# Math

## Recent Questions

**Math pre algebra**

Write .00025 in words? Is it zero and, twenty five hundred-thousandth(s) Or Twenty five hundred-thousand

**Math**

Please help! I'm behind and need help. Only need help with these questions. Unit 4, Lesson 10 Math test (Quadratic Functions and Equations Unit Test). Thank you! 2. How is the graph of y equals -8x^2 - 2. different from the graph of y equals negative 8x squared.? (1 point) It ...

**Math**

the width of a calculator can be represented by (3x+1) inches. the length of the calculator is twice the width. write a polynomial that represents the area of the calculator.

**Math**

Hank buys his dog food in bulk. He recently just bought a 5 lb. bag of food. If he uses a scooper that holds 1/8 of a cup of food, how many days can he feed his dog?

**Math (pt 2)**

Sorry! I posted only the beginning of this question before. Here's the whole thing. Write an equation to express y in terms of x. X 1 __(blank) 3 4 5 Y 7 12 17 22 __(blank) y = ________(blank) I don't understand this one. Can someone please help????

**Math**

Find the hydrogen ion concentration for Ammonia, with a pH of 11.0. Hint: pH=−log[H+]. ________moles per liter

**Math**

Write an equation to express y in terms of x. X Y

**Math**

A large container at a party holds 9 liters of lemonade. About how many gallons of lemonade does the container hold?

**Math**

In 2009 it was estimated that Brazil had 3,663,000 children born and 1,262,000 people who died. The total population for the country was 198,739,000 people. Calculate the crude birth rate crude death rate annual growth rate and estimated doubling time not taking into ...

**Math**

The current global human population is about 7.5 billion and is growing at an annual rate of 1.11 percent If world population were to grow at this rate for the next year approximately how many people would be added? 8x10 to the what

**math**

A cylinder has a surface area of 339 square centimeters and a radius of 6 centimeters. Estimate the volume of the cylinder to the nearest whole number

**Math**

1/4 + 1/5

**Math**

A population doubles every 18 years. Assuming exponential growth find the following: (a) The annual growth rate: (b) The continuous growth rate is

**Math**

The following data shows the number of potatoes in twenty 2 kg bags. One graph represents Farm A, the other represents Farm B Farm A: 8,9,11,13,13,16,19,19,19,20,21,21,23,25,26,27,30,31,33,33 Farm B: 9,9,11,11,12,13,13,14,15,16,17,17,18,19,20,21,21,22,24,30 You ...

**Math**

A swim team consists of 7 boys and 5 girls. A relay of 4 swimmers is chosen at random from the team members. What is the probability that there are 3 boys on the relay team given that there is 1 girl on the relay team. Express your answer as a fraction in lowest terms or a ...

**MATH**

Owen deposited $900 in a savings account with simple interest. Two years later, he had earned $144 in interest. What was the interest rate?

**math**

1.In order to determine the effects of alcohol on reaction time, 40 randomly selected adult male individuals were assigned to four treatment groups of ten subjects each. The first group was asked to consume the alcoholic equivalent of five beers in a two-hour period, the ...

**Math**

While going downstream boat covers a distance in 48km in 6hrs while returning covering the same distance in a task. find the speed of boat and that of river.

**math**

If dennis rolls 2 number cubes with sides labeled 1 to 6, what is the probability that the sum of the numbers is greater than or equal to 10? daniela flipped a coin and spun a spinner that is divided into four equal- size sectors colored red, yellow, green, and orange. Write ...

**Math (Updated)**

F(x)=9x^3+2x^2-5x+4 and g(x)=5x^3-7x+4. what is f(x)-g(x)? Show all of your steps and write your finial answer in factored form.

**Math**

The perimeter of an isosceles trapezium ( having non-parallel sides equal ) is 7.07 cm. If the parallel sides of the trapezium measure 37/20 cm and 58/25 cm, find the measure of the equal non parallel sides.

**Math**

What is the median of the data set below 77 92 84 97 72 88 77 a. 77 b. 83.9 c.84*** d. 88

**math**

1. Arabella's password consists of one letter followed by 2 digits. What is the probability of correctly guessing arabella's password? 2. If the probability of an event happening is p, what is an algebraic expression that represents the probability that the event does not happen?

**Math**

a submarine is at depth of 3500m below the sea level. it comes up 560m and then goes down by 1250m. if we consider the sea level as zero. what is the current position of submarine

**Math**

a submarine is at depth of 3500m below the sea level. it comes up 560m and then goes down by 1250m. if we consider the sea level as zero. what is the current position of submarine

**Math**

a submarine is at depth of 200 m below the sea level.it descends at uniform rate of 3m/s for 20 secobds. find its depth from the surface after 20 seconds

**math**

what helped homesteaders to survive

**Math**

It is a beautiful sunny day at the fair. The U.V. index for this day is 8, or high, so sunscreen is a must for all the young folk. The effectiveness of sunscreen is indicated by the sunscreen protection factor (SPF). The higher the SPF number the fewer U.V. rays can penetrate ...

**Math**

Eight points are placed on a circle. How many lines are possible if each point is connected to each of the other points

**Math**

Nancy is 6 times as old as Mary. When will she be only twice as old as Mary?

**Math**

A fish caught whose tail weighed 9 pounds. His head weighd as much as his tail and half of his body, and his body weighed as much as his tail and head. How much did the fish weigh.? Is 40 1/2 lbs right or wrong?

**Math**

It is a beautiful sunny day at the fair. The U.V. index for this day is 8 or higher so sunscreen is a must. The effectiveness of sunscreen is indicated by the sunscreen protection factor (SPF). The higher the SPF number the less U.V. rays can penetrate to burn the skin. When ...

**Math**

Which does the Y intercept this function represent Y equals 2+ 4X

**Third grade math**

Emilio was playing marbles in the first round he lost 1/2 of his marbles in the second round he lost 1/4 of his his remaining marbles in the third round he lost 1/3 of his remaining marbles he gave 1 marble to his friend he had 1 marble left how many marbles did he have when ...

**Math help pls!!!**

the sum of the ages of petra and her mother 44. her mother is 8 years more than twice as old as petra. how old are petra and her mother. this dont make sense so pls help me on this math question help me asap pls and ty

**Math**

Need some help with setting it up please. Thank you. Joanna wants to buy a car. Her parents loan her 5,000 for 5 years at 5% simple interest. How much will Joanna pay in interest?

**math**

Can someone explain to me how you can find interest rates? thank you!

**Math**

Two trains start heading toward each other from two cities, the distance between which is 720 km, and meet right in the middle. The second train left 1 hour after the first train, but traveled at a speed 4 km/hour faster than the first train. Find the speed of both trains.

**math**

One pipe can fill a pool in 10 hours. Another pipe can fill the pool in 30 hours. How long would it take them to fill the pool if they were working together?

**math**

You randomly draw marbles from a bag containing both blue and green marbles, without replacing the marbles between draws. If B=drawing a blue marble and G=drawing a green marble, which represents the probability of drawing a blue marble first and a green marble second? A. P(B...

**math**

Suppose a bag contains 3 blue and 2 green marbles. You randomly draw 2 marbles without replacement. If B=drawing a blue marble and G=drawing a green marble, which event does NOT have the same probability as the others? Bag A. GG B. BB C. GB D. BG

**math**

a rectangle has an area of 4(x+3)square units. if the dimensions are doubled what is the area of the new rectangle terms of x.will the ratio of the area of the original rectangle to the area of the larger rectangle be the same for any positive value of x?

**Math**

Determine which ordered pair is a solution of y = -5x + 10. A. (-15, 5) B. (2, 0)•• C. (-1, -5) D. (3, 25) Find the slope of the line through (-9, 10) and (-2, -5). A. -5/7 B. 7/5 C. 5/7 D. -7/5 If so can someone please describe how to get awnsers I really need to ...

**English**

posted by rfvv Thursday, April 5, 2018 at 5:57am 1. I laugh. Don't laugh, I tell myself. Think of tomorrow's math test. That works. I sit quietly. -------------------------------------------------------- In the book, 'Don't laugh' is in italic type. In the book 'Think ...

**Math -- repost for Diana**

Ryan bought 6 apples and 9 peaches for a total of $9.75. Madi bought 4 apples and 5 peaches for $5.75. How much are apples and peaches?

**math**

what is the dimensions of a square? area = 144 cm2

**math**

A leak in a water tank causes the water level to decrease by 3.6×10^−2 millimeters each second. About how many millimeters does the water level in the tank decrease in 5 hours, or 1.8×10^4 seconds? express the answer in scientific notation.

**math**

Order from least to greatest. A.1/4,0.2,1/2 B.1/2,1/4,0.2 C.0.2,1/4,1/2 D.0.2,1/2,1/4

**math**

Kyle divided a drink with a volume of 2 1/2 cups into 1/4 portions. How many portions did he he have?

**math**

A leak in a water tank causes the water level to decrease by 3.6×10^−2 millimeters each second. About how many millimeters does the water level in the tank decrease in 5 hours, or 1.8×10^4 seconds? express the answer in scientific notation.

**math**

Lily has $18. Matt has twice as much of a third of the amount that Lily has, and Carolyn has $23 more than Matt has. How much money does Carolyn have

**Math**

A total of 210 people attended the opening night of a school musical. Student tickets cost 3.00 each while general admission tickets cost 7.50 each. If total sales were $1296, how many general admission tickets were sold? Need help setting up the equations

**Math**

i need help with a few problems. 1. find 3 solutions to the equation y=7x-5

**math**

Maya needs to make a total of deliveries this week. So far she has completed of them. What percentage of her total deliveries has Maya completed?

**Math**

At a farm, animals are fed bales of hay and buckets of grain. Each bale of hay is in the shape a rectangular prism. The base has side lengths 2 feet and 3 feet, and the height is 5 feet. Each bucket of grain is a cylinder with a diameter of 3 feet. The height of the bucket is ...

**math**

What is (f-g)(x)? f(x)=3x^5+6x^2-5 g(x)=2x^4+7x^2-x+16

**math**

What is (f·g)(x)? f(x)=x^4−9 g(x)=x^3+9

**math**

What is (f+g)(x)? f(x)=x^2−36 g(x)=x^3+2x^2−10

**math**

The function f(x) is the number of feet below the surface of the water a diver is at x seconds. After 14 s, the diver reached the maximum distance of 22 ft below the surface of the water. The diver stayed in the water for 20 minutes. What is the practical domain for the ...

**math**

Which characteristic is correct for the function f(x)=−2x3+3x ? neither even nor odd even both even and odd odd

**Math**

.Over a 24-hour period, the temperature in a town can be modeled by one period of a sinusoidal function. The temperature measures 70°F in the morning, rises to a high of 80°F, falls to a low of 60°F, and then rises to 70°F by the next morning. What is the equation for the ...

**Math**

If r = 3, p = 4, and m = 2, what is g? m^2 = ^8sqrt rp/g^2

**Finance Math**

You buy furniture for $700. The retailer finances the entire amount for one year and says you will be charged 9% interest. The retailer uses the add-on method. Assuming your first monthly payment is due in one month, calculate the real annual rate you will pay.

**MATH- APR of a loan**

The owner of an automobile repair center purchased new electronic diagnostic equipment for $12,000. He paid down and then paid 60 monthly payments of $242.81. Determine the APR of the loan to the nearest one-half of a percent.

**Math**

Select all possible values for x in the equation. x cubed=375. 5*the cubed root of 3 the cubed root of 375 75*the cubed root of 5 125*the cubed root of 3 I am trying to do a practice test to prepare for my real test tomorrow and I don't understand the question. Can anyone help...

**Financial math**

A five-year loan of $25,000 at 7.2% compounded quarterly requires quarterly payments. (Round your answer to 2 decimal places.) a. Calculate the interest component of Payment 10. Interest component $ b. Calculate the principal component of Payment 13. Principal component $ c. ...

**math**

Owen and Ethan have $175 together. How much money does each of them have if Ethan has $33 more than Owen?

**math**

Is tan(90-theta) the same as tan(theta)???

**Finance Math**

In 4 years, your son will be entering college and you would like to help financially. You decide to create a college fund and make four annual deposits, starting now. In four years, you would like your son to be able to make four annual withdrawals of $7,500 from the fund (at ...

**Finance Math**

Jennifer just turned 23 and can save $500 per quarter, starting in three months. If Jennifer can earn 7% compounded quarterly, what age will she be when she accumulates $1,000,000?

**Math**

Solve for theta: cos2theta=1/2

**Math**

Mark borrowed $200 at 12% compound interest for two years. If he makes no payments. How much interest will he owe at the end of the second year? A $48.00 B $50.88 C $26.88 D $24.00***

**Math**

Write a sine equation to represent y=-2cos(4x-pi)+2

**Math**

f(x)=-2sqrt{-x+4} find f-1(x), restricting its domain so that f(x) is truly its inverse.

**math**

.Over a 24-hour period, the temperature in a town can be modeled by one period of a sinusoidal function. The temperature measures 70°F in the morning, rises to a high of 80°F, falls to a low of 60°F, and then rises to 70°F by the next morning. What is the equation for the ...

**math**

.In the function f(x), x is replaced with 2x and 1 is added to the function. f(x)=−3sinx What effect does this have on the graph of the function? a. The graph is horizontally compressed by a factor of 2 and shifts up 1 unit b. The graph is horizontally compressed by a factor...

**math**

.The graph of f(x)=cos(x) is transformed to a new function, g(x) , by stretching it horizontally by a factor of 4 and shifting it 1 unit up. What is the equation of the new function g(x) ?

**math**

Please people i need your help whoever knows# Mrs Ally went to the market with sh.10,000 to buy the following items; 5 kg of rice @ sh. 600, 2 kg of meat @ sh. 2000, 2 heaps of onions @ sh. 150, 2 kg of sardines @ sh.700 and bus fare sh. 300 @ journey. How much change was she ...

**Math/Algebra**

The graph of f(x)=sin(x) is transformed into a new function, g(x) , by compressing it vertically by a factor of 1/2 and shifting it 3 units down. What is the equation of the new function g(x) ?

**Math/Algebra**

Let p(x)=90/9+50e ^ −x . What is p(5) ?

**Math/Algebra**

On Dolphin Beach, the high tide is 2.2 meters and only occurs at 12 a.m. and 12 p.m. The low tide is 1 meter and only occurs at 6 a.m. and 6 p.m. Which function models the height of the tide t hours after 12 a.m.? a. h(t)=0.6cos(πt/6)+1.6* b. h(t)=0.6sin(πt/6)+1.6 c. h(t)=1....

**Math/Algebra**

The equation yˆ=−6.2x2+41.5x−5.6 approximates the average number of cars that pass through an intersection x hours after 3:00 p.m. What is the best estimate for the average number of cars that pass through the intersection at 5:30 p.m.? a. 35 b. 47* c. 59 d. 63

**math**

kevin correctly answered 75% of 32 questions . how many questions did kevin answer correclty

**Math**

What is the solution set for the quadratic equation x^2 + 6x = -5? I’m honestly confused and don’t know what to do. I don’t think the answer could be F {1} or J {-5} because it says sets. Which leaves me with G {-1,-5} and H{1,5}. Help?

**math**

Find the area of the figure. Round to the nearest tenth if necessary. D(0,2), E(4, -2), F(8,2) instead of d and f connecting with a straight line, they are connected with half a circle/curve The highest point this semicircle part reaches is (4,6)...if im describing it in a ...

**math**

Find the area of the figure. Round to the nearest tenth if necessary. T(-1,8), U(3,5), V(4,0), R(-3,0), S(-3,5)

**Math**

Residents of a small city voted on whether to allow a developer to build a shopping center. The number of voters in favor of the shopping center was 4,400. The number of voters against the shopping center was 17,600. What percent of voters were in favor of building the ...

**math**

the moon travels about 1.42 * 10^7 meters of its orbit in one twenty-four hour period. which of the following is the most reasonable estimate for the distance the moon travels around the earth in 27 days?

**Math**

A parabola has intercepts of x = -2, x = 3, and y = -4 how do I write this into these forms: the intercept form (y = a (x – m)(x – n)) and in standard (y = ax2 + bx + c) form

**MATH**

ratio of rate of diffusion of O2 and CH4

**Finance Math**

1. Your average daily balance on your charge card for the month of July is $855.28. If your card carries an annual interest rate of 15.4%, what will your finance charge be for July? 2. You buy a car from your neighbor at a price of $9,000. You pay $500 down and pay 9.5% on the...

**Math, Finanace**

Your annual salary 12 years ago was $14,500; it is now $25,000. What is the average annual rate of increase?

**math**

How many rectangles can you find with an area of 32?

**Math**

The values of 4+(1/4+(1/4+1/4+..upto infinity... I don't know how to type that fraction . I have taken a photo and uploaded here. ibb[dot]co/fLqhxH Please help me in solving

**math**

At midnight the temperature was 21°c. Two hours later it was 3° colder. What was the temperature then

**math**

Guys help me this question. four yrs ago, Katie was twice as old as Anne was then. In 6 yrs, Anne will be the same age that Katie is now.How old is each now

**math**

Please people i need your help whoever knows# Mrs Ally went to the market with sh.10,000 to buy the following items; 5 kg of rice @ sh. 600, 2 kg of meat @ sh. 2000, 2 heaps of onions @ sh. 150, 2 kg of sardines @ sh.700 and bus fare sh. 300 @ journey. How much change was she ...

**Math**

A communications tower is located at the top of a steep hill, as shown in the figure below. The angle of inclination of the hill is 68°. A guy wire is to be attached to the top of the tower and to the ground, 150 meters downhill from the base of the tower. The angle formed by...

**Math**

Maria is 7 years older then her brother Robert and in 2 years her age will be four times what Robert’s age was three years ago. Find their present ages.

**Math**

Find the maximum area of a rectangle inscribed in the region bounded by the graph of y = (3-x)/(2+x) and the axes. (Round your answer to four decimal places.)