Math Questions

An investment company pays 8% compounded semiannually. You want to have $17,000 in the future. (A) How much should you deposit now to have that amount 5 years from now? (Round to the nearest cent.) (B) How much should you deposit now to have that amount 10 years from now? (Round to the nearest cent.)

In a state's Pick 3 lottery game, you pay $1.48 to select a sequence of three digits (from 0 to 9), such as 600. If you select the same sequence of three digits that are drawn, you win and collect $354.12. Complete parts (a) through (e). a. How many different selections are possible?

What is -9.2(8x-4) +0.7(2+6.3x) simplified? -69.19x-32.39 -69.19x + 38.2 72.2x + 41.21 75x-338.2

Use the disk method or the shell method to find the volumes of the solids generated by revolving the region bounded by the graphs of the equations about the given lines. y = x, y = 0, X = 6 (a) the x-axis (b) the y-axis (c) the line x = 6 (d) the line x = = 9

A city's population in the year x = 1959 was y = 1,775,650. In 1953 the population was 1,774,750. Compute the slope of the population growth (or decline) and choose the most accurate statement from the following: The population is increasing at a rate of 150 people per year. The population is increasing at a rate of 50 people per year. The population is decreasing at a rate of 250 people per year. The population is decreasing at a rate of 150 people per year. The population is decreasing at a rate of 50 people per year. The population is increasing at a rate of 250 people per year.

A freight company has shipping orders for two products. The first product has a unit volume of 10 cu ft and weighs 50 lb. The second product's unit volume is 3 cu ft, and it weighs 40 lb. If the company's trucks have 2,320 cu ft of space and can carry 21,100 lb, how many units of each product can be transported in a single shipment with one truck using the entire volume and weight capacity? first product second product

The height above ground (in feet) of a ball dropped from the top of a tall building after t seconds is given by the polynomial h=-16t^2 +53. What is the height after 1 second? After 5/4 What is the height after 1 second?

Lola needs to rent a ballroom for a formal event. Ballroom S charges $52.50 per hour and one-time rental fee of $500. Ballroom T charges $62.50 per hour and a one-time rental fee of $300. Which inequality can be used to find x, the minimum number of hours rented so that the total cost at Ballroom S is less than the total cost at Ballroom 7? 52.5r+ 500 > 62.5r + 300 52.5 +500x> 62.5 +300x 52.5 +500x < 62.5 +300x 52.5x + 500 < 62. 5x + 300

A parabola that passes through the point (3, 52) has vertex (-7, 12). Its line of symmetry is parallel to the y-axis. Find equation of the parabola: y = When x = 13, what is the value of y: What is the average rate of change between x = -7 and x = 13:

Given a polynomial that has zeros of -5, 3i, and -3i and has a value of 432 when x = 3. Write the polynomial in standard form ax^n + bx^n-1 +....

A ladybug crawls around the outside of a rectangle that measures 12 cm by 15 cm. The ladybug stays exactly 1 cm from the rectangle at all times to form a larger figure. How far does the ladybug crawl in one trip around the figure? ? What is the area of the new rectangle bound by the path of the bug? ?

Convert the measurement 2710 g= kg

Taxes: The Internal Revenue Service reports that the mean federal income tax paid in the year 2010 was $8040. Assume that the standard deviation is $4900, The IRS plans to draw a sample of 1000 tax returns to study the effect of a new tax law. (a) What is the probability that the sample mean tax is less than $7800? Round the answer to at least four decimal places.

A cartographer used a scale of 1 inch:300 meters for the heights of different mountains. If the actual height of one of those mountains is 3,600 meters, what is its height on the map? 100 inches 1,080 inches 12 inches 108 inches

Solve equation by the quadratic formula. List the solutions, separated by commas. 2r² - 3r+13= 8

Suppose the number of prisoners held in a certain type of prison, measured in thousands, can be described by the quadratic equation P = -1.94x²+76.35x+737. The variable x represents the number of years since 1990. According to the equation, how many prisoners were there in the year 2001 (x = 11) and 2006 (x = 16)? There were approximately thousand prisoners in 2001. (Simplify your answer. Round to two decimal places as needed.) There were approximately thousand prisoners in 2006. (Simplify your answer. Round to two decimal places as needed.) *****

A Kite 50 feet above the ground moves horizontally at a speed of 9 ft/sec. At what rate is the angle between the string and the ground decreasing when 140 feet of string is out?

Convert the measurement. 3 yd = inches

Bert is going to claim a depreciation tax credit for his business car. The car costs $28,000 when new, and Bert anticipates it will be worth $16,000 three years later. (d) How long does it take for the car to lose all of its value? (c) Express the value V of the car as linear function of time t, the number of years after the car was purchased. (e) In the context of this problem, what is the range of the linear function?

The projected worldwide spending for a certain type of service, in millions of dollars, for the years 2006-2011 can be estimated by the polynomial s= -35.4x² +924.6x +493, where x is the number of years after 2006. Find the projected worldwide spending for x=0, x=2, and x = 5. Use the polynomial to estimate the projected worldwide spending for this service, in millions of dollars, for the year 2006 (x = 0). $million (Type an integer or a decimal.)

Graph the following quadratic function. f(x) = 2x² + 4x + 5 Find the vertex of the function.

For what values of x does the graph of f(x) = x³ + 2x² + x + 16 have a horizontal tangent?

Leo invested $1900 in an account with annually compounded interest. After 3 years, he had $2275 in the account. What was the interest rate of the account? Round your answer to one decimal place. Do not write the percent sign. Provide your answer below:

Determine whether the ordered pair is a solution to the inequality. y≥(x-1)² (a) (-4, 31) (b) (3, 0) (c) (-3,-15) (a) Is the ordered pair (-4, 31) a solution to the inequality?

Darryl made a deposit into an account that earns 7% annual compound interest. After 36 months, the value of his account was $1,041.29. What was the approximate amount of Darryl's initial deposit?

Hunter makes shoelaces for the cleats to earn money for the football team. Each shoelace needs to measure 50 3/4 inches long. He needs to make 4 shoelaces. How many inches does he need to make the 4 shoelaces?

Solve the following equation. Be sure to check your proposed solution by substituting it for the variable in the given equation. 7x-19=-124 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The solution set is ) (Type an integer or a simplified fraction) B. The solution set is (x] x is a real number). C. The solution set is.

The position function of a particle is given by s = 2t³ - 15t²-81t, t> 0. where s is measured in meters and t in seconds. Find all values of t> 0 for which the particle is moving at a velocity of 3 m/s t=

A pumpkin is launched 19.6 meters per second from a 58.8 meter tall platform. The equation for the object's height s at time t seconds after launch is s (t)=-4.92t2 +19.6t+58.8, where s is in meters. When does the pumpkin strike the ground?

The ages of 10 grooms at their first marriage are listed below. Find the midquartile. 35.1 24.3 46.6 41.6 32.9 26.8 39.8 21.5 45.7 33.9 34.2 43.7 34.1 34.5

x+2y-2z = 10 -3x+4y+z=-5 -5x+y+3z=-21 Find the unique solution to this system of equations. Give your answer as a point.

Josie and Red are two dogs standing next to each other at the dog park. Josie starts running straight west and Red starts running straight east. After 22 seconds, the two dogs are 1,100 feet apart. Suppose Red runs 4 feet per second faster than Josie. How fast were each of the dogs running?

A gardener has 880 feet of fencing to fence in a rectangular garden. One side of the garden is bordered by a river and so it does not need any fencing. shorter side: What dimensions would guarantee that the garden has the greatest possible area? ft (feet) longer side:

Find the x-intercept(s) algebraically. f(x)=2x²-9x+9 X= (Type an exact answer, using radicals needed. Use integers or fractions for any numbers in the expression. Type each solution only once. Use a comma to separate

Solve the system by elimination or by any convenient method. (If the system is dependent, enter DEPENDENT. If there is no solution, enter NO SOLUTION.) x + 2y = 3 3x+6y= 12 (x, y) =

If a car travels 37 miles per gallon of fuel (in other words, the car does 37 mpg), how many kilometers does it travel per liter of fuel? Use the conversion factors on page 55 (that is, use 1 mile 8/5 km and 1 gallon = 8 pints and 1 liter ≈ 2 pints). The car trav's about km on one liter of fuel

Graph the following quadratic function. f(x) = x² + 4x Find the vertex of the function.

Suppose you wish to take out a loan for $15,000 at an annual interest rate of 5.25%, compounded monthly. If you want each payment to be as close as possible to $200.00, how long should the period of the loan be? Choose the correct answer below. 10 years 9 years 8 years 7 years

(a) Approximate the probability that 71 or more have hypertension. The probability that 71 or more have hypertension is approximately.

Tomas needs exactly 6 potatoes to make 12 potato pancakes. Which of the following statements are true? Tomas needs exactly 12 potatoes to make 24 potato pancakes. Tomas needs exactly 18 potatoes to make 36 potato pancakes. Tomas needs exactly 24 potatoes to make 44 potato pancakes. Tomas needs exactly 30 potatoes to make 60 potato pancakes. Tomas needs exactly 36 potatoes to make 78 potato pancakes.

Fourteen of the 100 digital video recorders (DVRs) in an inventory are known to be defective. What is the probability that a randomly selected item is defective?

In ΔCDE, M∠C = (x − 4)°, m∠D = (11x – 11)°, and m∠E = (x + 13)°. Find m∠C.

Find the LCM of the set of algebraic expressions. 20y², 12yz, 15z

Consider the following equation of a circle. (x + 3/7)² +y ² = 25/9 Find the center, (h. k).

The last time Brea played softball, she hit the ball 35% of the times she was at bat. Based on this information, how many times will Brea hit the ball the next time she plays softball if she is at bat 20 times? F 4 G 7 H 15 J 6

The owner of Kensington Florist is assembling flower arrangements for Valentine's Day. This morning, she assembled 15 small arrangements and 15 large arrangements, which took her a total of 195 minutes. After lunch, she arranged 12 small arrangements and 7 large arrangements, which took 121 minutes. How long does it take to assemble each type?

Your teacher will give you a set of four function machines. Your team's job is to get a specific output by putting those machines in a particular order so that one machine's output becomes the next machine's input. As you work, discuss what you know about the kind of output each function produces to help you arrange the machines in an appropriate order. The four functions are reprinted below. f(x)=√x h(x) = 2x - 7 g(x) = -(x - 2)² k(x) = - x/2 -1 a. In what order should you stack the machines so that when 6 is dropped into the first machine, and all four machines have had their effect, the last machine's output is 11? b. What order will result in a final output of 131, 065 when the first input is 64?

According to a survey, 10% of Americans are afraid to fly. Suppose 1,100 Americans are sampled. a. What is the probability percentage that 121 or more Americans in the survey are afraid to fly? b. What is the probability percentage that 165 or more Americans in the survey are afraid to fly? c. What is the probability percentage that 8% or less of the Americans surveyed answered they were afraid to fly?

A sales team estimates that the number of new phones it will sell is a function of the price that it sets. It estimates that if it sets the price at a dollars, it will sell f(x) = 6,818 - 7x phones. Therefore, the company's revenue is x(6,818 - 7x). Find the price that will maximize the company's revenue. Select the correct answer below: 511 487 489 491 507

The function g is defined as follows. g(x)=4x²+3 If the graph of g is translated vertically downward by 8 units, it becomes the graph of a function f. Find the expression for f(x). Note that the ALEKS graphing calculator may be helpful in checking your answer.