# Math

## Recent Questions

**math**

A water through is to be constructed so that its cross-section is trapezium PQRS in which PQ=RS=6cm, QR=14cm and <SPQ=<PSR=x. (a).Show that the area of trapezium is given as 84sinx+18sin2x (b).Determine its perimeter in terms of cosx

**math**

In a past presidential election, it was estimated that the probability that the Republican candidate would be elected was 1/3, and therefore the probability that the Democratic candidate would be elected was 2/3 (the two Independent candidates were given no chance of being ...

**math**

A student studying for a vocabulary test knows the meanings of 12 words from a list of 26 words. If the test contains 10 words from the study list, what is the probability that at least 8 of the words on the test are words that the student knows? (Round your answer to three ...

**English**

1. He would have opened the door. 2. He would have solved the math problem. 3. He would have met the person. 4. He might have opened the door. ---------------------------------------- From #1 to #3, actually he didn't do that. Right? Does #1 mean #4 sometimes? Is #1 ...

**math**

find six rational number b/w3/8and-1/2

**math/statistics**

Evaluate the quantity. 3 · P(6, 4) · C(8, 5)

**math/statistics**

From a shipment of 65 transistors, 4 of which are defective, a sample of 6 transistors is selected at random. (a) In how many different ways can the sample be selected? ways (b) How many samples contain exactly 3 defective transistors? 166320 samples (c) How many samples do ...

**math/statistics**

In a past presidential election, it was estimated that the probability that the Republican candidate would be elected was 1/3, and therefore the probability that the Democratic candidate would be elected was 2/3 (the two Independent candidates were given no chance of being ...

**math/statistics**

In a manufacturing plant, three machines, A, B, and C, produce 37%, 36%, and 27%, respectively, of the total production. The company's quality-control department has determined that 1.5% of the items produced by Machine A, 2% of the items produced by Machine B, and 2.5% of the...

**Math**

The probability of winning a large stuffed animal in the ring-toss game at a fair is 10%. Find the probability of winning at least 5 of 50 games using normal approximation. I got 0.4052 but answers says it's 0.5932. Please help!

**math**

Solve the following set of equations. Can I use y = mx + b to calculate the equation 4x−y = 6 2x + 3y = 5

**math**

how many rational numbers are b/w -1and0

**math**

In the sequence 2,6,10....what term has a value of 106?

**Math**

Together Elise and Chris spelled 27 words correctly. Chris spelled 5 more words correctly than Elise. How many words did each student spell correctly?

**math**

If lines AB=6cm, AC=10cm, BC=2•4cm, CD=4cm and AD=X cm. Also angle ABC = angle ACD. (a).Prove that triangle ABC is similar to triangle ACD. (b).Determine the area of the quadrilateral ABCD if the area of triangle ACD is 60cm^2

**Math**

Amy's school is made up of 524 students. The principal gave each student 3 pencils. Amy says 1,048 pencils were handed out. Is Amy's answer reasonable? Why or why not?

**Math**

If alpha, beta are the zeroes of x2-2x+3, find a quadratic equation whose roots are (alpha-1)(beta+1), (beta-1)(beta+1)

**Math**

Below shows a right pyramid on a rectangular base whose length is twice the width the area of the base is 32cm the slant height of each rectangular faces is 11cm calculate to the nearest whole number,height of the pyramid, surface area, volume of the pyramid

**math**

Which point on the circle (x-6)^2+(y-2)^2=90 is closest to the origin? Which point is farthest from the origin? Explain.

**math**

Box A weighs 50 kgs; Box B weighs 20 kgs; Two of them together would weigh -

**math**

1. A construction worker tosses a hammer straight up to a co-worker who is working on a platform above him. The hammer leaves his hand at 7.26 m/sec, and travels 3.33 meters upward, at which point it is caught by the worker on the platform. (It is caught while still moving ...

**math**

A large picture,2m by 2m,is displayed on a wall.It is place in a frame with a border of uniform width. A. How would you represent the length of side of the frame? B. What expression represent the area of the frame?

**math**

Dennis says that (2x-7)^2=(7-2x)^2.Do you agree with Dennis?Explain Answer please steve

**math**

The dimension of a rectangular garden are represented by (x+7) and (x-7) A. What is the area of the garden? B. It is possible that x=7?how about x=-7?explaine why or why not. C. What could be the value of x? Please answer steve

**math**

Manny receives 6 dollars each week for allowance. He also had 45 dollars saved from birthday gifts. If he currently has 111 dollars, write an equation to represent how many weeks Manny has been saving money.

**Math**

A party mix is made by adding nuts that sell for â€‹$2.50per kg to a cereal mixture that sells for â€‹$11 per kg. How much of each should be added to obtain 30 kg of a mix that will sell for â€‹$2.10perâ€‹ kg?

**math**

find the difference of an elevation of 30 feet below sea level and an elevation of 118 feet above sea level ans.. -30 - 118 = -148

**math**

write in numeral "nine croe seventy lac fifty thousand three hundred and fifty eight"

**Math**

I spend 3/4hour doing homework and play 2/3hour hoe much time I speak on doing home work and play

**math**

Thw dimension of a rectangular garden are represented by (x+7) (x-7) A. What is the area of the garden? B. It is possible that x=7?his about x=-7?explain why or why not? C. What could be the value of x?

**math**

A large picture 2m by 2m is displayed on a wall it is place in a frame with a border of uniform width A. How would you represent the length of the side of the frame? B. What expression represent the area of the frame? Answer please

**math**

Dennise says that (2x+7)^2=(7-2x)^2.Did you agree with dennised?explain.

**math**

The dimension of a rectangular garden are represented by (x+7) (x-7) A. What is the area of the garden? B. It is possible that x=?how about x=-7?explain why or why not? C. What could be the value of x? I need answer to my homework now na please

**Math**

What is the value of a stock that grows at a supernormal rate of 18% for the first four years, and then slows down to a constant growth rate of 10%? An annual dividend of $2.00/share was just paid, and the rate of return on common stock is 13%. Possible Solution: For a ...

**math**

A third staircase in a swimming pool has a landing of 18 inches and a vertical rise of 12 inches per step. To the nearest degree, calculate the following measures. a) What is the angle of elevation rounded to the nearest whole degree? b) If the elevation of each step were ...

**math**

Peter uses the equation mc015-1.jpg to model the number of miles that he has walked in x hours. Which statement is true about the proportional relationship that is modeled by Peter’s equation?

**math**

James has 1800sh to buy pencils. There two types of pencils, cheap and expensive The prices differ for 40 sh. If he buys cheap pencils he gets 12 more. What is price of the pencils.

**Math**

Jenny and Dan want to save for an RV.They estimate that they will need $15,000 in 8 years. They can get 3% interest compounded semiannually. How much would they need to deposit now in order to have $15,000 in 8 years ? Put answer to the nearest cent.

**Math**

Find the roots using quadratic formula 1. X^2+7x =4 2. 4x^2 - 4x +1=0

**math**

In a triangle ABC, E and F are the feets of the perpendiculars from B and C to AC and AB respectively. DE and CF meet at H. Let(HA) ⃗=x, (HB) ⃗=y, and (HC) ⃗=z. I. Find(AB) ⃗, (AC) ⃗ and (BC) ⃗ in terms of x, y and z. ii. Using the fact that BE is perpendicular to ...

**math**

Two cards are drawn in succession without replacement from a standard deck of 52 cards. What is the probability that the first card is a spade given that the second card is a diamond? (Round your answer to three decimal places.)

**math**

Urn A contains four white balls and seven black balls. Urn B contains six white balls and three black balls. A ball is drawn from Urn A and then transferred to Urn B. A ball is then drawn from Urn B. What is the probability that the transferred ball was white given that the ...

**math**

In a survey to determine the opinions of Americans on health insurers, 400 baby boomers and 600 pre-boomers were asked this question: Do you believe that insurers are very responsible for high health costs? Of the baby boomers, 232 answered in the affirmative, whereas 192 of ...

**math**

zeros are real number? true or false

**math**

the seat of real number is the union of the set of irrational number true or false?

**Math**

Find geometric mea between radical 2 and radical 8.

**math**

leo has x plums ,melissa has 8 more plums that leo how many plums do melissa

**Math**

A rectangular prism is being designed to have a volume of 36 cubic units. Find the minimum surface area in square units for the prism if the edge lengths are positive integers.

**math**

Cand D are two observation posts on the same horizontal ground at the foot A of a vertical tower AB.the tower is 18m due north of D and 24m east of C.the angle of elevation of B from D is 35¡ã.calculate to three s.f the height AB,distance CD,angle of elevation from C,bearing...

**math**

dependent or independent taking a quarter out of a bag and then taking another quarter out of the bag without replacing the first quarter

**Math**

If a1, a2 ,a3 ........an are in Ap such that a5 +a7=16,then find a6.

**Math**

If y=1+X+X^2+X^3........|x|<1 then x=.....? Please solve this problem.

**Math**

Arrange rational numbers in ascending order - 2/4,2/3,8/21

**math**

Anton use a square cardbaord to make an open box.He cut small squares of the same dimension from the corners of the card board then bent the side upward.The length of the sides of the cardboard is 28 cm. A. What expression represents the length of sides of the box? B. How ...

**Math**

Write the equation of a parabola, in standard form, that goes through these points: (0, 3) (1, 4) (-1, -6) ax^2 + bx + c = y a * 0^2+b*0+c = 3 a*1^2+b+1+c = 4 a*(-1)^2+b(-1)+c = -6 c = 3 a + b + c = 4 a – b + c = -6 a + b + 3 = 4 a – b + 3 = -6 Graph the parabola above. ...

**Math**

Select all that are true With which information can you construct more than one triangle? The measurements of two angles The measurements of two angles and the length of the included side The measurement of all angles The lengths of two sides and the measurement of the ...

**math**

23 tens and 8 ones in standard form

**math**

What is the theoretical probability of getting tails if you flip a coin 40 times? a)If you did this experimental would you result be the same? Why? b) Is is possible to flip a coin 40 times and get tails each time? Explain.

**Math Question**

A bread recipe calls for 1/3 cup of butter. You want to make 1/2 of a batch. How much butter do you need? A 1/6 B)2/3 C)1/3 d) 1 1/2 Please help Its urgent!! Thanks!

**math**

Evaluate: 2:2.5

**math**

Joelle practiced piano for 45, 42, 55, and 48 minutes in the first four practice days this week. How many minutes does she need to practice on the fifth practice day to have an average of 50 minutes?

**Math**

1. Given the following polynomial: 2x^2 + 7x - 15 = 0 Check all that apply. The value of the discriminant is 169. There are 2 real roots. There are 2 irrational roots. The graph intersects the y-axis twice. The parabola is directed upward. The axis of ...

**math**

The probability that John wins a game is 4/5, and, independently, the probability that Meghan wins is 9/11. What is the probability that Meghan wins and John loses the game?

**Math**

Find the ratio of the first number to the second number and simplify?

**math**

a block prism has a volume of 36 cubic units, what is the least and greatest surface area it could have

**math**

Elmer has a collection of 300 fossils. Of these, 21%, percent are fossilized snail shells.

**Math**

The third term of an arithmetic sequence is -12 and the seventh term is 8.what is the sum of the first 10 terms?

**Math**

How do we find the sum of n terms of the following? Tr= 5^r/[(r+1)(r+2)] I can see there's an arithmetic progression and a geometric progression? How do we combine them both to find n terms.

**math**

Find The area of a Circular path if its radius R is 3.5

**Math**

Last Week June 16,2017 Ghana's Midweek Lottery Results were as follows Win: 05-25-71-56-19 Machine: 42-57-45-36-68 Please help me predict the next winning numbers for today June 21,2017

**math**

The product of one more than a number and 4 less than the number is 36. Find the number

**Math**

1. Make a sketch of 5 rectangular open boxes such that a. the height of the boxes are the same, b. The boxes can hold 249cm^3, 504 cm^3,810 cm^3 and 468 cm^3 respectively. 2. Solve each quadratic equation by completing the square to determine the dimensions of the materials to...

**math**

my thousand digit is an even number which is two more than my hundreds digit. my hundreds digit is three more than my tens digit which is three more than zero, my ones digit. my ten thousand digit is one more than my ones digit.

**math**

Q1. Determine the value of k for which the given system of equations has unique solution: a) 2x – 3y = 1 ; k x + 5y = 7 b) 4x – 5y = k ; 2x – 3 y = 12

**math**

mr.rich bought a car for 6000000.the yearly depreciation for his car is 10% of its original value at the start of the year.what is its value after 4 years?

**math**

my hundreds digit is the last odd number. five less than my hundreds digit is my ones and my tens digit is two more than my ones digit. my thousand digit is three less than hundreds digit.

**math**

My hundred digits means nothing. six more than my hundreds digit is my thousands and one less than my thousands is my ten thousands. my tens digit is four more than my hundreds and my ones digit is five more than my tens digit. what number am i ?

**math**

think of a five digit number composed of odd numbers. the thousands digits is two less than the ten thousands digit but two more than the hundreds digit. the tens digits is two more that ones digit which is less than the hundreds digit.

**Math**

Marta is thinking of a number. The prime factorization of the number is the first eight primes, each used as a factor exactly one. Write the prime factorization and the number.

**Math**

Freddy and his friends write their names in code. Each friend's name is represented by a number. To identify the friend in a message, you must find the prime factorization of the number. Freddy gets a message from 45. Who is the message from. Secret Code: Freddy= 2x3x5 Judy= ...

**math**

suppose f(x)=x+4/x^2-4x-5 and g(x)= rad 3-x. algebraically determine the domain of f(x)/g(x)

**math**

if h(x)=5-1/(srt)x+1, find possible functions f and g so that h(x)=(fog)(x). Do not use f(x)=x or g(x)=x

**math**

how much mass is converted to energy per day ina nuclear power plant operated at a level of 100 megawatts?

**Math**

Using the digit 1 to 9 once, write the largest possible 9-digit number that can be formed in which the digit in the hundred millions place is twice the digit in the thousands place, and the digit in the hundred thousands place is one-half the digit in the ten millions place.

**math grade one**

Nomber 20 how many ways can you make equal groups write or draw the ways

**math**

Two triangles are similar. The ratio of their corresponding sides 1:4. 1. Find the ratio of their perimeters 2. What is the ratio of their areas

**math**

what would have a greater surface area? a cylinder that is flat and smooth or a cylinder that is threaded? I think the smooth one will because the threads remove area that needs to be covered?

**Math**

Ken planted a mongo seed. He noticed that the seed grew 1/5 times larger than the previous week. This week he measured the plant and found out that it is 10cm tall. How tall will the plant be in two weeks from now?

**math**

In a survey of 200 employees of a company regarding their 401(k) investments, the following data were obtained. 150 had investments in stock funds. 78 had investments in bond funds. 60 had investments in money market funds. 46 had investments in stock funds and bond funds. 38 ...

**math**

P=50-Q/10 ,total Cost Ofspring Water Are Given By. C(Q)=0.05Q2+2000. find output level(Q)of profit maximization.

**math**

Mrs. Dwayne has three boxes. The first box contains three red marbles and five blue marbles. The second box has four red marbles and six blue marbles. The third box has five red marbles and seven blue marbles. Mrs Dwayne pulls a marble from each box five times. but before her ...

**Math**

joe buys mugs for $2.50 each. If he sells them for $4, he can sell 60 mugs a week. For every 50 cents increase in price, he sells 6 fewer mugs per week. Determine the price which will maximize Joe's profits.

**Math**

Tickets are drawn to determine first prize money is s100, 000. Each succeeding prize paid 60% as much as the ticket before it. What was the prize money for the 6th ticket drawn? Use the appropriate formula. (Answer = $7776)

**Math**

Tickets are drawn to determine first prize money is s100, 000. Each succeeding prize paid 60% as much as the ticket before it. What was the prize money for the 6th ticket drawn? Use the appropriate formula.

**Math/Probability**

Q. If tossing a fair coin, how many tosses does it take to get two heads in a row, on average? _________________________________________________ I was a bit unsure about what 'on average' meant. I'm a bit unsure about what I tried: I considered cases of getting two ...

**Math**

Susan spent 2/5 of her money on clothes and 1/3 on pair of shoes what fraction of her money was left

**Math**

Helen calculated that she paid $1.50 per 100g for the usable part of the fish. How did Helen calculate $1.50?

**math**

divide the sum of 65/12and12/7by their difference.

**math**

Ques1- represent numberline -7/3. Ques2- divide the sum of3/8and -5/12by the reciprocal of -15/8 *16/27

**Math, science.**

If two parallel lines are intersected by a transversal, prove that the bisectors of the interior angles on the same side of the transversal intersect each other at right angles.