Friday
August 28, 2015

# Homework Help: Math

## Recent Math Questions

Math
x^-5 * x^7= x^5 can someone explain why and check if it is correct
Friday, August 28, 2015 by Jake

MATH
PROVE THAT sin3Asin6A+sinAsin2A/sin3Acos6A+sinAcos2​A
Friday, August 28, 2015 by VALENTINE

math
A town has a population of 2000 people at time t = 0. In each of the following cases, write a formula for the population, P, of the town as a function of year t. (a) The population increases by 60 people per year. I thought it would be P= 2000 (1.03)^t (b) The population ...
Friday, August 28, 2015 by Natalie

Math
Looking to find the missing digit for each statement true. The number 874_ is divisible by 4. Please help how to solve
Friday, August 28, 2015 by Cyle

Math
An airplane is flying at an airspeed of 500 km/hr in a wind blowing at 50 km/hr toward the southeast. In what direction should the plane head to end up going due east? (Round your answer to two decimal places.)What is the airplane's speed relative to the ground? (Round ...
Friday, August 28, 2015 by Kristen

Erin buys a bag of peanuts that weighs of 3/4 of a pound. Later that week, the bag is 2/3 full. How much does the bag of peanuts weigh now?
Thursday, August 27, 2015 by Aria

Math
Ronnie misses the school bus 1 out of every 30 school days. He sets up the proportion 1/30=180/x to predict how many days he will miss the bus in the 180-day school year. What is Ronnies error?
Thursday, August 27, 2015 by Brooke

math
lola is placing appetizers on plates. she has 63 spring rolls and 84 cheese cubes. she wants to include both appetizers on each plate. each plate must have the same numbers of spring rolls and cheese cubes. what is the greatest number of plates she can make using all of the ...
Thursday, August 27, 2015 by jason

Math
An airline know that,on average the probability that a passenger will not show up for a flight is 6%.If an airplane is fully booked and holds 300 passengers,how many seats are expected to be empty?If the airline overbooked the flight by 10 passengers,about how many passengers ...
Thursday, August 27, 2015 by Brooke

math
if about 32,680 kilobytes of memory is still available how many more pictures can they take
Thursday, August 27, 2015 by julie

Math
Consider the functions in the figure below. Find the coordinates of C in terms of b. So there are two functions. There is the y=x^2 u-shape and then a line in the middle of it with points (0,b) and (1,1) in that order from left to right. Farther to the left of point (0,b) is ...
Thursday, August 27, 2015 by Natalie

pre-calculus
h(t)=15t + 1200 is a function that models the motion of a mountain climber. h(t) is his height above sea level at time t in minutes. 1a) the coefficient on t is 15. what does it tell you about the motion of the mountain climber? 1b) what does it tell you about the graph of h(t...
Thursday, August 27, 2015 by d

Math
A pilot flew to Montreal and back . The average speed going was 320 mph , and the average speed returning was 480 mph. Find the distance to Montreal if the total flying time was 5 hours.
Thursday, August 27, 2015 by norde

Math
On average it takes Miguel 45 minutes to compete his math assignments and 30 minutes to complete his science assignments. If he had 24 math assignments this grading period , what was his total minutes spent on math ?
Thursday, August 27, 2015 by AnnaChavez

Math
In the question: a rational number plus an irrational number will be ____ a. irrational b real c. rational d. A and B I know it is irrational but would it also be real since irrational numbers are real? Thanks....
Thursday, August 27, 2015 by Brandi

Math
What is the probability of rolling two dice and getting 3 and a 6? and could you explain how you would get the answer?
Thursday, August 27, 2015 by Taylor

math
For tax purposes, you may have to report the value of your assets, such as cars or refrigerators. The value you report drops with time. "Straight-line depreciation" assumes that the value is a linear function of time. If a $1020 refrigerator depreciates completely in... Thursday, August 27, 2015 by Natalie Math If there was 66% off the whole store and you wanted to by a couch and a dinning room table made of glass Couch:600 Room table glass:7,000 How much would you pay Thursday, August 27, 2015 by Nashly Math What is the cube of 8? A. 512 B. 24 C. 64 D. 2 C? Thursday, August 27, 2015 by Brooklyn Math A recipe for punch calls for 4 cups on lemonade for every 6 quarts of fruit juice. How many quarts of fruit juice should elly use if she has already added 10 cups of lemonade Thursday, August 27, 2015 by George 4th grade math Tell how u could use a number line to determine which of two number is greater Thursday, August 27, 2015 by booda math the garden has fencing around the perimeter and has a partition down the center. The length of the garden is 30 ft and the entire length of fencing used is 37 yards. How long is the partition in feet? Thursday, August 27, 2015 by Anonymous Math During a track meet Kelly throws the shotput 51 feet, 50 feet,and 58 feet. Write an expression that represents the length of her average throw in feet. Evaluate the expression. Thursday, August 27, 2015 by Valerie math Part A: Solve the inequality for x and explain if the solution is reasonable or not. Part B: Explain how each piece of the inequality corresponds with the situation. If the inequality is incorrect, explain why that/those part(s) of the inequality is/are incorrect. Thursday, August 27, 2015 by alonzo math a box has a surface area of 184 sq in give the dimensions it could have for its length width and height hint find three areas that add up to 92 square inches Thursday, August 27, 2015 by Broham math Chicken was on sale for$7.95 per pound. Laurie bought small package that weighed 0.8 pound. How much did Laurie pay for the chicken?
Thursday, August 27, 2015 by sarah

MATH
MY MATH PROBLEM SAID FOR ME TO CHANGE 3/4 INTO A DECIMAL. MY ANSWER IS 0.336 AM i CORRECT.
Thursday, August 27, 2015 by Barny

Math
a lottery game has balls numbered 1 through 19. What is the probability of selecting an even numbered ball or a 4? Its hard one please anyone know how solve?
Thursday, August 27, 2015 by jacqueline

math
at a track meet with 135 participants, 25 participate in jumping event, 1/5 of these jumpers are female, and 1/3 of the the total participants are female. What is the probability that a participant chosen at random is a jumper, given that the person is a female? Please help?
Thursday, August 27, 2015 by jacqueline

math
3 3/4 as a decimal is 0.366. Am I correct.
Thursday, August 27, 2015 by tete

math
6/3 as a decimal is 0.622. am i correct
Thursday, August 27, 2015 by SELAH

MATH
iS 1/4 as a decimal 0.4. am I correct.
Thursday, August 27, 2015 by SELAH

math
the square root of 144 is 12 am im correct
Thursday, August 27, 2015 by crankman

Math
Mr. Kole has 30 students in his class. He has twice as many girls as boys. What is the ratio of boys to total students? 1:3 1:2 2:3 2:1
Thursday, August 27, 2015 by *Kayla *

Math
My math question is to write 5.6 in simplest form. My answer is 5 2/5 am I correct. Thanks
Thursday, August 27, 2015 by Tamara

Math
My math question is, write 0.67 in simplest form. My answer is 20/40 am I correct.
Thursday, August 27, 2015 by tamara

Math 10
EXPONENTIAL EQUATION Find the X 3^x - 82/9 = -3^-x
Thursday, August 27, 2015 by Julie

math
If (2 1/2)^4y =1/8 then y = A. -4 B. -1/8 C. 7/8 D. 3/2 E. 21/16
Thursday, August 27, 2015 by anonymous

Math
17Min and 38mind explain the mental math
Thursday, August 27, 2015 by Destiny

math
Find the domain and range for y=x^2+9. Is the answer all real numbers? How would you enter that in interval notation? From Googling the definition of real numbers, I now understand that the infinity sign would not be included. For a continuous function you use closed brackets...
Thursday, August 27, 2015 by Natalie

Math (functions)
For tax purposes, you may have to report the value of your assets, such as cars or refrigerators. The value you report drops with time. "Straight-line depreciation" assumes that the value is a linear function of time. If a $1020 refrigerator depreciates completely in... Wednesday, August 26, 2015 by Natalie Math Find the domain and range for y=x^2+9. Wouldn't the domain and range just be all real numbers since nothing else is really given in the equation? How would you enter "all real numbers" in interval notation? Would it include the infinity sign? Wednesday, August 26, 2015 by Lillian Algebra Need help to an math problem. James have 15 cases, with 15 boxes per case, and 15 brands per box. Write an exponential expression using a base of 15 to show how many total brands there are in a stack of cases. How would I write that? Wednesday, August 26, 2015 by Anonymous Math Explain whether a function that has a slope of 0 can have the attribute of symmetry. . My answer is yes, because even though there is no slope you still have a possibility of it being symmetrical to the y axis depending on the domain. Am I correct Wednesday, August 26, 2015 by Karen Math The food that the average American consumes in a day provides 2.0 X 10^3 kcal of energy. How many calories a sec is this? *how to set up work in dimensional analysis*? & *what is "k" in kcal stand for*? Wednesday, August 26, 2015 by Karen Math Diamonds are measured in units called a carat. One carat equals 200mg. If a diamond is 0.600 carat, what is the mass of the diamond in ounces? * 1kg=2.205 pounds* *1pound= 16 ounces* . . How do I get to the answer showing work/setting it up? Wednesday, August 26, 2015 by Karen Math You have been given a recipe for a completely new fruit drink. The recipe has three parts. Here is the recipe: Fruit drink recipe: 2 parts pineapple juice, 3 parts cranberry juice; 5 parts lemon juice The mixers need to make 1 quart (4 cups) of juice for the taste test. How ... Wednesday, August 26, 2015 by Mario Math at a track meet with 135 participants, 25 participate in jumping event, 1/5 of these jumpers are female, and 1/3 of the the total participants are female. What is the probability that a participant chosen at random is a jumper, given that the person is a female? Please help? Wednesday, August 26, 2015 by jackie math During a department store sale 30 shoppers bought only clothing. 5 shoppers bought only towels, and 15 shoppers thought both clothing and towels. If 100 people shopped that day and a shopper is chosen at random, what is the probability that the shopper has bought towels? Wednesday, August 26, 2015 by jackie math There are a total of 36 bikes.If the ratio of green bikes to blue bikes is 4 to 5,how many of the bikes are blue? Wednesday, August 26, 2015 by ignacio Math An artist wants to frame a square painting with an area of 400 square inches. She wants to know the length of the wood trim that is needed to go around the painting. a. If x is the length of one side of the painting, what equation can you set up to find the length of a side? ... Wednesday, August 26, 2015 by I Need Help :/ Math Which expression are equivalent to -3.5(2-3n)-2.5n Wednesday, August 26, 2015 by Dontrell Math What is .45 with bar notation over the 45 rounded to? Wednesday, August 26, 2015 by Potato math OK thank you so much I appreciate it Wednesday, August 26, 2015 by tomeisha math junita is making necklace to give present.she plans to put15 beads in each necklace . Beads are sold in packages of 20.what is the least number of packages she can buy to make necklaces and have no beads left over? Wednesday, August 26, 2015 by Ash iq fundamentals math a box contains the following mixture of colored marbles 2 black, 3 red, 5 yellow, and 2 green. If two marbles are drawn, the second being drawn n after the first is replaced, then what is the probability that both are black? Wednesday, August 26, 2015 by jackie Math a box contains the following mixture of colored marbles 2 black, 3 red, 5 yellow, and 2 green. If two marbles are drawn, the second being drawn n after the first is replaced, then w what is the probability that both are black? Wednesday, August 26, 2015 by jackie math How did you find the answer for number of goldfish and number of koi Wednesday, August 26, 2015 by tomeisha math write each expression using n as your variable.then simplify fully. 1.five more than the sum of a number and ten. 2.the product of eight and seven less than a number. 3.the quotient of a number and three, increased by one. 4.ten less than the product of six and eight less than... Wednesday, August 26, 2015 by bre Math Deshawn and Luke had an equal number of stickers. After Deshawn used 26 stickers and Luke lost 38 stickers,Deshawn had twice as many stickers as Luke. How many stickers did each of them have? Wednesday, August 26, 2015 by Alyssa math Tony would like yo build a circular pond with depth of 1.5 feet in her backyard. She is considering how many fish a pond will hold. The home and garden store recommends 1 goldfish for every 3 square feet of surface area or 1koi for every 10 square feet of surface area. ... Wednesday, August 26, 2015 by tomeisha math two marbles are drawn without replacement from a box with 3 white,2 green, 2 red, and 1 blue marble. Find the probability. Both are white marbles. Wednesday, August 26, 2015 by jackie math In electric circuit theory, the phase angle of "true and real" power is expressed in terms of what function in reference to the apparent power? Wednesday, August 26, 2015 by reece math Bob must save a total of 180 dollars for a new bike. So far he saved four fifths of the amount. How much money has Bob saved for his bike Wednesday, August 26, 2015 by kenney math the imaginary i or j which is ewuivalent to square root of -1 has a phase difference of ____ with real number 1. what's the answer? 0,45,90,180, or 360? and why? Wednesday, August 26, 2015 by reece math What symbol is needed between -2 and [-3] to make a true statement> Wednesday, August 26, 2015 by lost math Describe how to order 7,463, 74,633, 74,366 from least to greatest Wednesday, August 26, 2015 by mom math A construction expected a new project from start to finish to take 12 weeks. The crew will work 7 days a week. In how many days will the project be complete. Explain how you could check your answer to be sure it's correct. Wednesday, August 26, 2015 by tomeisha math i am a 6-digit number greater than 700,000.my hundred thousands digit is twice my ones digit,my thousands digit,and my hundreds digit.my remaining digits are the same-a prime number greater than 5 Wednesday, August 26, 2015 by josh math A train traveled 325 mile. You want to know how long it took the train to travel that distance. What question would you need to have answered in order to calculate the answer to this problem. Wednesday, August 26, 2015 by tomeisha math henrietta deposits$3500 to start a new bank account. it earns a simple interest rate of 6.5% per year. henrietta makes no more to deposits to the account. how much interest will henrietta have earned after three years?
Wednesday, August 26, 2015 by tomeisha

Math
Evaluate 1/2 x 1/2 And write as an exponent 1/2 x 1/2
Wednesday, August 26, 2015 by Amy

math
one digit from the number 9,848,778 is written on each of seven cards. What is the probality of drawing a card that shows s 9, 8, or 4?
Wednesday, August 26, 2015 by jacqueline

math
2/5-2/15+3/10
Wednesday, August 26, 2015 by Jordan

Math
Pail has just enough money to buy 5 erasers and 30 pencils or 10 erasers and 24 pencil. Each eraser costs 30 cents. How much does each pencil cost?
Wednesday, August 26, 2015 by Austin

math
If a and b are two natural numbers such that (a)^b =36 , then find the value of (b)^a-2.
Wednesday, August 26, 2015 by satyajit

Math
a rectangular piece of cardboard is twice as long as it is wide . from each of its for corners, a square piece 3 inches on a side cut out. the flaps at each corner are then turned up to form an open box. if the volume of the box is 168 cubic inches, what were the original ...
Wednesday, August 26, 2015 by Anonymous

math
simplify 4 root of 500 over 4 root of 5 show work
Wednesday, August 26, 2015 by karina

math
Perform the indicated operation. Simplify the result, if possible. 11 - \frac{5}{4x-5} would you multiply the denominator to both sides and get the answer?
Wednesday, August 26, 2015 by Lillian

Math Functions
Find the inverse function of f(x)=5 + \sqrt[3]{x}. so f^-1(x) equals...? I'm not sure how to approach this problem.
Wednesday, August 26, 2015 by Sarah

Math
Find all y such that the distance between the points (4, 3) and (8, y) is 11.
Wednesday, August 26, 2015 by Isabelle

Math Equations
Find all real solutions of equation 3 + 4 z+ z^2.
Wednesday, August 26, 2015 by Melaina

math
An angle of 60 radians can be converted to BLANK an angle of degrees. (Give an exact answer as a fraction, not a decimal approximation.)
Wednesday, August 26, 2015 by Stacy

Math
The third, fifth and seventeenth terms of an arithmetic progression are in geometric progression. Find the common ratio of the geometric progression.
Wednesday, August 26, 2015 by Gustav

Math
X2=144
Wednesday, August 26, 2015 by Tamara

Math
A blueprints scale of 1 cm=5m. what are the dimensions of a function room that measures 9cm by 7cm on the blueprint?
Wednesday, August 26, 2015 by mary

Math
A quality control sample taken on a certain day revealed that for every 2000 units of a particular product manufactured,30 units were defective ?
Wednesday, August 26, 2015 by Mj

Math
A blueprint 8 centimeters wide and 14 centimeters high is to be enlarge.if the height of the enlargement will be 30 centimeters, how wide will it be?
Wednesday, August 26, 2015 by Mj

Math
A building casts a shadow of 8.5 meters when a man, 1.68 meters tall, casts a shadow of 1.1 meters.Find the height of the building.
Wednesday, August 26, 2015 by mary jean lumagot

Math
A tree casts a shadow of 12 meters when a 5meter post nearby casts a shadow of 6 meters find the height of the tree.
Wednesday, August 26, 2015 by mary jean

Math-Trigonometry
The angles of elevation to the top of a mountain are measured from beacons A(22°) and B(40°) at sea. If the beacons are 125m apart, how high is the mountain?
Wednesday, August 26, 2015 by Lucifer Mato

MATH
Simplify x^3x^4y^0 __________ x^0
Wednesday, August 26, 2015 by Camz

MATH
Evaluate: x^5y^8 ______ if x=2, y=2 and z= 1. z^5 ^its in fraction form Thank you so much for those who answer :))
Wednesday, August 26, 2015 by Camz

math
To what number does 153 rounded to the nearest hundred? Use the number line to explain why.
Tuesday, August 25, 2015 by nilar

Math
The greatest place value is hundred thousand. The digit in the tens place is 5.the remaining digit ate 2, 3, 8 and 7. One of the digit has a value of 30,000. One of the digit had a value of 800. The value of the digit in the thousands place is 10 times greater than this. There...
Tuesday, August 25, 2015 by mary

math
simplify: 5-(-3)^2 -6
Tuesday, August 25, 2015 by Brian

Does 5-(-3)^2 -6 equal 5-(-9)-6 equal 5+9-6 equal 14-6 =8 ?????? Thanks!
Tuesday, August 25, 2015 by Bryan

math
what are the three smallest 7 digit whole numbers that can be made using only the digits 4,3,0,9,2,8,and 5? Each digit must be used exactly one time in each number.
Tuesday, August 25, 2015 by Felix

math
In January 2009, the state of Nevada was facing a budget deficit of \$1.5 billion. The population of the state was approximately 2 million. How much would each person in the state have to contribute to pay this deficit? please send me the answer to savarywg@go.wpcc.edu
Tuesday, August 25, 2015 by billy savary

math
order of operations; simplify 4.5-10-2(1-2)+5 thank you!
Tuesday, August 25, 2015 by martha

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