# Math

## Recent Questions

**Math**

I have got 18 red , 12 green, 5 blue and 5 yellow balls in the bag. What is the probability that I pick excatly 2 green when I pick 4 at random ? What is the probabily that none are yellow after I pick 4 at random ? Thanks.

**Math probability**

I have got 18 red , 12 green, 5 blue and 5 yellow balls in the bag. What is the probability that I pick excatly 2 green when I pick 4 at random ? What is the probabily that none are yellow after I pick 4 at random ? Thanks.

**math**

At the beginning of the year business had total assets of 50,000 and total liabilities of 15,000. if total liabilities decreased by 10,000 during the year how much the amount of total assets in the end of the year?

**math**

June earns $13650 dollars in a year. She has to pay 12.5% tax on this amount. How much tax does she pay?

**math**

Solve: [(1+(1/x)]^(x+1)=2.717602229679

**Math**

In how many ways a set can be written? Two or three. I am confused please tell me correct.

**math**

if c is jointly varies as s and iversely varies as the forthroot of m where c=number and m=256 where s=55(1)find the formula connecting the variable?

**Math**

Draw a circle with 5cm radius. Inscribe a triangle with side ratio 5:6:7 in it.

**Math**

Two trains leave the station at the same time, one heading east and the other west. The eastbound train travels at 85 miles per hour. The westbound train travels at 95 miles per hour. How long will it take for the two trains to be 252 miles apart?

**math**

i have 20kg of wood.i brun 65% of it and keep the rest,how much do i use for bruning.

**math-precalculus**

Eliminate the parameter t to find a Cartesian equation in the form x=f(y) x(t)=4t^2 y(t)=4+2t

**math**

Perform the indicated operation and simplify the result if possible. 2 ft. 11 in. + 7 ft. 3 in. A. 9, 2 B. 10, 4 C. 9, 3 D. 10, 2 ? not sure

**math**

The ratio of a quarterback’s completed passes to attempted passes is 7 to 9. If he attempted 45 passes, find how many passes he completed. Round to the nearest whole number if necessary. A. 9 passes B. 58 passes C. 5 passes D. 35 passes D?

**Math**

An apple cost x cents and an orange costs y cents more than an apple .Express the cost of 8 apples and 12 oranges in term of X and Y.

**Math**

Lamp posts long one side of a street are 6 m apart. If they extend for 1 and a half kilo metres .Find the number of lamppost along the Street.

**Math**

23×21a×21a

**Math**

Simplify 5h-3[4k-6m+2{3h-(2h+3k)}]

**math**

Anita's, a fast-food chain specializing in hot dogs and garlic fries, keeps track of the proportion of its customers who decide to eat in the restaurant (as opposed to ordering the food "to go"), so it can make decisions regarding the possible construction of in-store play ...

**Math**

Solve using 2) 3x-5y=15andx-2y=8

**Math**

Solve using eliminating method2) 3x-5y=15 x-2y=8

**math-ed 16**

The sum of the age of andy and his parents is 72.In how many years time will the sum of their age be 90?

**math 5**

Iam a seven digit number.My millions place is 5.My ten thousands place is the difference between my millions place and hundreds place.And my remaining place value is 0.What number am I.

**Math**

Find The Lateral Surface Area And Total Surface Area Of A Right Circular Cylinder In Which: r = 4ft, h = 12ft

**math**

1.What is the 10th term of 1/2, 1, 3/2, 5/2 2. What is the 15th term of 0.3, 0.9, 0.15 3. What is the 80th term of 8, 13, 21, 29

**math**

a one meter square sheet of cardboard is cut into the maximum number of squares of side one millimeter. If these squares would be laid side by side, how far would they stretch?

**Math**

Simpilfy the radical expression by rationalzing the denoiminator? 3/sqrt15 a)sqrt45/15 b)sqrt15/5 c)5sqrt15*** d)sqrt3

**Math**

How many times greater is the value of the digit 5 in 583,608 than the value of the digit 5 in 362,501

**Math**

What are the solutions of the system? y=x^2+3x-4 y=2x+2 a) (-3,6) and (2,-4)** b) (-3,-4) and (2,6) c) (-3,-4) and (-2,-2) d) no solutions

**Math**

How many real-number solutions does the equation have? -7x^2+6x+3=0 a) 1 b) 2*** c) none d) infintely

**math**

About hyperbole

**math**

A spinner is divided into 10 equal sections numbered from 1 to 10. You spin the spinner once. What is P(4)

**Math**

In a school, 4/9 of the students are boys and the number of girls is 775. Find the number of boys in the school.

**math**

solve the following equation: k/2 - k/5 - k/6 =2

**math**

Mr Ahmad starts work at 11.40 on Tuesday.He works for 12h45min.When does Mr Ahmad finish his work?Express your answer usering the 24-hour clock Math

**math**

a number is 300 when rounded of to the nearest hundred. what is the greatest possible value of the number?

**Math**

using a certain garden hose, liza can fill her fancy new bucket with water in 45 seconds. Unfortunately, Henry accidently makes a hole in the bucket, so if initially full, the bucket will now become empty in 1 minute. How long will it take to fill the bucket, considering it ...

**Math**

If sin (theta+24)=costheta where theta is acute angle .find theta

**math**

Events A and B are dependent events. The probability that event A occurs is 20%. The probability that events A and B both occur is 8%. What is the probability that event B occurs given that event A occurs? Explain how you found your answer.

**math**

Solve the linear programming problem by the method of corners. Find the minimum and maximum of P = 3x + 2y subject to 3x + 5y ≥ 20 3x + y ≤ 16 −2x + y ≤ 2 x ≥ 0, y ≥ 0 The minimum is P = at (x, y) =

**math**

A company manufactures x units of Product A and y units of Product B, on two machines, I and II. It has been determined that the company will realize a profit of $2/unit of Product A and a profit of $7/unit of Product B. To manufacture a unit of Product A requires 6 min on ...

**math**

A financier plans to invest up to $500,000 in two projects. Project A yields a return of 8% on the investment of x dollars, whereas Project B yields a return of 13% on the investment of y dollars. Because the investment in Project B is riskier than the investment in Project A...

**math**

The inside of a trough is shaped like a rectangular solid, 25 feet long, 6 inches wide, and filled with water to a depth of 35 inches. If we wish to raise the depth of the water to 38 inches, how much water must be let into the tank? a. 25/96 cubic foot b. 25/8 cubic feet c. ...

**math-probability**

Bob buys three tickets in a raffle in which 500 tickets are sold. What is the probability of him winning" a) 1st prize b) 1st and 3rd prize c) 2nd and 3rd prize Helping me with either a, b, or c should help me answer the other questions, thanks.

**math**

Events A and B are dependent events. The probability that event A occurs is 20%. The probability that events A and B both occur is 8%. What is the probability that event B occurs given that event A occurs? Explain how you found your answer.

**math-probability**

In a 16 horse race, what is the probability of choosing the winning trifecta? (Disregard odds on horses)

**Math**

The coordinates A(0, 0), B(0, 3), C(4, 3) and D(4, 0) are graphed and connected together. What 3-dimensional shape will be created when this shape is rotated about the y-axis? Provide an explanation and proof for your answer to receive full credit. My answer A line segment is ...

**math-probability**

Is there a fast way to list all the possible permutations for the letters A B C D? This also includes AAAA, BBBB, CCCC, DDDD, ABBB, ACCC, ADDD, etc

**Math**

The National Park Service is building a 16-mile hiking trail.They will post a sign every 1/8 mile along the trail, including one at the end.There will not be a post at the beginning of the trail.How many signs will they post along the trail?...

**Math**

A bag contains 6 red marbles, 3 white marbles, and 7 blue marbles. You pick a marble without looking. Find the probability of drawing a white marble. A. 3/7 B. 7/16 C. 3/16 D. 13/16 Please help please and thank you

**math**

Events A and B are dependent events. The probability that event A occurs is 20%. The probability that events A and B both occur is 8%. What is the probability that event B occurs given that event A occurs? Explain how you found your answer.

**Math**

The population, in millions, of a city t years after 2000 is given by the function P(t) = 2.9 - 0.008t. Which statement is true? A. The population is increasing by 8,000 people per year. B. The population is decreasing by 8,000 people per year. C. They were 8,000 people living...

**Math**

If f(x) = -3x + 8, find f(5)

**Math**

Jake is walking up hill in the sand. Every step Jake takes he climbs 2 feet up, but slides down 6 inches. How far has Jake traveled if he has taken 8 steps?

**Math**

Given the function f(x) = 3x +4 Determine the value of f(x) for the point (-1, f(x))

**math**

If a digit can be used more than once, what is the probability that the last two digits of a randomly generated 5-digit number are both 4? A. 1/100 B. 1/90 c. 1/81 D. 1/10

**math**

A group of 5 students is to be chosen from a class of 20 students to work on a term project. How many different groups of students can be chosen from the class?

**Math**

A carpenter is dividing a board that is 3/4 yd long into 9 equal pieces . What is the length of each piece in yards?

**Math**

The graph shows the progress of a car which traveled 300 km in 5 hrs. Assuming that its speed remained constant, how far had the car gone after 2 hrs?

**math**

If 16 men can construct 800 tables in 9 days how long will it take 15 men to construct 1000 tables if they work at the same rate

**math**

Solve the linear programming problem by the method of corners. Find the minimum and maximum of P = 3x + 2y subject to 3x + 5y ≥ 20 3x + y ≤ 16 −2x + y ≤ 2 x ≥ 0, y ≥ 0 The minimum is P = at (x, y) =

**math**

A financier plans to invest up to $500,000 in two projects. Project A yields a return of 8% on the investment of x dollars, whereas Project B yields a return of 13% on the investment of y dollars. Because the investment in Project B is riskier than the investment in Project A...

**math**

A company manufactures x units of Product A and y units of Product B, on two machines, I and II. It has been determined that the company will realize a profit of $2/unit of Product A and a profit of $7/unit of Product B. To manufacture a unit of Product A requires 6 min on ...

**math**

If 8a−4b=20 and 4a−8b=4, then what is the value of a−b? i got 2

**math**

write an equation in standard form for the ellipse with foci (7,0) and (-7,0) and y intercepts 6 and -6

**Math: Probability**

Hi, could you please help me? I have been stick on this question for a week and I have tried getting help from my teacher and parents, but I still cant get it. TIA A standard deck of 52 cards consists of 4 suits (hearts, clubs, diamonds, and spades). If a student deals 3 cards...

**math**

Sarah taking a 4 week holiday, Sarah received a payment of $2444. Which represented her holiday loading (17.5%) plus her usual pay over the 4 weeks. Calculate her yearly salary (excluding the 17.5% holiday loading)(1year=52 weeks)

**math**

How many real number solutions does the equation have? y=-5x^2+8x-7

**physics , math**

The hydrostatic equation holds not just for air, but for other fluids such as water (air, though it is a gas, is often referred to as a 'fluid') as well. In the case of water the equation becomes even easier, as water (as opposed to air) can be treated as incompressible, ...

**Math**

List three different ways to write 5^11 as the product of two powers. Explain why all three of your expressions are equal to 5^11 Need some help Please!!

**math**

Let f(x) = x^2+7 and g(x) = x+ 3 / x. Find (g (circle) f) (-5) a.) 35/12 b.) 35/32 c.) 32/35 d.) 11/25 I think it is a.

**math**

Can you please help me simplify this into one fraction? 3/(x-3) - 5/(x/2) Here are the options: A) -2x+9/(x-3)(x-2) B) -2x/(x-3)(x-2) C) -2x-9/(x-3)(x-2) D) 2x+9/(x-3)(x-2) I think it's option D but I'm not so sure :(

**Math**

Six whole numbers have A median of 10 A mode of 11 A range of 4 Work out a possible set of a six numbers. Write the numbers in order. Thank you.

**math**

What is the value of x^2+y^2? if x+y=10 and x−y=8 i got 52(x=6, y=4) but its wrong

**math**

If m/n =5, then m^2−25n^2 = i got 0

**math**

A bus travels 70km/h for xhours and then at 80km/h for (0.5x+3) hours. If the total distance traveled is 460km, find x to the nearest minute.

**Math**

After deducting10% from sum and then 20% from the remainder₹3600 are left.Find original amount.Solution

**Math**

im having a hard time with polynomials it just shows shapes and i dont understand, if somebody could help that would be great :) Which polynomial does the model represent? The picture shows a big black square, 2 white rectangles 1 black rectangle 1 little white square and 3 ...

**Math**

At noon temperature was38degree Celsius.temperature decreases at rate of 6 degree Celsius per hour. What will be the temperature of room after....... Hours

**math**

Round the following percentage to two decimal places. 0.068%

**Math**

Two events are __?__ events if they are disjoint events and one event or the other must occur.

**Math**

In Exercises 16–18, use the following information. At a college, 43% of the students are women, 15% of the students are art majors, 4% have not chosen a major, and 8% are women and art majors. A faculty member conducts an experiment and selects students at random to ...

**Math help asap**

PQRS is a rectangle. One side is on the X axis, vertex s is located at (5.4) state two possibilities for coordinates for the other vertices.

**math**

If a+b=6, b+c=−3, and a+c=5, what is the value of a+b+c? i am not sure how to solve this but would you do this to solve it: A+B+B+C+A+A+C=6+-3+5

**Math**

In Exercises 16–18, use the following information. At a college, 43% of the students are women, 15% of the students are art majors, 4% have not chosen a major, and 8% are women and art majors. A faculty member conducts an experiment and selects students at random to ...

**math**

(a−b)/2 =3 and xa − xb = 12, then x = (A) −1 (B) 1 (C) 2 (D) 4 (E) It cannot be determined from the information given. i got c

**math**

a/b =6, b/x =36, and a=36, what is the value of 1/x ? (A) 1/2 (B) 2 (C) 3/2 (D) 4 (E) 6 i got e

**math**

If (a+b)^2=100 and (aâˆ’b)^2=64 What is the value of a^2+b^2? (A) 66 (B) 18 (C) 82 (D) 164 (E) 36 i got c

**math**

If x−y=a and x+y=b, then x^2−y^2 is: (A) a^2·b^2 (B) a^2+b^2 (C) a^2−b^2 (D) ab (E) b−a i got c is this right?

**Math**

Vocab __?__ events, or __?__ __?__ events are events that have no outcomes in common. __?__ events are events that have one or more outcomes in common. For two __?__ events, the probability that either of the events occurs is the sum of the probabilities of the events. For ...

**Math**

In Exercises 16–18, use the following information. At a college, 43% of the students are women, 15% of the students are art majors, 4% have not chosen a major, and 8% are women and art majors. A faculty member conducts an experiment and selects students at random to ...

**Math**

On a map, 1 inch represents 120 miles. How much does 3/4 inch represent?

**Math**

Differentiate y=3secxtanx

**math**

what is the square root of 25?

**Math**

Find the positive square roots by factors method of 10816

**Math**

david is comparing two different phone plans. Chatty box has a flat rate of 2 cents per minute. celltalk charger 15 cents per call plus 1 cent per min at what minute will both companies charge the same amount of money?

**math-limit**

Lim x>0 (sqr5+x-sqr5)/x

**Math**

A van leaves town x at 6:45am and travels towards town y ,400km away at an average speed of 80km/hr.At 8:00am a truck left y for x at an average speed of 60 km/hr.at what time will the two meet.

**MATH PLEASE HELP**

Anna mixes the letters S, E, L, E, C, T, E and D thoroughly, without looking, Mary draws one letter. Expressed as a fraction, decimal, and percentage, what is the probability that E will not be the letter mary selects A 3/8 0.375 37.5% B 8/5 1.6 16% C 5/8 0.625 62.5% D 8/3 2....

**math**

(x-4)^(3/2)

**math**

a town's population went from 25,8000 to 42,600 in 15 years. What is percent of change?