:19am