# Math

## Recent Questions

**MAth**

the perimetre of rectangle is 240cm .if length is increased by 10% and breadth is decreased by 20% the perimetre remains same. find the length

**math**

The marginal cost function is given by dc/dq=0.08q^2-1.8q+2.5 where c is the total cost in producing q units of product. The fixed cost is 5000. Find the total cost for producing 1000 units

**math**

If a manufacturer's average-cost equation is C=0.0001q^2-0.02q+5+5000 ____ q

**math**

Differentiate y=x^-2(4+x^-3)

**Math, Ratio and Proportion**

Jeff mowed 2/3 of a lawn in 52 minutes. At that rate, How long would it take him to mow the whole lawn?

**math**

Hi, I was working on my math homework and I was stumbling on these problems. I tried looking at the solutions but my answers were completely off. Here are the ones I'm stuck on: If vectors O(0,0,0), A(6,0,0), B(6,-sqrt(24), sqrt(12)), and C(0,-sqrt(24), sqrt(12)) form a square...

**Math**

How much money would the class earn it it recycled during the next 3weeks. If for every 3/5 weeks profit is $85

**Math**

I have several of these questions I just need help with this one to do the rest. How many weeks would it take to sale cookies in order to earn $5,0000. If for every 3 weeks profit is $500. Is it 500/5000

**finite math**

Suppose that two cards are randomly selected from a standard 52-card deck. (a) What is the probability that the first card is a queen and the second card is a queen if the sampling is done without replacement? (b) What is the probability that the first card is a queen and the ...

**AP math**

how do I solve this? 0.02e^-0.244t=0.06 I know I divide by the constant to get : e^-0.244t=3 but I'm not sure what to do after. do I take ln of both sides?

**math**

iodine 131 has a half life of 8 days. If 5 mg are stored for a week, how much is left? How many days does it take before only 1 mg remains? An explanation for each step would be nice please. I want to learn how to do these problems for my upcoming exam.

**math**

6=e^5r I have no idea how to do this please help Thanks

**math**

If you invest $1000 at 3% interest compounded semiannually. when will the investment be worth $1500 ? 1000(1 +.03/2)^q= 1500 not sure if this is right ? thanks

**Math**

On a scale drawing inch = 10 miles if the length of the road of this scale is 4inches how would you find the length of the road

**Math**

-3+-8

**math**

Two teams, the Exponents and the Radicals, square off in a best of 5 math hockey tournament. Once a team wins 3 games, the tournament is over. The schedule of the tournament (for home games) goes: E-R-E-R-E If the Exponents are playing at home, there is a 60% chance they'll ...

**MATH**

IF FENCING IS $12 A METRE HOW MUCH WILL A FENCE COST

**Math**

If there is a laws of 40 students and only 85% of the class passed how many passed the test

**Math**

13. Andrea, a cyclist, uses a graph to track her speed and distance. The graph below shows Andrea's cycling data for a one hour bike ride. At one point, Andrea took a break from running. When was the break, and how long did the break last? A. At 10 minutes, she took a 10-...

**math**

Nasmin will construct this object from sheet metal, then coat it with enamel. a) Determine the volume of the object. b) Determine the surface area to be covered with enamel. All exposed faces are to be covered. 20cm and 15cm, 13cm, 6cm and 4cm. please show your work so i can ...

**Math**

The librarian was checking the thicknesses of several books and found that the average thickness of a book was 1.8 centimeters. She found this by averaging the thickness of five different books. Four of the thicknesses were 1.4cm, 1.9 cm, 2.1 cm, and 2.4 cm. What was the ...

**math**

Jim is setting up a rectangular dog run in his backyard. He buys six 3-foot sections of fencing and a 3-foot wide gate. What are the dimensions of the dog run with the greatest area in each situation? a) Jim uses the yard fence for one side of the dog run. b) Jim uses the ...

**math**

Can A arch tesselate

**math**

What is 1.07 x 10 to the 4th power in standard form?

**Math**

in the election 46% of the class voted for Celina. if there are 50 members in the class, how many votes did Celina receive? please keep in mind I have switched classes and do not know some of the content that they have learned before I came to the class

**math**

In a recent student government election, the ratio of students who voted for the winner to all the students who voted was 0.68. The number of students who voted was 75. How many votes did the winner get?

**Math - Calculus**

a) Find the area of the region R bounded by the graphs of the equations y=2x−x^2, x=0, and y=0. b)The line y=cx, where c>0, divides R into two subregions. Compute the value of c for which the two subregions have the same area.

**math**

A model of a rectangular patio at a landscaping business will be enlarged by a scale factor of 2 when it is installed in a customer’s back yard. The area of the new enlarged patio will be 160 square feet. Which is the area of the landscaper’s model? 10 square feet 20 ...

**Math**

i need this answer A.S.A.P what is the volume of pyramid C if the volume of pyramid D is 4608 m cubed and the height of pyramid D is 24 and the height of pyramid C is 12

**Math**

You roll two fair dice. Let E be the event that an even total shows on the dice. Let F be the event that a six shows on at least one of the dice. Find P(F) and P(F|E). Choices: P(F)=1/3; P(F|E)=1/13 P(F)=1/3; P(F|E)=5/18 P(F)=11/36; P(F|E)=7/18 P(F)=11/36; P(F|E)=5/18? Would ...

**MATH**

Determine which state is more poorly represented. State A with a population of 277,200 and 11 representatives or state B with a population of 576,000 and 16 representatives. State A is more poorly represented because it has the smaller average constituency. State B is more ...

**Math**

a light elastic string attached to two points A and B on the same horizontal level has a wall picture of mass 1.4kg attached to its midpoint. The weight of the wall picture causes the elastic card of 40cm to a new length of 50cm. Draw a diagram to represent the above ...

**Math**

James has set up an ordinary annuity to save for his retirement in 19 years. If his monthly payments are $250 and the annuity has an annual interest rate of 7.5%, what will be the value of the annuity when he retires? I am studying for my math final and I do not remember how ...

**Check My Math Answers Please!**

1) [I don’t need any help with this question.] 2) [I don’t need any help with this question.] 3) A model rocket is launched from a roof into a large field. The path of the rocket can be modeled by the equation y=-0.04x^2+8.3x+4.3, where x is the horizontal distance, in ...

**Math**

2 2/4 divide by 1 1/4

**Math**

PLEASE HELP Can someone please teach me how to do these? 1. You roll a number cube numbered one to six 12 times. P(5)=2/3. What type of probability is illustrated and why? A. experimental; the results is based on the numbered of possible outcome. B. experimental;the results ...

**Math**

a gas tank that is 1/3 full requires 6 gallons to make it 5/6 full.what is the capacity of the tank in gallons.

**math**

what is he surface area of a rectangle prism with a 12 mm length 5 mm high 4mm wide? I need this ? answered badly

**Math**

Select the factors that can be divided out to simplify the multiplication problem: 8/15 * 5/16 select all that apply 2 3 4 5 6 8 I think its 2, 3, 5, and 8

**Math**

If a seed is planted, it has a 70% chance of growing into a healthy plant. If 7 seeds are planted, what is the probability that exactly 1 doesn't grow? Here What I did I thought its premutation but some reason I got that wrong, I multiple by (0.10) and (0.70) of the seeds I ...

**math**

is the are of a paperback book over closer to 28 square inches or 28 square centimeters? tell how you decided

**Algebra**

A survey was taken of students in math classes to find out how many hours per day students spend on social media. The survey results for the first-, second-, and third-period classes are as follows: First period: 2, 4, 3, 1, 0, 2, 1, 3, 1, 4, 9, 2, 4, 3, 0 Second period: 3, 2...

**MATH HELP ASAP PLEASE!!!!!**

Please, please, please, help me! Directions: A large pizza at Tony's Pizzeria is a circle with a 14-inch diameter. Its box is a rectangular prism that is 1 14 8 inches long, 1 14 8 inches wide, and 3 1 4 inches tall. Your job is to design a crazy new shape for a large pizza. ...

**Math**

Ramesh gave 1/2 his money to his wife and 1/3 to his son and remaining rupees 50000 to his daughter. Find out his total money?

**math,**

. Mr. David, an individual investor, has $70,000to divide among several investments. The alternative investments are municipal bonds with an 8.5% annual return, certificates of deposit with a 5% return, treasury bills with a 6.5% return, and a growth stock fund with a 13% ...

**Math**

I have that 29/35 is painted and 6/35 is left to paint. I also know that 3 5/12qts were used to paint the 29/35. But I do not know how to do the work on how much paint will be needed to finish the 6/35 that is left to paint

**Math (Integrals)**

∫ (2x-1)^2 dx could have two answers: a) ((2x-1)^3)/6 + C b) 4/3x^3 - 2x^2 + x + C Now the question is, how are the two answers related? I attempted to answer the question by: "The two answers are related because when finding the derivative of those two different answers, ...

**math**

the sum of two number is 74. using L to represent the larger number translate the quotient of the larger number and the smaller number into a variable expression

**math**

What are the first three terms of an arithmetic series in which a1 =9,an=105, and Sn=741?

**math**

Find the four terms between 15 and 87 in the arithmetic sequence

**math**

Write an equation for the nth term of the arithmetic sequence -13,-8,-3,2........

**Business Math**

A firm of attorneys deposit $5000 of profit sharing money at the end of each semi-annual period for 7.5 years. Find the final amount in the account in the account if the deposits earn 10% compounded semiannually. Find the amount of interest earned.

**math NEED ASAP**

the difference between combination and permutation

**Math**

A florist sold bouquet of red roses to 15 of the first 20 customers who came into his shop. 1. What is the experimental probability that a random customer in that group bought a bouquet of red roses? 2. Based on the experimental probability, how many bouquets of red roses ...

**Math**

A florist sold bouquet of red roses to 15 of the first 20 customers who came into his shop. 1. What is the experimental probability that a random customer in that group bought a bouquet of red roses? 2. Based on the experimental probability, how many bouquets of red roses ...

**Math**

Ten students achieve the following test scores on an exam: 78, 69, 45, 89, 74, 37, 99, 77, 100, 82. What is the interquartile range of these scores?

**Math**

Omar has 2 3/4 cup of dough to make dumplings.if he uses 3/16 cup of Dough for each dumpling how many whole dumplings can Omar make?

**Math\**

Victor is y years old .His 9-year-old sister Marsha is 4 years younger than he is Write an equation to represent this situation would this be like 9+4=Y

**math**

choose an appropriate mertic unit for the mass of a paper clip A.meter b.gram c.kiogram. or d.centimeter hel please!!!!!!

**Math**

Joe takes his wife and four children to the movies. their tickets cost $56. the adult tickets cost twice as much as the children's tickets. how much is one adult ticket?

**Math**

1/4 of a dozen eggs equal what

**math**

round to the nearest hundredths 1.5.

**math**

what is the rate of change of the function y=3

**Math**

Ronald reads 1,000 words in 5 minutes.Write untie rate would it be like 5/1000=200

**Math**

Two business partners, Ellen and Bob, invested money in their business at a ratio of 6 to 7. Bob invested the greater amount. The total amount invested was $260. How much did each partner invest?

**Math**

Mr.Edgington travels 25 mph in his boat. To determine how far he travels he uses the equation d=25h, where is d in the total distance in miles and h is the number of hours he travels on his boat. Find the independent and dependent variable and the equation.

**Math**

The scores on the GRE are normally distributed with a mean of 541 and a standard deviation of 89. Use the 68-95-99.7 rule to find the percentage of people taking the test who score between 363 and 541

**Math**

Wes has 20 feet of garden fencing. If he wants the smallest side of his garden to be 3 feet or longer, what possible rectangles can he make?

**Consumer Math**

11. Your realized income is $3,167.89/Month, and your fixed expenses are $954.32/every 2 weeks. If you save 50% of your discretionary monies each month, how much are you saving? 12. You have a credit card with a balance of $2,856.74 at a 14.75% APR. instead of saving the ...

**Math**

Prove that if A∩B = A∪B then A=B. Having troubles figuring this one out.

**math**

How do I find vertex, focus and directrix for the following functions? y^2−16y=12x−8^2 x^2+16x=4y−24 (x−2)^2=12(y−2)

**Math**

The ratio of blue to red cars in a parking lot is 4/7. If there are 168 blue cars about how many red cars are there? 4/7=x/168 672=7x x=96

**Math**

Jon's test grades are 76,84,83 and 78.What does he need to make on his next test to have an 83 average?

**math**

four positive number are in a.p. If 5,6,9 and 15 are added respectively to these no.,we get a g.p. ,then common ratio of g.p. And commo difference of a.p. Is

**Math**

What is the volume of the right prism with height h=14 cm, if the base of the prism is a triangle ∆ABC with side AB = 9 cm and altitude to that side h= 6 cm.

**Math**

Regular quadrilateral prism has an altitude h = 11 cm and base edges b=8 cm. Find the sum of all edges.

**Math**

Lisa has 12 more stickers than John, and together they have 60 stickers. What is the ratio of the number of Lisa’s stickers to the number of John’s stickers?

**Math**

If an alloy requires copper, nickel, and zinc in a ratio of 12:5:3, how many kilograms of each metal are needed to make 5 kg of the alloy?

**math**

The sum of two numbers is equal to 495. The last digit of one of them is zero. If you cross the zero off the first number you will get the second. What are the numbers?

**Math**

find the slope of a line that is perpendicular to the line containing the points (–2 –1) and (2 –3). (1 point)

**math**

a bus driver filled up 7/8 of her fuel tank for a trip. she used 6/7 of the fuel by the end of the trip. the capacity of her tank is 70 gallons. how much fuel did she sue for the trip. express answer a decimal

**8th grade math asp help**

Sara needs to cover the top and sides of the cylinder below. (1 point) h=12 r=8 v=? About how many square inches for paper will Sara need? A.352 in2 B.402 in2 C.804 in2 D. 1,005 in2

**math**

Bernie has $16000 invested, part at 3% and the remainder at 5%. If the yearly interest on each investment is the same, how much interest does he receive each year?

**math**

what can * by -168 and adds to get 21.

**math**

a rectangular window had a height of 5 1/2 feet and a width of 1 1/2 feet. what is the perimeter of the window?

**math**

A worker was paid $218 for each day he worked and was fined $36 each day he was absent. at the end of 30 days he earned $5524. how many days he was absent?

**Help Please. Math**

By comparing the amount of carbon-14 to amount of carbon-12, one can determine approx how long ago the organism died. The half-life of carbon-14 is 5730 years. Assume the initial quantity of carbon-14 is 600 milligrams. the equation is A (t)=600*(.5)^(t) (0,600) (1,300) (2,150...

**@Ms.Sue please help!!:(Math**

Sound intensity is inversely proportional to the square of the distance from the sound source; that is I= k/ (r)^(2), where I is the intensity, r is the distance from the sound source, and k is a constant. Suppose that you are sitting a distance R from the TV, where its sound ...

**math**

Find coordinates for two points that belong to the plane 2x+3y+5z=15. Show that the vector [2,3,5] is perpendicular to the segment that joins your two points. Explain why [2,3,5] is perpendicular to the plane.

**math**

A depositor opens a new savings account with $ 8000 at 8 % compounded semiannually. At the beginning of year 3, an additional $6000 is deposited. At the end of four years, what is the balance in the account?

**Math**

My son and I have this question. This is for second. i have 3 ones. the digit in my hundreds place is the same as the digit in my tens place. i am between 550 and 650.

**Math**

When you are translating a number from scientific notation to standard form, what does the exponent tell you? The number of zeros to add to the end of the original number the number of places to move the decimal point to the left the number of places to move the decimal point ...

**maths (probability)**

1) A basket contains 3 red and 2 yellow apples. Two apples are chosen at random. Find the following probabilities: a) P(one red, one yellow) b) P(at least one red) 2) A card is drawn from a standard deck. Find the following probabilities: a) P(a jack or a king) b) P(a jack or ...

**math**

what is the next number in the sequence 4 9 25 49

**Math**

Abigail is putting tiles on a tabletop she needs 48 tiles for each of eight rolls each row will have a six white tiles the rest of tiles will be purple how many purple tiles but if you need

**math**

1. Write as a single power: 420 + 420 + 420 + 420

**math**

90 decreased by what percentage is 45.9?

**math**

How many seconds are there in 13.5% of 3 hours?

**math**

12. You has investments totaling $8000 in two accounts: a savings account paying 5% interest, and the other a bond paying 8% interest. If the amount of interest after one year from both investments was $600, how much did you invest in both accounts initially?

**math**

A $10, 000 loan advanced on May 1 at 8 1⁄4 % requires two payments of $3000 on July 15 and September 15, and a third payment on November 15. What must the third and final payment be in order to settle the debt?