# Math

## Recent Questions

**Math**

The average age of man and his son is 28 years the ratio of their ages 3 : 1 respectively what is the man's age

**math**

A journey between two towns,pitermaritzburg and Durban is exactly 90km use a graph to model how variation in time taken to complete the trip

**Math**

The HCF and LCM of two numbers are 8 and 504 respectively one of the numbers is 72 find the other number

**Math**

I have done this problem converting numerical expression to word problem . Like (12x2)+(4x3) At arcade Jeff got 12 plushy for 2 coins each and 4 hand clapper for 3 coins each. Question asked how many coins he paid to buy all these toys? Answer is - 36 Now I am stuck with this ...

**Math**

In a laboratory, a certain culture of bacteria doubles every hour. If there are originally 20 bacteria in the culture, how many are present after 10 hours? 11 hours?

**math**

a rectangular courtyard is 57m 50cm long and 22 m board . determine the least possible number of square stones of the same size required to pave it ?

**Math**

How many blocks are needed to build a stair step pattern that has a base of 10, a height of 10, and where each step is one block high and one block deep?

**math**

a die is thrown twice, find the probability of getting two 5’s. Be sure to represent your answer as a fraction in simplest form!

**math**

find the smallest number of five digits divisible by each of 16,24 and 30.

**math**

determine the largest number of four digits which is divisible by 18,25, and 35.

**Math-college**

Can you please help with this one. Find an nth-degree polynomial function with real coefficients satisfying the given conditions. n=4 2 i and 4 i are zeros; f(-1)=85 f(x)= (Type an expression using x as the variable. Simplify your answer.)

**Math**

I have to write a word problem with this expression. (3x2)x(3x15) Please help. Thank you!

**Math**

In a circle whose center is O, arc AB contaisn 100 degrees. Find the number of degrees i angle ABO?

**Math**

insert +, -, X, /, and () to make each math statement true 4 4 4 4 = 10 4 4 4 4 = 6

**Math**

Hi i have to do a worksheet for school. I'm not asking for the answers just how to evaluate things such as radical 13 or two radical 3? Please help!!

**math**

How many dimes are there in n nickels and q quarters?

**Math**

A baseball team won 50 of the first 92 games played in a season. If the season consists of 152 games, how many more games must the team win to finish the season winning 62 1/2% of games played?

**Math**

A book dealer bought 100 books for $1250. If she sold 30% of these at $10 each and the rest at $15 each, what was her total profit?

**Math**

On a map scale is shown is 1 inch equals 5 miles. If an island is 2.5 in.² on the map what is the actual area of the island

**MATH FRACTIONS**

IF THE RED SOX WON 55 GAMES OUT OF 100 PLAYED WHAT IS THE FRACTION OF WINS

**Math-college**

Explanation of why the following statement is incorrect. (x + 3)(x -4) < 7, and explain why it is incorrect. To solve (x + 3)(x -4) < 7, start by setting (x + 3) = 7 and (x - 4) = 7. Now solve the inequality. Provide a detailed explanation of why using this method to ...

**Math**

102 is the product of 6 and Raj's savings

**MaTh**

find the value Of k of the product pf the roots of 2x square - 6x + k = 0 is 4.

**Math**

If Vr=[sin(B/2)]*{cos[A+(B-1)r],how do we write Vr in the form, Vr=f(r) - f(r-1) ? Thank you!

**Math**

Many solved 25 questions of his math assignment.This was 1/8 of total questions. He does not know 1/5 of the rest. How many questions were there in all? How many did he not know?

**Math**

Tammy wants to make a pattern of multiples of 2, that are also factors of 16. What will be the numbers in Tammy's pattern?

**Math**

The first day on a March calendar is Saturday. the month of March has 31 days. On which day of the week is the last day of March?

**Math**

A 3 by 3 array of blocks is painted so that every other row, starting with row 1, begins with a red block, and the alternate rows begin with a black block. Does the 12th row begin with red or black?

**Math**

Which multiples of 4 are also factors of 36?

**Math**

Explanation of how to find the asymptotes of the graph of a rational function.

**Math**

Bret is presently 9 years older than Juan. In 8 years, 6 times Bret's age will equal 7 times Juan's age. What are Bret's and Juan's present ages?

**math**

a sum of money is shared among three brother ,eidest recive 7/13 of it the next recive 2/3 of the remainder. if the youngest brother recive s6 find the sum of money shared

**math**

A baseball is thrown into the air with an upward velocity of 25 ft./s. It's height in feet after T seconds can be modeled by the function h(t)=-16t^2 +25t+5. how long will it take the ball to reach it's maximum height? What is the balls maximum height?

**math**

A pair of 6 sided fair dice are rolled. If one of the dice shows an odd number what is the probability of the sum of the dice being 7 ?

**math**

A deli oﬀers sandwiches to order with the following options. One can select one of 3 types of bread, one of 5 types of spreads and three of 7 types of vegetables. How many diﬀerent sandwiches are oﬀered by the deli.

**math**

determine the sum of all the numbers that can be formed with the digits 1,2 and 3, each digit occurring only once in a number?

**Math**

If tph,qth and rth term of a gp are a,b,c respectively ,then a^q-r,b^r-p.c^p-q is...

**math**

Calculate the sum of all possible two-digits numbers using the digits 3 and 4?

**math**

to simplify (2sqrt(b)-sqrt(3a))(2sqrt(b)+sqrt(3a)) answer is -3a+4b. how would you get this?

**Math**

What is the square root 5900

**Math**

A chef makes 4 different quiches as the special of the day. At the end of the day, each dish had 3/8 of the quiche left. How much quiche was bought in all? Could someone please explain how to solve this problem?

**math**

al has ribbon and I need some he has 5 and I have 2. how many do both of use have to make it even?

**math**

the volume of a cube is 125 cm find each side of the cube above

**Math fractions**

Holly had 30 pencils. She gave 6 pencils to her friends. Three-eighths of her remaining pencils need to be sharpened. How many of Holly's pencils need to be sharpened? How to write this problem in numerical?

**math**

what is the answer for it

**math**

The perimeter of square A is 81 inches. The length of each side of square B is 1 inch less than the length of each side of square A. One side of square B is ___ inches in length.

**Math**

How can I graph this equation: (x-squared + y-squared - 1)cubed = x-squared times y-cubed ? Is there a polar form of the equation?

**math**

a room is 30 ft long, 25 ft wide and 14 ft high. if 42 balloons are inside the room, how many cubic feet of space does this allow for each balloon?

**math**

if 16 profit on a mobile set is 832 find the cost price of mobile set

**Math**

What is the base leg of an isosceles triangle if the other base is 4cm?

**math**

When a situation can be modeled by a linear equation, what information do you need in order to find an equation?

**math**

Ricky had come limes. he gave 25% of the limes to roberta and sold Tonia 2/9 of the remainder. He remained with 280 limes. Calculate a) how many limes Ricky had at first b) Tonia gave .375 of her limes to her mother. How many limes did Tonia keep for herself? c) Calculate the ...

**math**

A cake and three ice creams together cost $210. Mary bought a cake and two ice creams for $200. a) Calculate the cost of 1 ice cream b) the cost of the cake c) the cost of 3 cakes and 5 ice creams

**math**

if one inch= 20 feet how many feet is 1/16"?

**math**

How many terms of the arithmetic sequence 88, 85, 82, . . . appear before the number -17 appears?

**Math**

Determine the zeros of each function by factoring: a. f(x)=-2x^2-5x+12 b. f(x)=2x^2-3x-2 c. f(x)=x^2-10x+24 I have been trying to figure these out for awhile and am stuck. Please and Thank you for help.

**math**

For a normal distribution with mean of 80 and a standard deviation of 8, find the number of standard deviations the raw score 67 is from the mean (Give answer as a positive value rounded to nearest hundredth). (67 - 80) / 8 = 13/8 is this the right answer

**Math**

The largest 4 digit number which is exactly divisible by 18, 25 and 35. Find the smallest number by which 1008 must be. multiplied to get a perfect square. Also find the square root of square so obtained. 1225 plants are to be planted in a garden is such a way that each row ...

**math**

1+1

**math/econ**

If the demand is x(p)=40(p-15^2) with p being the price and x being hte demand, what would the elasticity of demand equation be?

**Math**

Ernie walks 1/6 mile in 1/12 hour when he walks along the river trail. How many miles does Ernie walk when he hikes on the trail

**Math**

Lisa has 3/5 as many cookies as Betty.If Lisa gives 1/3 of her cookies to Betty,what will the ratio of Lisa's cookies to Betty's cookies be.

**math**

What is the total capacity in gallons of a rectangular tank 5 meters in height knowing that it will hold 200 liters per foot?

**math**

The scale on amount is 2 inches equals 75 feet. On the map a rectangle or park is 8 inches long and 3 inches wide. What is the actual area of the park? Please answer I am confused.

**Math**

if 2m + n= 7, then 9m+3n= i tried using elimination for this one too. I tried to find m m= 7-n/2 Then i plugged it into the first equation. and somehow i got 7=7 ??? CAN SOMEONE PLEASE EXPLAIN

**Math**

If 5x and 9y =28 and x and y are positive integers what is the value of x?

**math**

For a normal distribution with mean of 80 and a standard deviation of 8, find the number of standard deviations the raw score 67 is from the mean (Give answer as a positive value rounded to nearest hundredth).

**math**

$12,000, invested for 7 years at 3% compounded quarterly.

**Math**

If you had 2 cookies and you ate one. How many cookies do you have left?

**Math**

If you have two cookies and you ate one. How many cookies do you have left?

**math**

how do I solve problems like this? 64x1 7/24

**math**

Emma is X months older than molly. If molly is 9 months old, write an expression for emmas age M= Months x= emmas age XM= 9 ?

**math**

A computer printer can print a 660-word document in 35 seconds. At this rate, how many seconds are required to print a document that contains 840 words?

**Math**

Perimeter of the equilateral triangle whose side 3x square +4x +8

**Math**

the probabilities that a customer will rent 0 1 2 3 and 4 DVDs on a single visit to the rental store are 0.15, 0.25, 0.3, 0.25 and 0.05, respectively. construct a probability distribution for the data and draw a graph for the distribution

**Math**

A bus service center has 2 feed services that start together at 8 a.m. Bus A leaves at 15 minutes interval, while bus B leaves at 20 minutes interval. On a particular day , how many times do both services leave together from 8 a.m. to 11 a.m.?

**Math**

A children's park is 350m long and 200 m wide. It is surrounded by a pathway of uniform wittd. Suppose the total area of the park and the pathway is 74,464 meter square. How wide is the pathway?

**Math**

I am thingking of a number thrice my number minus 6 equals 66 what is my number?

**Math**

Find the perimeter of the equilateral triangle whose side 3x square +4x +8

**math**

si spend2 /3 of his study for home work & remaining for revisions, if his study is 9/2hours a day, how much time does he spend revising in a week?

**math**

A pie is cut in to 10 equal sector find the measure of the central angle of one slice of pie

**math**

ram salary is 350000/annum,he spends3/5 of his salary for charity. what is the amount he spend for charity, and what is the amount left with him?

**Math**

A body of 6 kg rest in limiting equilibrium onan inclined plane whose slope is 30° the plane is raised to a slope of 60 degree the forcw in kg weight around the plane required to support it is

**Math**

A woman is 45 years old. Her daughter is 12 years old.How many years it takes until the daughter is half as old as her mother?

**Math**

Find (-6/7+18/28)*-7/5

**math**

Jerome will be buying a used car for $9 comma 0009,000 in 22 years. How much money should he ask his parents for now so that, if he invests it at 99% compounded continuouslycontinuously, he will have enough to buy the car?

**math**

Steven is moving to another city next weekend and wants to rent a moving truck. The rental rates for two companies in his area are shown below. Each company charges an initial fee for renting the truck, plus an additional amount per mile. Calculate how much each company ...

**Math**

If the diameter of a circle P is 40 percent of the diameter of circle Q, then the area of circle P is what percentage of the area of circle Q? Not enought information given right?

**Math**

Two planes start at 11AM from two airports 1800 miles apart, and fly toward each other at average rates of 200 and 250 miles per hour. the time at which they pass each other will be? (A)4:30 PM (B)2:30 PM (C)2 PM (D)3 PM

**Math**

The probability of drawing a peppermint candy out of a jar of 25 candies is 1/5. How many more peppermint candies should be added to the jar in order to increase the probability of drawing a peppermint candy to 1/3? (A) 5 (B) 10 (C) 15 (D) 30

**Math**

Use the digits of your birthday as the amount of your initial investment (i.e., 6/25 is $625), calculate the value of this investment after 10 years at 3.5% APR for interest compounded yearly, quarterly, monthly, and daily. What do you notice?

**math**

If 3/x= 6, then x-1= I tried to solve for x and got 2, but 3/2 does not equal 6??

**Math**

A jug can hold 3 times as much juice as a mug if the jug can hold 2 L of juice how much juice in liters can the mug hold

**math**

Mr usher is 184cm tall and his sister sarah is 5/8 as tall as him. How tall is sarah

**Math**

Hoping Henry can help on previous prob. A ball is thrown upwards from a roof top, 80ft above the ground. It will reach a maximum vertical height and then fall back to the ground. The height of the ball from the ground at time T is H, which is given by H= -16t2 + 64t +80. V = ...

**Math**

4th and 7 terms of a G.P. are 1/18 and -1/ 486 respectively. Find the G.P. My solution: ar^3=1/18.... eq no1 ar^6=-1/486...eq no2 ar^6/ar^3 = -1/486÷1/18 r^3=-1/27 r=-1/3 Place this value in equation 1 ar^3=1/18 a*-1/3^3=1/18 a*-1/27=1/18 a=-7/6 Required GP: a=-7/6 ar=-7/6*1/...

**math**

mass of earth is 5.97x10^24kg. and mass of moon is 7.35x10^22kg what is the total mass

**Math**

A box contained apples,oranges and pears.3/5 of the fruits were apples and 1/4 of the fruits were oranges.What fraction are the pears?

**math**

if one root of the quadratic equation is 3+2root2 then what will be the other root?

**math**

If you put 200 tagged fish in a pond, then collect a sample of 50 and 8 of them are tagged. How many fish are in the pond?