Help with practical math?
1. What is 4C3? 2. In a race, there are 15 runners. Trophies for the race are awarded to the runners finishing in first through fourth place. In how many ways can first through fourth place be determined? 3. Mrs. Wong is going on a trip. She has 14 books that she hasn’t read yet, but she wants to bring only 2 on the trip. In how many ways can she choose 2 books to bring on the trip? I don't expect you to do them for me but can you just explain how I find the answers.
PRACTICAL MATH HELP NEEDED?
10. Which is a correct way to name the tiling? (It's a picture.) http://tinypic.com/r/10qmg7p/5 C] 6^3 11. The scale factor of the blueprint of a shopping mall to the actual shopping mall is 1in/18ft . The area of the mall on the blueprint is 190 in2. What is the area of the actual shopping mall? A] 61,560 ft2 12. The scale factor of a model of a grain silo to the actual silo is 1 to 10. The volume of the actual silo is 550 m3. What is the volume of the model? A] 0.55 m3
I need more help with practical math please.?
Ok you have to do some trigonometry here. the ship was heading to east and was 9.5 km away the it turned southeast and keep going for 2.5 km then the ship had to turn 45 degrees to the south got it? Then you have to locate the coordinates. First at east he headed for 2.5Km*Cos(45º) and to south it was 2.5 km*sin(45º), so the calculator says East:1.767 Km and south 1.767 Km, it makes sense cause it advances to the east and to the south at the same pace. Make a graph if you want to understand better. Now you can locate where is the ship now if you add the distance it traveled to the east and to the south. So to the east it is 9.5km + 1.767km and to the south it is 0km (Because it never went to the south before) + 1.767. So the coordinates are now : 11.267km to the east and 1.767 km to the south. Now you can use the phytagorean theorem like this: Distance to the ship = square root of ( (11.267Km)^2 + (1.767)^2) Distance from the ship to the port= 11.404 Km Try in your calculator. You just need to use sine and cosene function and the phytagorean theorem to do this problem. You just don't sum the two distances like the girls said.
Practical math Help ?
1. The equation y = –5.131x2 + 31.821x – 3.333 approximates the number of people standing in line to catch a commuter train x hours after 5 a.m. What is the best estimate for the number of people in line at 9 a.m.? 32 40 42 46 2. Water was drained from a swimming pool. The equation y = 14590 • 0.95x estimates the number of gallons of water remaining after x hours from the time it started draining. How many gallons of water were in the pool after 14 hours of draining? 6759 7115 7490 13,861 3. Rohit wants to find the best model for a bivariate data set that he is working with. He used a calculator to create a linear model, a quadratic model, and an exponential model. The coefficient of determination for the linear model was 0.55. The coefficient of determination for the quadratic model was 0.60, and the coefficient of determination for the exponential model was 0.51. Which model should he use to represent the data set? linear quadratic exponential
PRACTICAL MATH HELP NEEDED ASAP PLEASE! 10 POINTS.?
Thank you in advance. I have been very sick lately and missed a lot of school so these questions have been difficult for me. Also, math was never my strong suit even before I got sick. I have all A's other than this class. Any help or explanations are much appreciated. I truly want to understand, I'm not just some study guide cheater lol.. 7. (The picture has the question.) http://tinypic.com/r/30c5111/5 A] y = 0.8204x^20783 B] y = 1.0774x^2 – 0.9393x + 0.6905 C] y = 21.2845x – 87.2538 D] y = 6.2740 · (1.2760)^x 10. The total grams of fat in three different desserts are 16 g, 24 g, and 30 g. The probability of choosing a dessert with 16 grams of fat is 1/4. The probability of choosing a dessert with 24 grams of fat is 7/12. The probability of choosing a dessert with 30 grams of fat is 1/6. What is the expected value of the grams of fat in a dessert? A] 20 B] 23 C] 26 D] 27 11. (The picture has the question.) http://tinypic.com/r/hu3p11/5 A] 16.7% B] 12% C] 10% D] 6%
Practical math help. Please!?
I can't get my head around the question. Have you written it correctly? Her initial speed is 1 mile in 4 minutes, which is slower than 1mile per minute. So if she runs the third mile at 1mile per minute slower, she would be going backwards.
URGENT PRACTICAL MATH HELP NEEDED PLEASE - APR - 10 POINTS TO BEST ANSWER?
Ugh, can't figure these ones out! Thanks in advance. :) 5. John's unpaid credit card balance is $1942.34. His APR is 16.8%. What is his new balance if he made one new transaction for $280? a $1969.53 b $2249.53 c $2268.55 d $2548.55 6. Jason's statement shows a previous balance of $2452.64, a payment of $160, and new transactions totaling $138. What is his new balance if his APR is 15.6%? a $2460.44 b $2462.52 c $2546.56 d $2620.44
Urgent Practical Math help needed please! 10 points!?
2. Suppose that f(w) varies inversely with w and f(w) = 0.75 when w = 8. What is f(w) when w = 2? a 12 b 6 c 3 d 1.5 3.. A website sells sweaters. The amount of sales p(c) varies directly with the number of customers c. Ten customers bought a total of $455 worth of sweaters. Which equation can be used to find the sales for c customers? a p(c) = 45.5c b p(c) = 455c c p(c) = 4550/c d p(c) = 455/c 4.The time it takes to remodel a kitchen t(p) varies inversely with the number of workers assigned to the job p. A kitchen remodeling job takes 40 hours to complete when 2 workers are assigned to it. Which equation can be used to find the time to complete the job when p workers are assigned to it? a t(p) = 40p b t(p) = 8p c t(p) = 80/p d t(p) = 20/p 5. Which point is on the graph of a direct variation equation in which k = 12.4? a (4, 49.6) b (49.6, 4) c (4, 3.1) d (3.1, 4)
Please help me answer this Practical Math question.?
Michael was rock climbing El Captain at Yosemite National Park. He climbed up the rock wall at a rate of 0.1 ft per second. Find Michael's climbing rate in feet per hour. -100 ft per hour -60 ft per hour -360 ft per hour -320 ft per hour