Saturday

October 22, 2016
**math**

A cone of fixed height 12 inches is changing in shape through the change in the radius of the base. What rate of increase of the radius will make the lateral surface area of the cone increase at the rate of 10 ! square inches per minute when the radius of the base is 5 inches?

*Saturday, October 15, 2016 by My7ws4*

**math**

A ladder rests against a vertical pole. The foot of the ladder is sliding away from the pole along horizontal ground. Find the inclination of the ladder to the horizontal at the instant when the top of the ladder is moving 3 times as fast as the foot of the ladder.

*Saturday, October 15, 2016 by My6ws4*

**math**

Two aeroplanes fly eastwards on parallel courses 12 miles apart. One flies at 240 m.p.h. and the other at 300 m.p.h. How fast is the distance between them changing when the slower plane is 5 miles farther east than the faster plane?

*Saturday, October 15, 2016 by My5ws4*

**math**

A barge whose deck is 5 metres below the level of a dock is being drawn in by means of a cable attached to the dock and passing through a ring on the dock. When the barge is 12 metres away and approaching the dock at 3 4 metre per minute, how fast is the cable being pulled in?

*Saturday, October 15, 2016 by My4ws4*

**Math**

find four consecutive odd integers such that the sum of the least integer and greatest integer is 164

*Saturday, October 15, 2016 by Gloria*

**Math**

X is a normal variable with mean 9. If P(X > 12) = 0.0062, calculate the standard deviation, the standard deviation if X.

*Saturday, October 15, 2016 by Grace*

**math**

find the function rule x -2 -1 0 1 2 y 9 4 -1 -6 -11

*Saturday, October 15, 2016 by angie*

**Math **

The sum of the ages of two student is 35. If one students age is a write an expression for the age of the other student in terms of a

*Saturday, October 15, 2016 by Andrea*

**math**

if n=2^2x3^2x7 and m is a natural number,how many possible values can m have at the most such that n/18m is a whole number?

*Saturday, October 15, 2016 by iselle*

**Functions - math**

The function f is such that f(x) = a^2x^2 - ax + 3b for x<=(1/2a), where a and b are constants. 1) For the case where f(-2) = 4a^2 - b +8 and f(-3) = 7a^2 - b + 14, find the possible values of a and b. 2) For the case where a = 1 and b = -1, find an expression for inverse f...

*Saturday, October 15, 2016 by Desperately seeking help*

**math**

What are the similarities between organized counting and permutation? Explain using examples. I can only think of one similarity: they both use probability problems using counting P(event)= Number of favourable outcomes/Total number of possible outcomes. Thanks for your help.

*Saturday, October 15, 2016 by Jenna*

**Math**

The length of rectangle A is 1/3 the length of rectangle B.The width of rectangle A is twice the width of rectangle B.Find the ratio of the area of rectangle A to the area of rectangle B.

*Saturday, October 15, 2016 by Chase*

**Math**

The average of 4 numbers is 48.If the two middle numbers add up to 130,what is the average of the smallest and largest numbers?

*Saturday, October 15, 2016 by Chase*

**Math**

The ratio 2/3:3/4 is equal to the ratio of 24 to ___?

*Saturday, October 15, 2016 by Chase*

**math**

The area of a right triangle whose hypotenuse is 15cm and whose height is 12cm is 54sq. cm.What is its perimeter?

*Saturday, October 15, 2016 by iselle*

**Math**

If M is a multiple of 5 and N is a factor of 26 ,which of the following could be equal to 48? A.MN B.M+N C.M/N D.M-5N

*Saturday, October 15, 2016 by Chase*

**math**

Carla had twice as much money as Vida. After carla gave 12 pesos to vida,carla still had 10 pesos more than vida. how much was the total money of the 2 girls in the beginning?

*Saturday, October 15, 2016 by iselle*

**Math**

The length of rectangle A is 1/3 of the length of rectangle B.Find the ratio of the area of rectangle A to the area of rectangle B?

*Saturday, October 15, 2016 by Chase*

**math**

How many ways can 9 people be arranged to sit at a round table if Sam can not sit between Ron and Ed? My solution: 7! Thanks for your help.

*Saturday, October 15, 2016 by Jenna*

**math**

lim x→0 of [2-cos3x-cos4x]/(x)

*Saturday, October 15, 2016 by tish*

**math**

lim x→0 of [tan(3x^2) + sin^2(5x)] / (x^2)

*Saturday, October 15, 2016 by tish*

**math**

in a grade 7 class, 36 students are either members of the math club or science club or both. 10 students are members of both clubs. if 31 students are members of the math club how many are members of the science club?

*Saturday, October 15, 2016 by iselle*

**math, science, algebra**

If the compound interest on $1000 for two years at 9% p. a. , payable half-yearly is $x, find x.

*Saturday, October 15, 2016 by grace leung*

**eng, math, science, geography**

The marked price of a book is double that of its cost. In a sale, what percentage discount was given if the profit made was 20% of the cost?

*Saturday, October 15, 2016 by grace leung*

**Math**

Please answer my question :( If y varies inversely as the cube of x , what is the effect in y if x is halved

*Saturday, October 15, 2016 by Grace ann*

**math (Reiny please help)**

There are 5 Rock songs, 6 country songs and 3 hip-hop songs. How many different albums can be formed using the songs if the albums should contain at least 1 Rock song and 1 Country song? My solution: total number of songs is 5!6!3!=518,400 the number of different albums is ...

*Saturday, October 15, 2016 by Anonymous*

**math (Reiny please help)**

There are 15 available toppings and 5 different pizza sizes in a pizza restaurant. If Maria wants to order a 4-topping pizza, how many different pizzas could she order? My solution: 15C4/5! 4 topping 15C4=1365 Is this correct? Thank you.

*Saturday, October 15, 2016 by Anonymous*

**Math**

The slant height of 36 cubic a cone remains constant at 6 metres. If the radius is increasing at 5 metres per second how is the volume changing when the radius is 3 metres? What is the maximum volume?

*Saturday, October 15, 2016 by My*

**Math **

A lawn is 3 m by 5 m there is a path 1 m wide laid around the lawn. Find the area of the lawn (Please help)

*Saturday, October 15, 2016 by Amelia *

**Math**

The function f is such that f(x) = a^2x^2 - ax + 3b for x<=(1/2a), where a and b are constants. 1) For the case where f(-2) = 4a^2 - b +8 and f(-3) = 7a^2 - b + 14, find the possible values of a and b. 2) For the case where a = 1 and b = -1, find an expression for inverse f...

*Saturday, October 15, 2016 by Anonymous*

**math**

There are 42 student in a class 3/4 of the boys and 2/3 of the girls travel to school by bus. The total number of boys and girls who come to school by bus is 30. How many boys are there in the class?

*Saturday, October 15, 2016 by mateen*

**math**

Rainfall for August in Fiji averages 11" according to World Travel Guide. This year it rained 2% less. How many inches did it rain this year?

*Saturday, October 15, 2016 by Anonymous*

**Math**

If recipe takes 1-1/4 cups of sugar to 2 cups of milk but if you only have 1 cup of sugar then how much milk do you use?

*Saturday, October 15, 2016 by Dan*

**Math**

Lani, Sue, and Jill begin jogging around a quarter-mile track at the same time. Lani takes 2 minutes to complete each lap, Sue takes 3 minutes and Jill takes 4 minutes. How long will they have been jogging when they first meet up again at the point where they began? How many ...

*Saturday, October 15, 2016 by Mae*

**math**

To repair his kitchen subfloor, John cut a rectangular piece of plywood such that the width and length were two consecutive odd integers. If the product of the length and width is 575 , what were the dimensions of the piece of plywood?

*Saturday, October 15, 2016 by lem*

**Math **

In a class of 30 students,all of whom study history or geography,20 passedo history and 18 passed geography. If xerox is the numBerlin who passedo both history and geography. What is the greatest possible value of x? And the least possible value of x?

*Saturday, October 15, 2016 by Vidia*

**Math 1105**

- The heights of a ball (in feet) thrown with an initial velocity of 90 feet per second from an initial velocity of 90 feet per second from an initial height of 4 feet is given as a function of time t(in seconds)by s(t)= -16t^2+90t+4

*Friday, October 14, 2016 by Rocio*

**math**

place brackets in the following statement to make it true 20 - 6 x 2 + 1 = 2

*Friday, October 14, 2016 by katie*

**math **

place brackets in the following statement to make it true 20-6x2+1=2

*Friday, October 14, 2016 by katie *

**Math**

The denominator of a fraction is 2, more than twice the numerator. If 7 is added to both the numerator and the denominator the new fraction would be equivalent to 2/3. Determine fhe original fraction.

*Friday, October 14, 2016 by Anonymous*

**math**

one side of a triangle is 4 cm. The sum of the two other sides is 11 and all sides are integers. What is the largest possible side.

*Friday, October 14, 2016 by ismael*

**math (Reiny please help)**

There are 15 available toppings and 5 different pizza sizes in a pizza restaurant. If Maria wants to order a 4-topping pizza, how many different pizzas could she order? My solution: 15C4/5! 4 topping 15C4=1365 Is this correct? Thank you.

*Friday, October 14, 2016 by Anonymous*

**math (Reiny please help)**

There are 5 rock songs, 6 country songs, and 3 hip-hop songs. How many different albums can be formed using the songs if the album should contain at least 1 rock song and 1 country song? My solution: total number of songs is 5!x6!x3! Number of different albums is 5x6x14C3 Is ...

*Friday, October 14, 2016 by Anonymous*

**math**

A girl stands on the edge of her dorm roof and throws a ball into the air. The ball's height above the ground after t seconds is given by h equals negative 16 t squared plus 64 t plus 80h=−16t2+64t+80. When will the ball hit the ground?

*Friday, October 14, 2016 by lem*

**Math**

The towns highway department marks a new road with reflective markers. The road is 6 3/4 miles in length. The markers ar expanded every eighth 1/8 mile of a mile. A. What is a division problem to find how many markers ar installed B. Solve the problem C. Explain the answer

*Friday, October 14, 2016 by James (PLEASE ANSWER)*

**Math**

You are supposed to come up with an equation to solve this problem. I have figured out how to do it, just not what the equation is supposed to look like. Anyways, here is the word problem. The taxi fare in Gotham City is $2.40 for the first .5 miles, and additional mileage is ...

*Friday, October 14, 2016 by Abigail*

**Math**

the towns highway department marks a new road with reflective markers the road is 6 3/4 miles in length the markers are spaced every length 1/8 of a mile. What is an expression that can be used

*Friday, October 14, 2016 by Daniel*

**Math**

Define a variable and write and inequality for the statement: In order to earn credit for your Alegebra 1A course, you must earn at least a 70%. I'm not really sure how to answer this if someone can please help me step by step to figure this out. Thank You

*Friday, October 14, 2016 by Anonymous*

**Math**

The scale on a map of Canada is 1: 8000000. The distance from Prince George, B.C., to Fredericton, N.B., is 5320 km. What is the distance between these 2 places on this map?

*Friday, October 14, 2016 by Anonymous*

**Math**

What makes the statement true? 7^-2=? A- 49 B- 1/49*** C- 14 D- 1/14 Am I correct?

*Friday, October 14, 2016 by Ruby*

**math check answers**

1. A surplus is _____. (1 point) when you spend more than you have in income when you spend less than you have in income when ...

*Friday, October 14, 2016 by Anonymous*

**math**

"solve each problem and write your answers in scientific notation." 1. (6.0•10^5) •(3.0•10^4) 2.(5•10^-2)/(2•10^3) 3.(2.56•10^6)•(3.56•10^2) 4. "In a recent year , the population was about 2.52•10^7 people. Its...

*Friday, October 14, 2016 by carley*

**Math**

What is the of product of multiplication 8x25x23 using subtraction

*Friday, October 14, 2016 by Sani*

**Math**

the towns highway department marks a new road with reflective markers the road is 6 3/4 miles in length the markers are spaced every length 1/8 of a mile

*Friday, October 14, 2016 by James*

**math**

A room contains 80 sophomores of which 39 are males and 41 are females. There are also 69 juniors of which 36 are males and 33 are females. You pick 3 students at random. What is the probability that all 3 are males?

*Friday, October 14, 2016 by help me*

**Math (just need some help)**

Solve the system using an augmented matrix. -x-3y=-17 2x-6y=-26 Can someone please explain what I am supposed to do in this problem?

*Friday, October 14, 2016 by Olivia N J*

**math**

give a counterexample for the following conditional statement. If you live in West Virginia, then you live in Charleston.

*Friday, October 14, 2016 by maggie*

**math**

The second term, the fifth term and eleventh term are in a Gp.if the eleventh term is 4.Find the difference between the sums of each progression

*Friday, October 14, 2016 by daphne*

**Math**

Jared bought a cell phone for $42. Juanita spent 1 1/2 times as much. How much did she spend? Thank you very much!

*Friday, October 14, 2016 by Tan*

**Math (just need some help)**

A jet ski company charges a flat fee of $24.00 plus $2.25 per hour to rent a jet ski. Another company charges a fee of $23.00 plus $2.50 per hour to rent the same jet ski. Using a graphing calculator, find the number of hours for which the costs are the same. Round your answer...

*Friday, October 14, 2016 by Olivia N J*

**Math**

In Buffalo, New York, the temperature was 14°F in the morning. If the temperature increased 8°F, what is the temperature now?

*Friday, October 14, 2016 by Anonymous*

**math**

60% of the students in a school are boys. 70% of the boys and 40% of the girls wear glasses, how many students are there in the school?

*Friday, October 14, 2016 by grace*

**Math**

In Buffalo, New York, the temperature was 14°F in the morning. If the temperature increased 8°F, what is the temperature now?

*Friday, October 14, 2016 by Anonymous*

**Math **

If recipe calls for 3 parts of flour to sugar . what would the raito be if you doubled thr recipe.

*Friday, October 14, 2016 by Shanti*

**Math**

-1/2 + 1/3= A.-1/6 B.-1/3 C.2/3 D.1/6 -3 5/1 + (-6 1/2)= A.-3 2/7 B.-3 7/10 C.-9 2/7 D.-9 7/10 5/8 -(-2/8)= A.-3/8 B.-7/8 C.3/8 D.7/8 -9/10 - 2/5= A.-1 3/10 B.-1 1/10 C.-7/10 D.-5/10 6 3/5-(-2 1/5) A.-8 2/5 B.-4 2/5 C.4 2/5 D.8 2/5 SOMEONE PLEASE HELP ME!!!

*Friday, October 14, 2016 by Clair *

**math**

There are 5 rock songs, 6 country songs, and 3 hip-hop songs. How many different albums can be formed using the songs if the album should contain at least 1 rock song and 1 country song? My solution: 14C5x14C6x14C3-5C1x6C1 Is this correct? Thanks in advance

*Friday, October 14, 2016 by Anonymous*

**Math**

I walked 2/7 of a mile in 4/9 of an hour. at this rate, how far will I have traveled after an hour?

*Friday, October 14, 2016 by Maria*

**Math**

Solve. Movie tickets cost $9.50. How much change will a customer who pays for one ticket with a $20.00 bill received?

*Friday, October 14, 2016 by Emilia*

**Math (Reiny please help!)**

Solve the system by substitution. -x-y-z=-8 -4x+4y+5z=7 2x+2z=4 I am very confused about this. Can someone please explain how to do this?

*Thursday, October 13, 2016 by Olivia N J*

**Math**

1) A television tower is 160 feet high and an observer is 120 feet from the base of the tower. Find, to the nearest degree, the angle of elevation of the top of the tower from the point of observation. 2) A vertical pole 22 meters tall casts a shadow 16 meters long on level ...

*Thursday, October 13, 2016 by Lauren*

**math**

wx + zy = c Solve for y. I don't understand this. If you know what Carnegie is, then you would know I don't really understand. So please help me. help me with the steps

*Thursday, October 13, 2016 by jess*

**Math HELP!**

Find the function rule. x -2 -1 0 1 2 y 9 4 -1 -6 -11

*Thursday, October 13, 2016 by Callie*

**math**

What is the value of t in the equation below? (7^-64)x(7^-150)/(7^-7)x(7^2)=7^t Help please i get lost when its a huge problem like this but if it's short i can solve it. (7^-64)x(7^-150)/(7^-7)x(7^2) = 7^(-64-150+7-2) = 7^-209 so, t = -209 answer is= 209 and its wrong i ...

*Thursday, October 13, 2016 by IDontKnow*

**math**

A ribbon is 3 metres long. I need 8 pieces of ribbon each 40 cm long How many centimetres shorter is the ribbon than the length I need?

*Thursday, October 13, 2016 by vinit*

**math**

The Infinity Club consists of 5 boys and 6 girls. How many working groups of 5 people can be formed with: a)no restrictions (my answer is 11C5) b)all boys (is this correct 5C5) c)all girls (my answer 6C5) d)more girls than boys (answer 6C4x5C1 +6C3x5C2)? e)more boys than girls...

*Thursday, October 13, 2016 by Anonymous*

**math**

In how many ways the letters in BIOENGINEERING be arranged if B must not be next to the O. Thanks in advance (is this correct answer 14!-(13!x2!)

*Thursday, October 13, 2016 by Anonymous*

**Math**

Convert 1.584 feet per hour to miles per hour (mph)

*Thursday, October 13, 2016 by Jenny*

**Math**

Parmjit has 8 base ten blocks. She has at least one of each type of block. The value of her blocks is between 400 and 600. What blocks could she have? Find the possible answers using an organized list.

*Thursday, October 13, 2016 by Joël*

**Math**

Convert 4.5 feet per second to inches per second

*Thursday, October 13, 2016 by Jenny*

**Math**

Convert 6.2 feet per minute to feet per hour

*Thursday, October 13, 2016 by Jenny*

**Math**

Convert 6.81 inches per minute to inches per second

*Thursday, October 13, 2016 by Jenny*

**Math**

Is 450 divisible by 5, 9, and 10?

*Thursday, October 13, 2016 by aiyahna*

**Math**

Complex numbers 5i+7i x i

*Thursday, October 13, 2016 by Aria*

**math**

Amy is catching a flight for London at 12:00 noon. Prior to leaving for the airport, she needs to allow 30 minutes for a shower and 30 minutes to finish packing last minute items. She also needs to give herself 1 hour to drive to the airport. If she needs to arrive for her ...

*Thursday, October 13, 2016 by Anonymous*

**Math**

What point maximizes the objective function P = 4x + 3y for the constraints below. What is the maximum value? Constraints: x>=0 y>=0 y<=1/3x-4 6>=y

*Thursday, October 13, 2016 by Aaron*

**math**

There was a total of $548 collected for tickets to the school play. The adult tickets cost $6, and the student tickets cost $4. If 12 more student tickets were sold than adult tickets, find the numbers of adult and student tickets sold.

*Thursday, October 13, 2016 by Anonymous*

**Math**

convert 5.1 feet per ;minute to year per minute

*Thursday, October 13, 2016 by Jenny*

**Math -data management**

There are 5 rock songs, 6 country songs, and 3 hip-hop songs. How many different albums can be formed using the songs if the album should contain at least 1 rock song and 1 country song? My solution: 14C5x14C6x14C3-5C1x6C1 Is this correct? Thanks in advance

*Thursday, October 13, 2016 by Mark*

**Math**

Alyssa started hiking at an elevation of 1500 feet. After 2 hours, she was at 1200 feet. Which integer describes her change in elevation?

*Thursday, October 13, 2016 by Eleanor *

**Math (connexus)**

has anyone done the math quiz for unit 5 lesson 5 for 7th grade because i need help

*Thursday, October 13, 2016 by cookie man*

**Math**

The length of a rectangular board is 10 cm longer than its width. The width of the board is 26 cm. the board is cut into 9 equal pieces. What is the area of each piece? What are the possible dimensions of each piece?

*Thursday, October 13, 2016 by Brian*

**Math**

Two cars leave the same place at the same time and travel in the same direction. One car is traveling at 65 mph, and the other car is traveling at 50 mph. How long will it take for the two cars to be 97.5 miles apart

*Thursday, October 13, 2016 by Anonymous*

**Math**

6 fractions between 1//2 and 6/7

*Thursday, October 13, 2016 by Anonymous*

**Math**

How do you turn 1/8 into a percentage?

*Thursday, October 13, 2016 by Jenny*

**Math**

Fractions between 2/11 and 1/2

*Thursday, October 13, 2016 by Serena*

**math**

What is the value of t in the equation below? (7^-64)x(7^-150)/(7^-7)x(7^2)=7^t Help please i get lost when its a huge problem like this but if it's short i can solve it.

*Thursday, October 13, 2016 by IDontKnow*

**Math**

Need help least to greatest 0.5,0.05,5/8

*Thursday, October 13, 2016 by jillian *

**math**

simon bought 4 packages of holiday greeting cards. each package was $6. simons packages contained 36 cards althogher. how many cards are in the package?

*Thursday, October 13, 2016 by emma/emily*

**Math**

18. In 2000, the circulation of a local newspaper was 3,250. In 2001, its circulation was 3,640. In 2002, the circulation was 4,100. a. Find the percent of increase in the newspaper’s circulation from 2000 to 2001 and from 2001 to 2002. b. Which period had a higher ...

*Thursday, October 13, 2016 by EmberShy*

**Math**

Ramon planted 3 rows of seeds. He put 8 seeds in each row. Each row of seeds were 42 inches long. How far apart did Ramon plant the seeds

*Thursday, October 13, 2016 by Emily*