Basic Math Questions and Answers

Resolve the given vector into its x-component and y-component. The given angle 0 is measured counterclockwise from the positive x-axis (in standard position). Magnitude 2.11 mN, θ = 187.41°

A parabola has its directrix at x = 4 and its focus at (8, k). Which of the following could be the equation of the parabola? Select all that apply. a. y =1/8 (x-8)² +6 b. 4y= (x-8)² + 20 c. x=1/8 (y + 2)² + 6

Determine the resultant of the vectors with the given magnitudes and directions. Positive angles are measured counterclockwise from the positive x-axis, and negative angles are measured clockwise from the positive x-axis. A: 557, 152.0 B: 1244, 232.0 The magnitude of the resultant is (Round to one decimal place as needed.)

At a county fair truck pull, two pickup trucks are attached to the back end of a monster truck. One of the pickups pulls with a force of 4000 pounds and the other pulls with a force of 3000 pounds with an angle of 45° between them. Find the resultant force of the two trucks. The resultant force is pounds. (Round to the nearest hundred pounds as needed.)

At a school-sponsored car wash, the fees charged were: $5 per car, $8 per pickup truck, $10 per full-size van. Twice as many cars were washed as pickup trucks. The amount collected for washing cars and pickup trucks was $360. A total of $410 was collected at the car wash. Find the number of cars washed. A 40 cars B 25 cars C 20 cars D 65 cars

Roger has a house in Telluride, Colorado, but starts a new job in Denver. Every Monday, he drives his car 332 miles from Telluride to Denver, spends the week in a company apartment, and then drives back to Telluride on Friday. He doesn't use his car for anything else. After 20 weeks of this, his odometer shows that he has travelled 240,218 miles since he bought the car. How many miles were on his car when he started the job? 664 13280 226938 253498 332

The angle between two forces of 34 N (Newtons) and 47 N is 62°. Find the magnitude of the resultant force. The magnitude of the resultant force is

Solve the system of linear equations by graphing. y=2x 3x+y=5

Provide an appropriate response. Find the area under the standard normal curve to the left of z = 1.25. 0.8944 0.7682 0.1056 0.2318

2. Suppose you have a can of paint that you'll use to paint a rectangle whose length is 5 inches more than its width. If the can covers 500 in², what will the dimensions of the rectangle be? [WISE, VIZ]

Leila received a $70 gift card for a coffee store. She used it in buying some coffee that cost $8.14 per pound. After buying the coffee, she had $37.44 left on her card. How many pounds of coffee did she buy? pounds X

Boris is putting money into a savings account. He starts with $750 in the savings account, and each week he adds $60. Let S represent the total amount of money in the savings account (in dollars), and let W represent the number of weeks Boris has been adding money. Write an equation relating S to W. Then use this equation to find the total amount of money in the savings account after 12 weeks. Equation: s= 350 +60] Total amount of money after 12 weeks: $1010 X 0=0 ?

Quadrilateral ABCD has vertices A = (2, 5), B=(2, 2), C= (4, 3) and D= (4, 6). Quadrilateral A'B'C'D' is formed when Quadrilateral ABCD is dilated by a scale factor of 2. Which statement is true? Select all that apply Choose all that apply: None of the answers apply The side lengths of Quadrilateral ABCD and Quadrilateral A'B'C'D' are the same. The angles of Quadrilateral ABCD and Quadrilateral A'B'C'D' are the same.

Given f(x) = 4x³ - 16x² +13x-3, answer the following. Part: 0 / 2 Part 1 of 2 (a) Factor f(x), given that 3 is a zero. f(x) = 0 0°

Find the remaining five trigonometic functions of 8. sin 8= 8 in quadrant II 7 8

armen got a prepaid debit card with $30 on it. For her first purchase with the card, she bought some bulk ribbon at a craft store. The price of the ribbon was 3 cents per yard. If after that purchase there was $27.27 left on the card, how many yards of ribbon did Carmen buy? yards X S ?

nts: 0 of The exponential model A = 993.4 e 0.0231 describes the population, A, of a country in millions, t years after 2003. Use the model to determine when the population of the country will be 1064 million. KOLLERID The population of the country will be 1064 million in Round to the nearest year as needed.)

If the half-life of an element is 67 yr and the initial quantity is 3 kg, write a function of the form Q(t) = Qe^kt to model the quantity the element left after t years. Round k to 4 decimal places. Select one: a. Q(t)=67e^-0.0103t b. Q(t)=67e^-0.0034t c. Q(t) = 3e^-0.0103t d. Q(t) = 3e^-0.0034t

An open-top box is to be made from a square piece of cardboard that measures 6 inches by 6 inches by removing a square from each corner and folding up the sides. What are the dimensions and volume of the largest box that can be made in this way? length width height volume in in in in 3

Use the formula t= In 2 that gives the time for a population, with a growth rate k, to double, to answer the following questions. k The growth model A=9e 0.0061 describes the population, A, of a country in millions, t years after 2003. Part 2 of 2 a. What is the country's growth rate? 0.6% b. How long will it take the country to double its population? years (Round to the nearest whole number.) CELLE Points: 0.5 of 1 Save

Use a calculator with a y key or a key to solve the following. The exponential function f(x)=560(1.032)* models the population of a country, f(x), in millions, x years after 1974. Complete parts (a) — (e). ***** a. Substitute 0 for x and, without using a calculator, find the country's population in 1974. The country's population in 1974 was 560 million. b. Substitute 22 for x and use your calculator to find the country's population, to the nearest million, in the year 1996 as modeled by this function. million. The country's population in 1996 was

Consider the equation 1.5x + 4.5y = 18. For each question, explain or show your reasoning. 1. If we graph the equation, what is the slope of the graph?

Axel swam 32 laps at the pool. The number of laps that he swam was 2 more than 3 times as many laps as his friend Kelly swam. Which of the following equations could you use to determine the number of laps that Kelly swam?

A model rocket is launched from the ground. The height, s, of the rocket above the ground at time t seconds after it is launched can be found by the formula s=-16t² +67t. Find how long it will take for the rocket to reach a height of 44 feet. seconds (Round to two decimal places as needed. Use a comma to separate answers as needed.)

In a genetics class, 6 students have GREEN eyes, 3 students have BLUE eyes, and 11 have HAZEL eyes. If a single student is picked at random, what is the probability that their eyes are GREEN or HAZEL? • Provide the final answer as a fraction.

Troy opened a savings account and deposited $300.00. The account earns 6% interest, compounded annually. If he wants to use the money to buy a new bicycle in 3 years, how much will he be able to spend on the bike? Use the formula A = P 1 + where A is the balance (final amount), P is the principal (starting amount), r is the interest rate expressed as a decimal, n is the number of times per year that the interest is compounded, and t is the time in years. Round your answer to the nearest cent. 7

Logan earned $8 for each dog he walked last summer. This summer, he raised his fee to $9 per dog. Express the change in Logan's fees as a percent. Round to the nearest tenth of a percent. Enter the correct answer in the box.

An elevator can carry 26 adults or 30 children at one time. During the course of a day, the elevator carries a full passenger load 46 times. If all the passengers were children, how many more people would the elevator carry than if all the passengers were adults?

Vina has $4.60 in quarters, dimes and nickels in her purse. She has seven more dimes than quarters and six more nickels than quarters. How many of each coin are in her purse? nickels dimes quarters

Write an expression that is equivalent to 3y - 9. A common factor of 3 and 9 is 3y - 9 = So, 3y - 9 is equivalent to Why can you use properties of operations to write equivalent expressions?

Sam opens a savings account at the start of the school year. The amount of money in Sam's college savings account is given by the function: A(w): = 2400-60w Where w= the number of weeks since school started and A(w) represents the amount of money, in dollars, left in the account w weeks after school started Find the missing value in the ordered pair described by the function notation and then choose the option that best describes the meaning of that ordered pair. A(0) means... O After 0 weeks of school Sam has $2400 in the account. After 0 weeks of school Sam has $2,340 in the account. After 40 weeks of school Sam has $0 in the account. O After 0 weeks of school Sam has $40 in the account. O After 60 weeks of school Sam has $0 in the account.

Algebra 2 > T.13 Compound interest Troy opened a savings account and deposited $300.00. The account earns 6% interest, compounded annually. If he wants to use the money to buy a new bicycle in 3 years, how much will he be able to spend on the bike? nt I Use the formula A = P 1 + where A is the balance (final amount), P is the principal (starting amount), r is the interest rate expressed as a decimal, n is the number of times per year that the interest is compounded, and t is the time in years. Round your answer to the nearest cent.

A population of bears increased by 50% in 4 years. If the situation is modeled by an annual growth rate compounded continuously, which formula could be used to find the annual rate according to the exponential growth function? Leave your answer in terms of In.

When Deion was born, his grandfather gave him a 7.5-gram gold coin as a present. Today, Deion read in the newspaper that a gram of gold is worth $50.04. How much money is the gold coin worth?

4. A car traveled 180 miles at a constant rate. a. Complete the table to show the rate at which the car was traveling if it completed the same distance in each number of hours. b. Write an equation that would make it easy to find the rate at which the car was traveling in miles per hour r, if it traveled for hours. 180/F travel time (hours) 5 4.5 3 2.25 rate of travel (miles per hour)

Noah operates an orange juice stand. On Monday he used 3/10 of a bag of oranges. On Tuesday he used 1/3 as many oranges as on Monday. How many bags of oranges did Noah use on Tuesday? Write your answer as a fraction or as a whole or mixed number. bags

Mary needs to borrow $11,000. She can borrow the money at 5.5% simple interest for 3 3 yr. (a) How much total interest would Mary pay at 5.5% simple interest? (b) How much total interest would Mary pay at 5% interest compounded continuously? (c) Which option results in less total interest? Part 1 of 3 (a) How much total interest would Mary pay at 5.5% simple interest? At 5.5% simple interest, the total interest Mary would pay is $2733.875 Part: 1/3 Part 2 of 3 X (b) How much total interest would Mary pay at 5% interest compounded continuously? At 5% interest compounded continuously, the total interest Mary would pay is $ or she can borrow at 5% with interest compounded continuously for X S Submit Assignm Acressi

An account is opened with an initial deposit of $24,000 and earns 2.5% interest compounded quarterly. What will the account be worth in 15 years? Since we are dealing with money, round 2 decimals.

If, in a monopoly market, the demand function for a product is p = 130 -0.40x and the revenue function is R = px, where x is the number of units sold and p is the price per unit, what price will maximize revenue? $

A shipment of 1000 small lab mice arrives at the animal care facility with a nominal weight of 10 g per mouse. A simple random sample of 100 mice is selected and weighed, and the resulting 95% confidence interval for the mean weight is from 9.9 g to 10.5 Which of the given statements is correct? O About 95% of samples will have mean weights between 9.9 g and 10.5 g. O About 95% of individual mice in our sample weigh between 9.9 g and 10.5 g. This type of quality control is repeated across the country whenever a shipment of mice is received. About 95% of the quality control tests will have confidence intervals that contain the true mean. About 95% of individuals will have confidence intervals that contain the value of 10.

In AJKL, JL is extended through point L to point M, m/LJK = (2x + 2)°, m/KLM = (8x - 16), and m/JKL = (3x+6)°. Find m/KLM.

An individual plans to buy a house for $200,000. She will put 20% down, and finance the rest with a 20 year mortgage at a fixed rate of 5%. a) What will be the monthly payment for the loan? b) In total, how much interest will be paid over the term of the loan? c) How much interest is paid in the first month?

4. The doubling time for a city's population is 10 years. In 30 years the population will be times the initial population a) 2 b) 3 c) 4 d) 8 5. Which of the following is not a good approximation of doubling time? a) A population growing at 2% per year will double in 35 years. b) A population growing at 1% per year will double in 70 years. c) A population growing at 10% per year will double in 7 years. d) A population growing at 35% per year will double in 2 years. 6. The half-life of a drug in the bloodstream is 14 hours. What fraction of the original dose is left in the bloodstream after 56 hours? a) 1/4 b) 1/8 c) 1/16 d) 1/32

Dance Company Students The number of students who belong to the dance company at each of several randomly selected small universities is shown below. Round sample statistics and final answers to at least one decimal place. 30 26 25 26 21 29 21 40 Send data to Excel 47 47 21 35 35 35 2 Estimate the true population mean size of a university dance company with 80% confidence. Assume the variable is normally distributed. 0<<0 X

3. Write an equation to model the scenario, and then solve it. (2 pts) Mariah filled her dog treat jar with 72 dog treats. Her dogs eat 4 treats each day. How many treats are left in the jar after one week (7 days)?

Country A has an exponential growth rate of 4.9% per year. The population is currently 5,025,000, and the land area of Country A is 29,000,000,000 square yards. Assuming this growth rate continues and is exponential, after how long will there be one person for every square yard of land?

Write a system of linear equations in three variables, and then use matrices to solve the system. A ceramics workshop makes wreaths, trees, and sleighs for sale at Christmas. A wreath takes 3 hours to prepare, 2 hours to paint, and 10 hours to fire. A tree takes 15 hours to prepare, 3 hours to paint, and 4 hours to fire. A sleigh takes 4 hours to prepare, 16 hours to paint, and 7 hours to fire. If the workshop has 93 hours for prep time, 74 hours for painting, and 107 hours for firing, how many of each can be made? O 3 wreaths; 7 trees; 4 sleighs O 7 wreaths; 4 trees; 3 sleighs 8 wreaths; 5 trees; 4 sleighs O4 wreaths; 3 trees; 7 sleighs

Find the zeros of the following polynomial. Include complex zeros if any occur. P(x) = (x+3)(x² - 2x + 3) (Give your answer in the form of a comma-separated list if needed. Express numbers in exact form. Use symbolic notation and fractions where needed.) x =

You perform a statistical test to examine if a new machine that fills soft drink cans has a higher mean amount filled than the old machine. Which of the given statements is an example of a Type II error? Conclude that the new machine increased the mean amount filled when in fact it does not. Conclude that the new machine did not increase the mean amount filled when in fact it does. Conclude that the new machine did not increase the mean amount filled when in fact it does not. Conclude that the new machine increased the mean amount filled when in fact it does.

Courtney and Joe are power washing the patio. Courtney can power wash the entire patio in 7 hours while it takes Joe just 5 hours to power wash the patio. How long will it take Courtney and Joe to power wash the patio together? Choose the equation that should be used to solve this problem and state the solution. O7t + 5t = 12; t = 1 hour O = + = 1; t = 2 hours 7t + 5t = 1; t = 12 hours O + = 1; t = 5 hours