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October 22, 2014

October 22, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

To find the weight of the gold in a 22 karat gold object, multiply the object's weight by 0.917. To find the weight of the gold in an 18 karat gold object, multiply the object's weight by 0.583. A 22 karat gold statue and a 14 karat gold statue both weigh 73.5 ounces. ...
*Wednesday, October 22, 2014 at 2:51am*

**math**

plot the number on the number line 1 5/6
*Wednesday, October 22, 2014 at 2:44am*

**math**

the ice show went for 15 consecutive nights with a full house each night.If the stadium could seat 852 people,how many people saw the show?
*Wednesday, October 22, 2014 at 2:10am*

**Math**

Shawn goes to store and spends 1/3 of money on books. He spends 2/5 of the remaining money on games. He spends 1/4 of the remaining money on a DVD. He spends 1/6 of remaining money on a candy bar. He has $15 left. How much money did Shawn have originally?
*Wednesday, October 22, 2014 at 1:58am*

**math**

The scale for an earth model is 1:40000000. The diameter of the earth is 12,756.32km. a)What is the diameter of the model in cm? I got 31.9cm (just need help on part b!) b) If the model is cut in half, how many jars of paint would be needed to paint each half if 1 jar covered ...
*Wednesday, October 22, 2014 at 12:39am*

**Math 222**

222 - Steve, Wednesday, October 22, 2014 at 12:02am I assume you want to factor the expressions? a^4b + a^2b^3 = a^2b(a^2+b^2) z^2 + 18z + 45 = (z+3)(z+15) •Math 222 - Monica, Wednesday, October 22, 2014 at 12:10am Thank you Steve and can you please explain how you got ...
*Wednesday, October 22, 2014 at 12:23am*

**Math 222**

Please help me solve these two problems. My addition sign is not working on my keyboard. a^4b plus a^2b^3 18z plus 45plus z^2
*Tuesday, October 21, 2014 at 11:48pm*

**math**

A wheel made 660 revolutions at 44 8/9 revolutions per minutes. how many minutes did it rotate
*Tuesday, October 21, 2014 at 11:38pm*

**Math**

The scale for an earth model is 1:40000000. The diameter of the earth is 12,756.32km. a)What is the diameter of the model in cm? b) If the model is cut in half, how many jars of paint would be needed to paint each half if 1 jar covered 10cm^2?
*Tuesday, October 21, 2014 at 11:27pm*

**Math 222**

Please help me solve these two problems. My addition sign is not working on my keyboard. a^4b plus a^2b^3 18z plus 45plus z^2
*Tuesday, October 21, 2014 at 11:02pm*

**math,algebra,fractions, decimals**

Find 1 terminating decimal and 1 repeating decimal between 1/2 and 2/3.
*Tuesday, October 21, 2014 at 10:37pm*

**math**

Find 1 terminating decimal and 1 repeating decimal between 1/2 and 2/3.
*Tuesday, October 21, 2014 at 10:16pm*

**math**

4.5 by 6.12 original drawing want to increase size to 18 by 24. How do I do it?
*Tuesday, October 21, 2014 at 10:09pm*

**math**

A right square pyramid has a surface area of 75.5m^2 and a base length of 3.5m. What is the slant height of this right pyramid?
*Tuesday, October 21, 2014 at 10:03pm*

**math**

What do you do to check whether a number is rational or irrational? In your explanation, use an example of an irrational and a rational number. Please help me I don't know what to do.
*Tuesday, October 21, 2014 at 9:45pm*

**math**

To find the weight of the gold in a 22 karat gold object, multiply the object's weight by 0.917. To find the weight of the gold in an 18 karat gold object, multiply the object's weight by 0.583. A 22 karat gold statue and a 14 karat gold statue both weigh 73.5 ounces. ...
*Tuesday, October 21, 2014 at 9:39pm*

**math**

Can't figure this one out. The oceans' tide levels vary based on the phases of the moon. Find the percent decrease in tide levels when high tide is 4.25 ft and low tide is 0.75 ft above sea level.
*Tuesday, October 21, 2014 at 9:38pm*

**Math**

If the lateral area of a cone is 3685.1cm^2 and I were to paint the entire cone, the paint costs $1.99/jar and one jar of paint covers 400cm^2, how much will it cost?
*Tuesday, October 21, 2014 at 9:37pm*

**math**

I don't get how to put it in the the equation Interest=percent×rate×time This is the question The banded ribbon worm is a carnivorous aquatic worm. It measures about 2.5 ft. When expanded. Find the percent increase between the contracted and expanded length of ...
*Tuesday, October 21, 2014 at 9:25pm*

**math**

How does finding the square root [√] of a number compare to finding the cube root [little 3 on top √] of a number? Use the number 64 in your explanation. Please help me figure this out. I don't know what to do.
*Tuesday, October 21, 2014 at 9:19pm*

**math**

4/5-1/6
*Tuesday, October 21, 2014 at 9:15pm*

**math**

timmy had 1/2 of pizza left over.for lunch,he ate 1/3 of the leftover pizza.how much pizza is now left?
*Tuesday, October 21, 2014 at 9:06pm*

**math**

timmy had 1/2 of pizza left over.for lunch,he ate 1/3 of the leftover pizza.how much pizza is now left?
*Tuesday, October 21, 2014 at 9:02pm*

**math**

Defining capital structure weights) Templeton Extended Care Facilities, Inc. is considering the acquisition of a chain of cemeteries for $400 million. Since the primary asset of this business is real estate, Templeton’s management has determined that they will be able to ...
*Tuesday, October 21, 2014 at 8:57pm*

**math**

To find the weight of the gold in a 22 karat gold object, multiply the object's weight by 0.917. To find the weight of the gold in an 18 karat gold object, multiply the object's weight by 0.583. A 22 karat gold statue and a 14 karat gold statue both weigh 73.5 ounces. ...
*Tuesday, October 21, 2014 at 8:47pm*

**math**

Stretch your thinking. Use decimals and fractions in the same equation showing the commutative property. Repeat for the associative property
*Tuesday, October 21, 2014 at 8:42pm*

**Math**

The sum of the lengths of any two sides of a triangle must be greater than the third side. If a triangle has one side that is 22 cm and a second side that is 2 cm less than twice the third side, what are the possible lengths for the second and third sides?
*Tuesday, October 21, 2014 at 8:28pm*

**Math**

Stretch your thinking. Write a subtraction equation with a difference of 54.57 . Then draw a number line to show between which two whole numbers the difference lies.
*Tuesday, October 21, 2014 at 8:17pm*

**math**

A golf cart has either 3 or 4 wheels. John checked all 25. How many 3 wheeled how many 4 wheeled
*Tuesday, October 21, 2014 at 8:02pm*

**Math**

kate wants to buy a new bicycle from a sporting-goods store.The bicycle she want normally sells for $360. The store has a sale in which all bicycles cost 5/6 of the regular price. what is the sale price of the bicycle?
*Tuesday, October 21, 2014 at 7:58pm*

**Math**

kate wants to buy a new bicycle from a sporting-goods store.The bicycle she want normally sells for $360. The store has a sale in which all bicycles cost 5/6 of the regular price. what is the sale price of the bicycle?
*Tuesday, October 21, 2014 at 7:58pm*

**Math**

Mix W = 5 Cups Concentrate and 8 Cups Cold Water, Mix X = 3 cups concentrate 6 cups cold water, Mix Y = 6 Cups Concentrate 9 Cups cold water, Mix Z = 3 Cups Concentrate 5 cups cold water Question: If possible, write each comparison of concentrate to water as a ratio. If not ...
*Tuesday, October 21, 2014 at 7:52pm*

**math**

A craft store bought paint for a wholesale price of 100 the store charges a 65% markup what is the craft stores price for the paint.
*Tuesday, October 21, 2014 at 7:50pm*

**Math**

Marginal revenue the weekly revenue from the sale of emeralds at Eduardo’s Emerald Emporium (EEE) is decreasing at a rate of $500 per $1 increase in price and the price is decreasing at a rate of $0.45 per additional emerald sold. What is the marginal revenue? I am not ...
*Tuesday, October 21, 2014 at 7:07pm*

**math**

manuel says that you can use one of the denominators of 5/6 and 11/30 when renaming these fraction using a common denominator. why is this true
*Tuesday, October 21, 2014 at 7:01pm*

**math**

Andrew wants to rename 2/7 and 3/4 using a common denominator. which of the following shows these fractions renamed correctly. a 8/28 and 21/28 b 2/28 and 3/28 c 4/28 and 6/28 d 2/7 and 3/7
*Tuesday, October 21, 2014 at 6:59pm*

**math**

train A arrives at central station on the hour and every 12 minutes. train B arrives on the hour and every 15 minutes. when do both train arrives at the same time.
*Tuesday, October 21, 2014 at 6:42pm*

**math**

a punch recipe calls for equal amounts of pineapple juice and orange juice. pineapple juice comes in 6- ounce cans and orange juice comes in 10 ounce cans. what is the least amount of each kind of juice that can be mixed without having any left over
*Tuesday, October 21, 2014 at 6:31pm*

**math**

write my namein capital letters and write them in angle
*Tuesday, October 21, 2014 at 6:21pm*

**math**

Erin buys a bag of peanuts that weighs 3/4 lb later that week the bag is 2/3 full. How much does the bag of peanuts weigh now?
*Tuesday, October 21, 2014 at 5:53pm*

**Math**

what is 4/25 in a percentage? I think it is 64/100... Is that correct?
*Tuesday, October 21, 2014 at 5:53pm*

**Math**

How do I change these fractions to decimals? 3/4 1/5
*Tuesday, October 21, 2014 at 4:35pm*

**Math**

Am I right? Nobby Hobby charges $35.00 entry fee plus $18.50 per night of camping. Write an algerbraic expression for the cost in dollarsof entry to Nobby Hobby ($35.00+$18.50).n Thanks
*Tuesday, October 21, 2014 at 4:34pm*

**Math HELP!**

Which statement is true? A. Every real number is an integer. B. Every rational number is a real number. C. Every rational number is a perfect square. D. Every integer is an irrational. Is the answer A?
*Tuesday, October 21, 2014 at 4:23pm*

**Math HELP!**

When a skydiver jumps from an airplane, the distance d in feet the diver falls in t seconds before opening the parachute is given by the formula d=16t^2. The formula assumes that there is no air resistance. Find the time it takes a skydiver to fall 1,551 ft before opening the ...
*Tuesday, October 21, 2014 at 3:52pm*

**Math HELP!**

The formula v= square root 64h can be used to find the velocity, v, in feet per second, of an object that has fallen h feet. Find the velocity of an object that has fallen 75 feet. Round to the nearest tenth. A. 6.9 ft/s B. 69.2 ft/s C. 69.4 ft/s D. 69.3 ft/s Is the answer D?
*Tuesday, October 21, 2014 at 3:37pm*

**Math**

-k = 10 + 3x^3 - 6x - 7x^5 - x^2 - 2x^4 Is this k = 7x^5 + 2x^4 - 3x^3 + 6x - 10?
*Tuesday, October 21, 2014 at 3:33pm*

**math**

give 3 solutions of the inequality 5x-2>7 I'm confused. will I have 3 same answers, but have to work the problem 3 different ways, or will there be 3 different answers?
*Tuesday, October 21, 2014 at 3:31pm*

**Math HELP!**

An estimate for -square root 72 is? A. -8.1 B. -8.5 C. -9.1 D. -9.5 Is the answer A? Thanks
*Tuesday, October 21, 2014 at 3:25pm*

**Math HELP!**

As estimate for square root 47 is between? A. 4 and 5 B. 5 and 6 C. 6 and 7 D. 7 and 8 Is the answer A? Thanks
*Tuesday, October 21, 2014 at 3:06pm*

**Math**

Joy knits a square blanket that has an area of 1,500 square inches. What is the approximate length of each side of the blanket? A. 16 inches B. 27 inches C. 39 inches D. 42 inches Is the answer C? Thank you
*Tuesday, October 21, 2014 at 2:55pm*

**Math HELP!**

Rosa, Roberto, Andrea, and Inno find an estimate for square root 10. Who has proposed the best solution? A. Rosa: "Use square root 9 and square root 25 to estimate." B. Roberto: "I will use square root 4 and square root 9." C. Andrea: "It should be ...
*Tuesday, October 21, 2014 at 2:46pm*

**math**

write and solve inequality 17. the speed limit of a highway is 55 miles per hour. a car is traveling at least 65 miles per hour. how many miles per hour m over the speed limit is the car traveling? 55-m>equal to 65;m. eqaul to 10 m+65< equal to 55; m < equal to -10 65...
*Tuesday, October 21, 2014 at 1:41pm*

**math**

Given: 20,000 shares cumulative preferred stock ($2.25 dividend per share): 40,000 shares common stock. Dividends paid: 2013, $8,000; 2014, 0; and 2015, $160,000. How much will the preferred stockholders and the common stockholders receive each year?
*Tuesday, October 21, 2014 at 1:41pm*

**math Help ASAP**

write and solve inequality 17. the speed limit of a highway is 55 miles per hour. a car is traveling at least 65 miles per hour. how many miles per hour m over the speed limit is the car traveling? A 55-m>equal to 65;m. eqaul to 10 B m+65< equal to 55; m < equal to -...
*Tuesday, October 21, 2014 at 1:37pm*

**math**

labrina received a $50 gift card to an online store. she wants to purchase some bracelets that costs $8 each. there will be a $10 overnight shipping fee. how many bracelets can she buy? 4 bracelets 5 bracelets************ 6 bracelets 7 bracelets is that the correct answer??????
*Tuesday, October 21, 2014 at 1:34pm*

**Math**

((1/2)^-5)^2
*Tuesday, October 21, 2014 at 1:14pm*

**math**

Labrina received a $50 gift card to an online store. she wants to purchase some bracelets that costs $8 each. There will be a $10 overnight shipping fee. how many bracelets can she buy? A 4 bracelets B 5 bracelets******* C 6 bracelets D 7 bracelets is the second one correct ...
*Tuesday, October 21, 2014 at 1:05pm*

**math**

arianna's mom deposits $80 in her lunch account. Lunch costs $2.50 per day. Write and solve an inequality to determine when there will be less than $20 in her account. I'm not sure how to set this up. would i subtract $80 to add it back to $20 on the other side of the ...
*Tuesday, October 21, 2014 at 12:56pm*

**Math help**

Please answer this 1 question!! 1.Which could be the name of a point? A. EF B. k C. Q D. MN
*Tuesday, October 21, 2014 at 12:37pm*

**math**

what is one-half added to 2 sixths?
*Tuesday, October 21, 2014 at 12:34pm*

**Math**

I'm not sure how i'm supposed to set up the equation to solve this. A phone company offers a plan for long distance service charges of .08 per minute. Another phone company offers a plan for $6 per month plus .02 per minute. For what number of minutes per month are the...
*Tuesday, October 21, 2014 at 12:13pm*

**math**

What is the perimeter of a triangle with the given side lengths? s1 = x + 4 cm s2 = 3x + 1 cm s3 = 7x + 3 cm
*Tuesday, October 21, 2014 at 11:25am*

**math**

I labeled a clock, dice, and straight line A,B,C,D and with the chart below them it says to use those points to label and name representations of each of the following table: ray, line, line segment, and angle. Extend segments to show lines and rays. Need help because I'm ...
*Tuesday, October 21, 2014 at 8:47am*

**Math**

Pick 2 consecutive, positive integers and call them a and b. Prove that a/2 + b/2 >/= 1. what does it mean by consecutive and positive integers? and how you can prove it? Thank You..
*Tuesday, October 21, 2014 at 8:46am*

**Math**

What is 2 more than 5?and 1 less than 8 plus 2? I am in grade one. Thank you.
*Tuesday, October 21, 2014 at 8:27am*

**math**

find the difference between the simple intrest and the compound intreston 5000 for 2 years at 9% per annum.
*Tuesday, October 21, 2014 at 3:40am*

**math**

Select the appropriate values of x that are solutions to f (x)=0, where f ( x ) =-7x^2+4x+9 (-0.78,0.44) (-7,4) (-0.57,-1.29) (-0.88,1.46) Select the appropriate values of x that are solutions to f ( x ) =-5x^2+8x+5 (2.08,-0.48) (-5,8) (-1.60,-1.00) (-1.00,1.60)
*Tuesday, October 21, 2014 at 3:21am*

**math**

Select the appropriate values of x that are solutions to f (x)=0, where f ( x ) =-7x^2+4x+9
*Tuesday, October 21, 2014 at 2:49am*

**Math**

Suppose that water is pouring into a swimming pool in the shape of a right circular cylinder at a constant rate of 3 cubic feet per minute. If the pool has radius 6 feet and height 10 feet, what is the rate of change of the height of the water in the pool when the depth of the...
*Tuesday, October 21, 2014 at 12:44am*

**Math HELP!!!!!**

3/8x11 3/5x5/7 3/4x2 2/5x5/6 7/8x1/2
*Tuesday, October 21, 2014 at 12:34am*

**math**

Identify the solution(s) of the system of equations, if any. x + 2y = 7 3x - 6y = 3 (4, ) (4, ) (, 4) (, 4)
*Tuesday, October 21, 2014 at 12:04am*

**Math**

Which algebretic equation correct represents this sentence? 25 is three times a number decreased by 8. A. 25 = 3w - 8 ? B. 3 = 25w - 8 ? C. 3 = 25w + 8 ? D. 25 =3(w + 8) ? a little confused lol.. help? Thanks Everyone So Much
*Monday, October 20, 2014 at 11:23pm*

**math**

HELP HELP PLEASE The University of Townville gives a full scholarship to any student who scores in the top 4% of students on the SMRT standardized exam. SMRT scores have a mean of 260 and a standard deviation of 22. What score does a student need to attain in order to receive ...
*Monday, October 20, 2014 at 11:18pm*

**math**

Jordan is making a beaded necklace, 2/3 of the beads she uses are red and 4/21 of the beads are blue, she wants the rest to be white, what fraction of the beads should be white?
*Monday, October 20, 2014 at 10:40pm*

**Math**

A skier has decided that on each trip down a slope, she will do 2 more jumps than before. On her first trip she did 6 jumps. Derive the sigma notation that shows how many total jumps she attempts from her fourth trip down the hill through her twelfth trip. Then solve for how ...
*Monday, October 20, 2014 at 10:15pm*

**6TH GRADE MATH **

Use an example to describe the multiplicative relationship between two equivalent ratios. Can someone please help me?
*Monday, October 20, 2014 at 10:11pm*

**Math 11**

A roller coaster has a track that drops at an angle of depression of 25 degrees from a height of 14.9 m. When it reaches the ground in travels horizontally for 8 m. It then rises at an angle of elevation of 47 degrees to a height of 26.8 m A) What is the total horizontal ...
*Monday, October 20, 2014 at 10:06pm*

**Math 11**

An airplane is flying 100 km north and 185 km west of an airport. it is flying at a height of 7 km. A) what is the straight-line distace to the airport? B) what is the angle of elevation of the airplane, from the point of view of the airport?
*Monday, October 20, 2014 at 10:02pm*

**math 11**

An asymmetrical roof has measurements show in the diagram below. if the vertical supports are each two feet apart, calculate the measure of angle G and the slant heights (lengths x and y) of the roof.
*Monday, October 20, 2014 at 9:59pm*

**Math 11**

Chung-ho is standing on the top of a building that is 135 m talk. The angle of depression to the top of the building next door is 71 degrees. The angle of depression to the basebof the building is 77 degrees. The building are 31 m apart. How talk is the other building?
*Monday, October 20, 2014 at 9:50pm*

**Math HELP!!!!!**

give 2 examples of mixed numbers that when multiplied by 3/4 give a product between 3/4 and 1 PLEASE HELP ME AND QUICK I HAVE A LOT DUE TOMORROW!!!!!
*Monday, October 20, 2014 at 9:40pm*

**math**

the product of my digits is an even number the sum of my digits is < 100
*Monday, October 20, 2014 at 9:36pm*

**math**

if 1/2 times 3/4 is 3/8 why is it less than 3/4?
*Monday, October 20, 2014 at 9:31pm*

**math**

An estimate for √123 is. A.10 B.11 C.12 D.13 Is the answer B?
*Monday, October 20, 2014 at 9:02pm*

**math**

An estimate for -√66 is A.-6 B.-7 C.-8 D.-9 Is the answer D?
*Monday, October 20, 2014 at 8:53pm*

**math ratios**

use an example to describe the multiplicative relationship between two equivalent ratios.
*Monday, October 20, 2014 at 8:40pm*

**math**

An estimate for √3 is. A.1 B.1.2 C.1.7 D.2 Is the answer C.
*Monday, October 20, 2014 at 8:40pm*

**Math HELP!**

An estimate for -square root 66 is (blank) A. -6 B. -7 C. -8 D. -9 Is the answer C? Thank You
*Monday, October 20, 2014 at 8:38pm*

**math**

195 divided by 4 estimated
*Monday, October 20, 2014 at 8:37pm*

**math**

Estimate the value of √45 to the nearest integer. A.-7 B.6 C.-6 D.7 Is the answer D?
*Monday, October 20, 2014 at 8:36pm*

**Math**

Eight-ninths of a bunch of marbles remain on a table. The square root of half the total number of marbles have rolled away. Also, the two children who are playing with the marbles each hold one marble. Find the total number of marbles in the bunch.
*Monday, October 20, 2014 at 8:25pm*

**math**

A MAP HAS A SCALE OF 5 INCHES:11 MILES.IF TWO CITIES ARE 45 INCHES APART ON THE MAP,WHAT IS THE ACTUAL DISTANCE BETWEEN THE CITIES?
*Monday, October 20, 2014 at 8:18pm*

**math**

find the unit rate 45mi/h=____ft/sec
*Monday, October 20, 2014 at 8:04pm*

**Math HELP!**

Which two square roots are used to estimate square root 5? A. Square root 1 and square root 2. B. Square root 2 and square root 4. C. Square root 4 and square root 9. D. Square root 9 and square root 16. Is the answer B? Thanks
*Monday, October 20, 2014 at 7:57pm*

**math**

Ms.Franco has many pens.1/3 of her pens are blue.1/2 of her pens are black and the rest are all other colors.There were 5 more black pens than blue pens.How many pens were not black or blue?
*Monday, October 20, 2014 at 7:40pm*

**math**

The ratio of students Ms.Finn has to Mr.D is 7:4.Ms.finn has 15 more students than Mr.D.After sending some students to Mr.D,Ms.finn will have 5/6 as many students as Mr.Finn. a)How many students did Ms.Finn have in the beginning? b)How many students did Ms.Finn send to Mr.D?
*Monday, October 20, 2014 at 7:37pm*

**math**

Heather has $500 in her savings account. She withdraws $20 per week for gas. Write the equation heather can use to find out how many weeks it will take her to have a balance of $220
*Monday, October 20, 2014 at 7:29pm*

**Math**

Ms. Compra bought 5 markers for $4.75. At this price how much will 4 markers cost? I got .95 each. Is that correct?
*Monday, October 20, 2014 at 6:50pm*

**Math**

In a group of 22 boys, 13 play basketball and 15 play football. 3 of the boys play neither. how many play both ?
*Monday, October 20, 2014 at 6:41pm*

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