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Can someone help me with these problems? The majority of them I have answers but I don't understand them. Thanks!What is the area of the triangle with a base of 5 1/2 cm and a height of 3 1/2 cm? My answer - 11 1/2919÷ 2Round to the nearest wholeMy answer-?What is the area of a parallelogram with a base of 14.5 m and a height of 21 m?The cafeteria sold 200 grilled cheese sandwiches, 100 tacos, and 150 grilled chicken salads. What is the ratio in simplest terms of grilled chicken salads sold to the total number of lunches sold?My Answer- 1:3What is the ratio of odd to even digits in the following number: 7,208,631My Answer- 3:4Given that one ton is equal to 2000 pounds, what is 5 tons? My Answer- 400 or 1000A table measures 3 feet across. How many inches is this? My Answer-36
General
6 months ago
Help please.The equation represents function A, and the graph represents function B.Function A:F(x) = -2x + 1Function B:Which equation best compares the slope of the two functions?1. Slope of function B =2x slope of function A2. Slope of function A = slope of function B3. Slope of function A= 2x slope of function B4. Slope of function B = -slope of function A
General
6 months ago
Mario's charges $4 for 65 ounces of soda and Mike's charges $2.50 for 34 ounces of soda.Jayda only has $3 and wants to get as much soda as possible.Which store should she go to? How much more soda will she get for $3?
General
6 months ago
The adrenaline concentrations of all sparrows in a county are normally distributed with a mean of 0.3 gram and a standard deviation of 0.02 gram. What percentage of the sparrows, taken 10 at a time, have mean concentration between 0.28 and 0.33 gram? Round your answer to the nearest integer. Do not include the percentage symbol in your answer.
General
6 months ago
The antibody production of 12 male red-winged blackbirds before and after receiving testosterone implants was compared. The units for antibody levels were natural log (10-3 optical density) per minute (ln(mOD/min)). The mean change in antibody production was d = 0.056, and the standard deviation was sd = 0.148 If you were assigned the task of repeating this experiment, and wanted to ensure that you could detect a mean change of 0.03 units with a probability of 0.8, then what sample size would you use? Since we are calculating n for a study of individuals, answers should be rounded up to the next whole number.
General
6 months ago
The amount of time that a customer spends waiting at an airport check-in counter is a random variable with mean 8.2 minutes and standard deviation 1.5 minutes. Suppose that a random sample of n = 49 customers is observed. Use the Central Limit Theorem to find the approximate probability that the (sample) average time waiting in line for these customers is (a) Less than 10 minutes. (b) Between 5 and 10 minutes. (c) Less than 6 minutes. (d) If you only had two observations instead of 49 observations, would you believe that your answers to parts (a), (b), and (c), are more accurate or less accurate? Why? (e) If you had 1,000 observations instead of 49 observations, would you believe that your answers to parts (a), (b), and (c), are more accurate or less accurate? Why?
General
6 months ago
which type of correlation is suggested by the scatter plot?a. positive correlationb. negative correlationc. equal correlationd. no correlation
General
6 months ago
Part AJoan bought a soft drink for 3 dollars and 8 candy bars. She spent a total of 43 dollars. How much did each candy bar cost? Which equation matches this problem? Part BHow much did each candy bar cost?
General
6 months ago
Aliyah had some candy to give to her four children. She first took ten pieces for herself and then evenly divided the rest among the four children. Each child recieved two pieces. How many pieces did she start with?
General
6 months ago
Suppose that you earned a bachelor's degree and now you're teaching high school. The school district offers teachers the opportunity to take a year off to earn a master's degree. To achieve this goal, you deposit $ 4000 at the end of each year in an annuity that pays 7.5 % compounded annually.a. How much will you have saved at the end of five years? (Do not round until the final answer. Then round to the nearest dollar as needed.)b. Find the interest.
General
6 months ago
Te weight of an adult bottlenose dolphin was found to follow a normal distribution with a mean of 550 pounds and a standard deviation of 50 pounds. a. What percentage of adult bottlenose dolphins weigh from 400 to 600 pounds? b. If X represents the mean weight of a random sample of 9 adult bottlenose dolphins, what is P X (500 580 < < ) ? c. In a random sample of 9 adult bottlenose dolphins, what is the probability that 5 of them are heavier than 560 pounds?
General
6 months ago
13. How many cubic yards of concrete are needed to pour 6 footings that measure 2' 6"by 1' 6" by 12" inches deep? (Note: 2' 6" = 2.5', 1' 6" = 1.5', and 12" = 15)
General
6 months ago
what is the circumference of a sphere of radius 2?
General
6 months ago
100 points and brainliestMira and Sasha observed two points, P and Q, on a number line.A number line is shown from negative 2 to positive 2 with increments of 2 over 8. A point P is shown at the seventh tick mark to the left of 0, and a point Q is shown at the seventh tick mark to the right of 0.Sasha said that the absolute values of the numbers represented by the two points are different.Mira said that the absolute values of the numbers represented by the two points are the same.Which of the following explains who is correct? A Sasha, because the points are of different signsB Sasha, because the points are at different locationsC Mira, because each of the two points is 14 over 8 units from 0D Mira, because the distance between the two points is 14 over 8 units
General
6 months ago
Pizzas cost $14 dollars each. How many pizzas can you buy with $60? Quotient: Remainder: Circle what you did with the remainder. Ignored it. Rounded the quotient up Why?
General
6 months ago
Suppose that the distribution of heart rates for medium sized dogs is normally distributed with mean 115 beats per minute and standard deviation 18 beats per minute. Stacy takes her medium sized dog, Scooter to the veterinarian for a wellness check and learns that scooters heart rate is 126 beats per minute. Answer question Ca. What is the standard score for scooters heart rate?= .61b.What percentage of medium-sized dogs have a heart rate that is lower than Scooters? = 76%c. Stacy learns from the veterinarian that dogs with heart rates in the upper 8% may be in danger of heart failure. For medium-sized dogs, a dangerous heart rate would be one above what value?
General
6 months ago
Suppose that Jean studied for the Graduate Management Admission Test (GMAT) using a well-known preparation class and was thrilled to receive a total score of 740. Her friend Eric, however, thinks she would have scored just as well without the class. To test the efficacy of the class, they obtain a small but random sample of 17 test results from other students using the same class. This sample's average is 559.42 with a standard deviation of 108.03. In comparison, the national average was 550.12. Assume the population's results are normally distributed but that its standard deviation is not known. Jean and Eric decide to perform a two-tailed t‑test at a significance level of α = 0.05. How many degrees of freedom should they use in their calculations? df = ___.
General
6 months ago
Dean needs 60 inches of wood to build a rectangular picture frame. The length, l, of the frame is twice its width, w. Three of these equations give the correct value for w. Which equation does NOT? 2⋅(2w+w)=60 w+2w+w+2w=60 2⋅w+2⋅2w=60 w+2w=60
General
6 months ago
jeremy and justine work for a company that receives $45 for each unit of output sold. the company has a variable cost of $25 per item and a fixed cost of $1600. determine a function that models the profit for the company based upon the conditions for revenue and expense
General
6 months ago
A system of equations is shown on the graph below.How many solutions does this system have?
General
6 months ago
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