Basic Math Questions and Answers

Solve the equation using the quadratic formula. 2x²2² =2x+3 *w*** Score: 0 of 1 Next Question The solution set is . (Simplify your answer. Type an exact answer, using radicals and i as needed. Use integers or fractions for any numbers in the expression. Use a comma to separate answers as needed.)

If you hear someone joking about suicide, A. change the subject B. take it seriously C. laugh along to lighten the mood

A is a set amount of money that you pay systematically in order to receive a certain amount of health insurance. A. deductible B. premium C. tax credit

Change the fraction to decimal form rounded to the nearest thousandth, if necessary. 1 20

Suppose the null hypothesis is rejected. State the conclusion based on the results of the test. Three years ago, the mean price of a single-family home was $243,719. A real estate broker believes that the mean price has increased since then. Which of the following is the correct conclusion? OA. There is not sufficient evidence to conclude that the mean price of a single-family home has not changed. B. There is sufficient evidence to conclude that the mean price of a single-family home has not changed. C. There is not sufficient evidence to conclude that the mean price of a single-family home has increased. D. There is sufficient evidence to conclude that the mean price of a single-family home has increased.

Norepinephrine and dopamine are two different chemicals that are found mainly in which part of the body? A. the lungs B. the stomach C. the brain

Which disease of the respiratory system is a bacterial infection that is very resistant to antibiotics and mainly happens in people whose immune systems do not work well? A. tuberculosis B. asthma C. pneumonia

A company that has 250 employees chooses a committee of 14 to represent employee retirement issues. When the committee is formed, none of the 56 minority employees are selected. (a) Use technology to find the number of ways 14 employees can be chosen from 250. (b) Use technology to find the number of ways 14 employees can be chosen from 194 nonminorities. (c) What is the probability that the committee contains no minorities when the committee is chosen randomly (without bias)? (d) Does your answer to (c) indicate that the committee selection is biased? Explain your reasoning. (a) There are (Use scientific (b) There are (Use scientific ***** ways to choose 14 employees from 250 employees. notation. Round to two decimal places as needed. Use the multiplication symbol in the math palette as needed.) ways to choose 14 employees from 194 nonminorities. notation. Round to two decimal places as needed. Use the multiplication symbol in the math palette as needed.)

A bathtub contained 45 gallons of water when the plug was pulled. Six minutes later, 36 gallons of water remained in the tub. Assume the bathtub drained at a constant rate (in gallons per minute). a) Determine the equation of the linear relation (in slope-intercept form) with x = the # of minutes from when the plug was pulled, and y = the # of gallons of water in the bathtub. Sketch the graph. b) What do the slope and the y-intercept of your line indicate? c)Use your equation to determine how much water the bathtub contain 20 minutes after the plug was pulled. d) Use your equation to determine how long after the plug was pulled the bathtub was empty.

What type of therapy is hoping to be able to replace or insert genetic material to help change people's genetic make-up? A. gene therapy B. radiation therapy C. chemotherapy

State the conclusion based on the results of the test. According to the report, the standard deviation of monthly cell phone bills was $48.38 three years ago. A researcher suspects that the standard deviation of monthly cell phone bills is less today. The null hypothesis is rejected. Choose the correct answer below. OA. There is not sufficient evidence to conclude that the standard deviation of monthly cell phone bills is less than its level three years ago of $48.38. B. There is sufficient evidence to conclude that the standard deviation of monthly cell phone bills is different from its level three years ago of $48.38. C. There is sufficient evidence to conclude that the standard deviation of monthly cell phone bills is less than its level three years ago of $48.38.

When choosing a doctor, you should remember to consider his/her and try to find a doctor you will feel comfortable around. A. bedside manner B. salary requirements C. age or length of practice

Our immune system is comprised of a set of of different specialties with skills that do what against foreign invaders? "soldiers" specialized A. meet and greets B. teach them how to do things C. attack, identify, and kill D. lock them up

A 400-lb cable is 250 feet long and hangs vertically from the top of a building. How much work is required to pull the cable to the top of the building?

Would expect distributions of these variables to be uniform, unimodal, or bimodal? Symmetric or skewed? Explain. a. The number of speeding tickets each student in the senior class of a college has ever had b. Players' scores (numbers of strokes) at the U.S. Open golf tournament in a given year. c. Weights of female babies born in a particular hospital over the course of a year d. The length of the average hair on the heads of students in a large class

Question 5 T of 23 Step 1 of 1 Use the basic proportion necessary. P 100 = to solve the following problem for the unknown quantity. Round your answer to the nearest hundredth, if What is 54% of 353? Kaupad

In a survey of a group of men, the heights in the 20-29 age group were normally distributed, with a mean of 69.4 inches and a standard deviation of 2.0 inches. A study participant is randomly selected. Complete parts (a) through (d) below. ▪▪▪▪▪ The probability that the study participant selected at random is less than 67 inches tall is (b) Find the probability that a study participant has a height that is between 67 and 71 inches. The probability that the study participant selected at random is between 67 and 71 inches tall is. (Round to four decimal places as needed.) (c) Find the probability that a study participant has a height that is more than 71 inches. The probability that the study participant selected at random is more than 71 inches tall is. (Round to four decimal places as needed.) (d) Identify any unusual events. Explain your reasoning. Choose the correct answer below. (Round to four decimal places as needed.) OA. The events in parts (a) and (c) are unusual because its probabilities are less than 0.05. OB. The event in part (a) is unusual because its probability is less than 0.05. OC. There are no unusual events because all the probabilities are greater than 0.05. OD. The events in parts (a), (b), and (c) are unusual because all of their probabilities are less than 0.05.

Question 3 - of 23 Step The distance to your sister's house is 370 miles, and the distance to Denver is 777 miles. If it took 10 hours to drive to your sister's house, how long would you estimate the drive to Denver to take? Answer How to enter your answer (opens in new window) 2 Points hours Keypad Keyboard Shortcuts

Out of the following, which would be considered the most severe type of fracture? A. open fracture B. closed fracture C. partial fracture

A student is attempting to model x² + 2x + 1 using algebra tiles. Which of the following would not be a possible error in the student's thinking? a) Student incorrectly thinks both factors must include (2x + 1). b) Student doesn't realize model must match x²+2x+1. c) Student does not know what rectangular and small square tiles represent. d) Student knows factors are (x+1)(x+1). e) Student does not know how to represent expressions using algebra tiles

3. Consider a vector v where | v | = 5 and v makes an angle of 75° above the negative x-axis. a. Draw a sketch of v, clearly labeling its magnitude and its angle with the horizontal on your sketch. b. Draw the components of v on your sketch. c. Find and label the length of each component of v.

Your body would be an independent, chaotic system if you did not have talk with other organs. A. hormones B. blood cells C. nutrients to

The responses of a sample of 5252 shoppers who were asked how their purchases are made are shown in the table. Find the mean, the median, and the mode of the data, if possible. If any measure cannot be found or does not represent the center of the data, explain why. Does the mean represent the center of the data? Choose the correct answer below. OA. The mean represents the center of the data set. B. The mean does not represent the center because it is the least data entry. OC. The mean does not represent the center because it is the greatest data entry. OD. The mean does not represent the center because it is not a data entry. OE. The data set does not have a mean. ***** your choice How Purchases Are Made Research online and in store, buy in store Search and buy online Search and buy in store Research online and in store, buy online Frequency, f 2267 1121 1050 814

If you make the right choices regarding your you will have good health. A. lifestyle B. friends C. bone structure

A class has 25 students. In how many different ways can four students form a group for an activity? (Assume the order of the students is not important.) There are different ways that the four students can form a group for an activity. (Type a whole number.)

A deli makes sandwiches to order. A customer can choose ham, turkey, or roast beef, and have it served on white, wheat, or rye bread. They can also choose mustard, mayonnaise, ketchup, or hot sauce. How many different sandwiches of one meat, one bread, and one condiment can a customer order? 28 36 32 45

What percentage of the sun's energy actually strikes the earth? A. less than 1% B. approximately 10% C. approximately 50% D. 99.9%

How can hitting someone on the back help them recover from choking? A. It keeps them from passing out. B. The rhythm helps them remain calm and not panic. C. The force can help dislodge the object in their windpipe.

Use the basic proportion P/ 100 =A/B to solve the following problem for the unknown quantity. Round your answer to the nearest hundredth, if necessary. B What is 108 % of 561?

A road running north to south crosses a road going east to west at a point P. One car is driving north along the first road and a second car is driving east along the second road. Assuming they avoid a collision, both cars leave point P at the same time. If the first car is driving at a speed of 45 mph and the second car is driving at a speed of 60 mph, at what rate (in mph) is the distance between the cars increasing two hours later?

Match the relationship in the second pair of words with that of the first pair. anguish: agony :: appreciation : A. recognition B. rejection C. condemnation

The formula T = 21x² +862x+15,552 models the average cost of tuition and fees, T, for private U.S. colleges for the school year ending x years after 2000. Use this formula to project the average cost of tuition and fees at private U.S. colleges for the school year ending in 2020.

A random sample of size 16 from a normal distribution has standard deviation s= 100. Test Ho:o=34 versus H₁:o>34. Use the a= 0.01 level of significance. Part 1 of 5 The hypotheses are provided above. This hypothesis test is a right-tailed Part: 1/5 Part 2 of 5 Find the critical value. Critical value = 995 X ▼test. 3

Change the following fraction to a percent. Write your answer in percent form. Round your answer to the nearest tenth of a percent, if necessary. 6 100

- log₁0 [H*] where [H+] is the concentration of The pH scale for acidity is defined by pH = hydrogen ions measured in moles per liter (M). A solution has a pH of 2.3. Calculate the concentration of hydrogen ions in moles per liter (M). Write the answer in scientific notation. moles per liter. The concentration of hydrogen ions is Enter scientific notation as follows: 1E – 14 would be entered as 1*10^-14

Which is the correct way to rewrite the following sentence fragment? Reaction after the sounds those dreadful cannon were making. A. We had a reaction after the sounds those dreadful cannons were making. B. Those cannons had a reaction; after the sounds we were making. C. Dreadful cannon reaction to the sounds it was making.

The distance to your cousin's house is 703 miles, and the distance to New York City is 185 miles. If it took 19 hours to drive to your cousin's house, how long would you estimate the drive to New York City to take?

You go to the doctor and he gives you 16 milligrams of radioactive dye. After 20 minutes, 4.75 milligrams of dye remain in your system. To leave the doctor's office, you must pass through a radiation detector without sounding the alarm. If the detector will sound the alarm if more than 2 milligrams of the dye are in your system, how long will your visit to the doctor take, assuming you were given the dye as soon as you arrived? Give your answer to the nearest minute. You will spend minutes at the doctor's office.

Question 11 of 38 Ste Use the basic proportion necessary. P 100 = A to solve the following problem for the unknown quantity. Round your answer to the nearest hundredth, if B is 33 % of 487.

The nervous system can be protected by which play an important role in protecting us from various infections. A. a force field B. vaccinations C. diseases

If you have $17 and you spend $12 on baseball tickets, what fraction of your money did you spend? Answer How to enter your answer (opens in new window) 2 Points

Not all types of blood combine. If you try and combine blood that isn't compatible, what will happen? A. bone marrow absorbs it B. antibodies attack it C. all white blood cells will die D. the heart will convert it into the right blood type

12 A Super Happy Fun Ball is dropped from a height of 6 feet and rebounds of the distance from which it 13 fell. How many times will it bounce before its rebound is less than 1 foot? It will bounce times before its rebound is less than 1 foot. How far will the ball travel before it comes to rest on the ground? It will travel feet before it comes to rest on the ground.

Use the basic proportion necessary. P 100 A to solve the following problem for the unknown quantity. Round your answer to the nearest hundredth, if B 43% of what number is 133?

Consider the following numbers. Prev 3, 18, 5 Step 2 of 2: Determine the number of times each number divides into the LCM. Answer How to enter your answer (opens in new window) 2 Points 3 divides into LCM 18 divides into LCM 5 divides into LCM times times times

A little boy is in a treehouse, 25 feet up in a tree. He lifts a 2-lb rope that reaches the ground hand over hand up to the treehouse. How much work (in ft-lbs) is required to pull the rope to the treehouse?

There is a spongy tissue found inside our which produces a lot of cells that become part of our blood. A. cells B. bones C. nerves

Convert the units of measure as indicated. 75 qt = pt

aestion 4 of 17, Step 1 of 1 Correct The distance to your uncle's house is 666 miles, and the distance to San Francisco is 925 miles. If it took 18 hours to drive to your uncle's house, how long would you estimate the drive to San Francisco to take? Keypad

In a study of 420,074 cell phone users, 139 subjects developed cancer of the brain or nervous system. Test the claim of a somewhat common belief that such cancers are affected by cell phone use. That is, test the claim that cell phone users develop cancer of the brain or nervous system at a rate that is different from the rate of 0.0340% for people who do not use cell phones. Because this issue has such great importance, use a 0.001 significance level. Identify the null hypothesis. alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P-value method and the normal distribution as an approximation to the binomial distribution. A. Ho: p=0.00034 H₂: p=0.00034 OC Ho: p=0.00034 H₁ p<0.00034 E Ho: p=0.00034 H₂ p>0.00034 What is the test statistic? (Round to two decimal places as needed) B. Ho: p>0.00034 H₁: p=0.00034 12. Ho p<0.00034 Hy: p=0.00034 Ho: p=0.00034 Hy: p=0.00034