Saturday
July 2, 2016

Homework Help: Math

Branches of Math

Recent Math Questions

math
1. (2x)(10x) a. 20x b.12x c.20x^2 d.5x** 2. -3m(m+8) a. -3m^2+24 b. -3m^2-24m c. -24m^2** d. -4m+5 3. 4d(2d-9) a.8d-36d** b.-d c.-28d^2 d. 8d^2-36d 4. find the product 5b(6b-10) a. 11b-10 b. 5b^2+6b-10** c. -b-10 d. 30b^2-50b
Friday, May 20, 2016 by please help

Math
Carol is going to make a wooden pyramid and then paint it. She drew the net of a square pyramid as shown below to help her plan the project. What should be the total surface area in square feet of Carol's wooden pyramid? Here is The Picture --> imgur(.)com(/)gRHtUQs ...
Friday, May 20, 2016 by Anonymous

math
The distance between two cities on a map is 4 inches. The actual distance between the two cities is 24 miles. What is the scale used on the map? If the scale on a different map of the same area is inch = 1 mile, how many inches separate the same two cities?
Friday, May 20, 2016 by tatum

Math
4000+20500+100000+200
Friday, May 20, 2016 by SAMIRA

Math/ Ratios
Abby and Hakeem had the same number of CDs. After Abby gave away 23 Cds and Hakeem sold 7 Cds the ratio became 3:4. How many CDs did they all have together? I can't figure out because ratios have never been something I was good at...
Friday, May 20, 2016 by Catania

math
a jewelry company makes charms in a 2 x 2 x 3 inch box. They ship the charms in a 3 x 4 x 5 inch box. how many of the smaller boxes can fit into the larger box to ship the charms? the first is 2 x 2 x 2 = 12 the second is 3 x 4 x 5 = 60. However, the answer is not 5. Thanks ...
Friday, May 20, 2016 by Sophia

math
The perimeter of a right triangle is 24 inch. Find the dimensions of the triangle if the sides are all whole number lengths. My answer: 6, 8, 10 do I have to put a unit like inch or feet?
Friday, May 20, 2016 by Please check my answer ASAP PLEASE!!

Math Help!
Use Euler's Formula to find the missing number. Vertices: 13 Edges: 26 Faces: ? A. 14 B. 15****? C. 16 D. 17 What is the maximum volume of a square pyramid that can fit inside a cube with a side length of 24 cm? A. 2,304 cm3 B. 4,608 cm3 C. 6,912 cm3****? D. 13,824 cm3 ...
Friday, May 20, 2016 by Lilyy2

math
If I walk 7 times around a football field how many miles did I walk ?
Friday, May 20, 2016 by june

math
A car travels 60 km in 1 hr 30 min.How long will it take to cover a distance of 100 km at the same speed.
Friday, May 20, 2016 by sayantika

math
A rectangular prism has length x+2, width x+1, height 4, and volume 24. find the length and the width?
Friday, May 20, 2016 by Anonymous

Math/dilution
A powder concentrate contains 2% w/w of active ingredient. What would be the percentage concentration (w/v) of the resultant solution after a 5-g packet of powder is dissolved in enough water to make 1 quart of solution?
Friday, May 20, 2016 by Anonymous

Math
OK I don't know where to start 4 (2/4) × 4
Friday, May 20, 2016 by Jessica

Math
#1) 8/10 +1/3 = 34/30= 1 (4/30) Is my answer OK #2) 2/5 ÷1/3= 6/5 = 1 (1/5) Is my answer OK #3) 2/5 ÷ 1/3 =6/5= 1 (1/5) Is my answer correct
Friday, May 20, 2016 by Jessica

Math
#1) which digit is 10 times the value in the underline digit in 36,119,432 (#that is underline is number 1 between the 1 and 9 ) I think the answer is one hundred thousand #2) which digit is 1/1000 of the value in the underline digit in 19,832,456 (# underline is 3) My answer ...
Friday, May 20, 2016 by Jessica

Math
#1) Luis stated that when you are converting meters to centimeters your answer will be larger than your original number. My answer is yes because centimeters are smaller . (Is my answer OK ) #2) 8/9 + 1/3= 33/27= 1(12/27)= (I'm stuck here) #3) 6/8-2/6=2 (18/20) =2 (9/10) ...
Friday, May 20, 2016 by Jessica

math
If x^2+1\x^2=47, the value of x+1\x is
Friday, May 20, 2016 by kishan singh rathour

MAth
Solve 0.9x-3.6=3 for x, round to two decimal places
Friday, May 20, 2016 by Anonymous

math
You just paid $42.40 including tax, for your cousin's birthday present. Sales tax is 6%. What is the retail price of the gift? my answer: $40 is the retail price
Thursday, May 19, 2016 by Please check my answer

math
Rueben drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took 7 hours. When Rueben drove home, there was no traffic and the trip only took 5 hours. If his average rate was 18 miles per hour faster on the trip home, how far away does ...
Thursday, May 19, 2016 by a

math
i'm supposed to find an area of a figure but i'm not sure what it is so therefore i don't know the formula. basically, it kind of looks like a capsule but more roundish like an oval. there's two lines down the middle that both measure at 18 ft. the bottom on ...
Thursday, May 19, 2016 by ty

math
what is the answer to finding the GCF of m^8n^4 and 3m^6n=
Thursday, May 19, 2016 by johnny green

Math Trigonometry
A plane flies in a direction of 85° from Chicago. It then turns and flies in the direction of 200° for 150 miles. It is then 195 miles from its starting point. How far did the plane fly in the direction of 85°? I am confused about aereal navigation. Can someone ...
Thursday, May 19, 2016 by Danny

math
A triangle has side lengths of 6 inches 6 inches Any length less than 12 inches. How many triangles are possible? I think only one triangle is possible, one where all sides measure 6 inches
Thursday, May 19, 2016 by Louisiana

math
A scale drawing of an American flag is 10 inches long and 6 inches tall. The actual flag is 3 feet tall. a. True or False, the scale of the drawing is 2 in. : 1 ft. b. What is the perimeter of the american flag in the scale drawing? c. What is the area of the american flag in ...
Thursday, May 19, 2016 by karina

math
There is a diagram of a running track. The track is made up of two straights and two semicircles. The radius of each semicircle is 35 meters. The length of the outer perimeter of the entire running track is 400 meters. Find the length of one of the straight sections of the ...
Thursday, May 19, 2016 by Melanie

Math
You use a line of best fit for a set of data to make a prediction about an unknown value. The correlation coefficient for your data set is 0.109. How confident can you be that your predicted value will be reasonably close to the actual value? A)I can’t be confident at all...
Thursday, May 19, 2016 by Scarlet

Math
Miguel wants to put a fountain in the center of the park.the fountain will be in a retangular shaped pool. The length of the pool is 25 feet. The width of tge pool will be 14 feet. What is the area and perimeter of the pool I know length tines width is area but do u use all 4 ...
Thursday, May 19, 2016 by Ashley martin

Math
Find the solution to each equation. 2^x=17 4log4^(x)=7
Thursday, May 19, 2016 by Nicole

MATH HELP !!!!!
I know a fraction is the answer but can't make it work for the probability question asking for what is the chance you will pull a pink eraser out of a,container that has 5 green .2 striped.4 pink.and 3 white.?
Thursday, May 19, 2016 by james

math
Kisha has five different marbles. How many different ways can she place the marbles into two bags so that at least one marble is in each bag?
Thursday, May 19, 2016 by Anonymous

math
A kite and its tail total 36 ft in length. The tail is five times the length of the body. How long is the kite's tail?
Thursday, May 19, 2016 by Anonymous

math
A triangle has side lengths of 7 cm, 1 cm, 9 cm. How many triangles are possible?
Thursday, May 19, 2016 by Louisiana

math
A room has a floor area of 1025 ft^2 and a 10 ft high ceiling. Occupancy guidelines recommend at least 200 ft^3 per person. What is the maximum number of people allowed in the room?
Thursday, May 19, 2016 by Anonymous

math
What kind of triangle is (0,0) (4,O) (0,4)
Thursday, May 19, 2016 by melissa

math
A triangle has side lengths of 3 ft., 5 ft., 4 ft. How many triangles are possible?
Thursday, May 19, 2016 by Louisiana

math
A picture is copied onto a sheet of paper 8 inches by 10 inches. A 1 inch margin is left all around the picture. Find the length, width, and area of the picture. the length is 10 and the width is 8 but i don't understand how the 1 inch margin comes into play? is the area ...
Thursday, May 19, 2016 by Cali

math . someone please explain
(-3x^-4y^-2)^-1 / (x^4y^4z^4) ^-4
Thursday, May 19, 2016 by Duran

Math
Why did congress agree to let both territories become states
Thursday, May 19, 2016 by Malachi

Math
Sally has a recipe that needs 1 1/2 tsp. of butter for every3 cups of milk. If Sally increases the amount of milk to 13 1/2 cups of milk, how many tsp. of butter are needed?
Thursday, May 19, 2016 by Selena

Math
Sanjay takes a pre-ap multiple choice test of 25 questions in which he earns 10 points for every correct answer, but loses 2 points for every incorrect answer. Sanjay answered all 25 questions and scored 202 points. How many did he answer correctly? how many did he answer ...
Thursday, May 19, 2016 by Tami

Math Trignometry
. From the top of the 800-foot-tall Cartalk Tower, Tom sees a plane; the angle of elevation is 67°. At the same instant, Ray, who is on the ground 1 mile from the building, notes that his angle of elevation to the plane is 81° and that his angle of elevation to the top...
Thursday, May 19, 2016 by Mandy

Math- any help would be greatly appreciated
In triangle ABC, the medians AD,BE, and CF concur at the centroid G. (a) Prove that AD < (AB + AC)/2. (b) Let P=AB+AC+BC be the perimeter of triangle ABC. Prove that 3P/4 < AD + BE + CF < P.
Thursday, May 19, 2016 by Stephanie

Math
A circular window has a diameter of 25 inches. It's approximation is 22/7
Thursday, May 19, 2016 by Cindy

math
what are the next three terms in the sequence? -1,9,19,29, ...
Thursday, May 19, 2016 by hiu

Math (check my work)
Angle A measures (x + 13) °. Angle B is complementary to angle A and measures (2x +23) °. a. Write and solve an equation to find the value of x. Not sure how to write the equation but the value of x = 18 b. What are the measures of angle a and angle b? angle a = 31°...
Thursday, May 19, 2016 by Isabelle

Math
If the theta lies in quadrant 2 and sin theta equals 1/5, find sec theta
Thursday, May 19, 2016 by Bob hill

Math i dont understand
1. The table shows the results of spinning a four-colored spinner 50 times. Find the experimental probability and express it as a decimal. P(not red) = ? (1 point) a 0.6 b 0.4 c 0.2 d 0.3 2. You roll a number cube 20 times. The number 4 is rolled 8 times. What is the ...
Thursday, May 19, 2016 by Alexia Marsel

MATH PLZ HELP
7. Which of the following is an example of independent events? A rolling two number cubes B selecting marbles from a bag without replacement after each draw C choosing and eating a piece of candy from a dish and then choosing another piece of candy*** D Pulling a card from a ...
Thursday, May 19, 2016 by MS.SUE,DAMON,REED ANYONE

Math
In triangle ABC, the medians AD,BE, and CF concur at the centroid G. (a) Prove that AD < (AB + AC)/2. (b) Let P=AB+AC+BC be the perimeter of triangle ABC. Prove that 3P/4 < AD + BE + CF < P.
Thursday, May 19, 2016 by Stephanie

math
How many decimal digits in 2.00? 2 or 0?
Thursday, May 19, 2016 by Martha

math
at a grocery store a 12 pack of 10.75 ounce cans of soups is sold for $15.65. there are 128 ounces i10.75x12=n a gallon. round to nearest cent. f.$0.64,$9.47,h.$9.52,j.$15.53 10.75x12=129 $15.53?
Thursday, May 19, 2016 by marilyn

Math
If log 20=P, express log 16 in terms of P. I actually don't want an answer. Is there possibly a hint I can get about an approach to the question? I thought it might have to do something with the common factors of 16 and 20, but I'm not sure.
Thursday, May 19, 2016 by Alisha

math
Mario rolled a number cube labeled 1-6 sixty times. In what percent of the rolls did Mario roll a number less than 4?a.5%,b.33%,c.50%,d.55% # #of x rolled 1 16 2 12 33/60 x/100 3 5 3300/60=55? 4 8 5 12 6 7
Thursday, May 19, 2016 by marilyn

math
state if the following are examples of constants or variable The number of days in month of may
Thursday, May 19, 2016 by SanaMpho

Math
Given a fixed positive integer k > 1, find all integer solutions to the equation y^k = x^2 + x. (x^y means x to the power of y)
Thursday, May 19, 2016 by Swag

math !
1)You roll a 6-sided number cube twice. Find P(3, then even). Write the probability as a fraction in simplest form. 2)Sasha visits the ice cream parlor and asks the server to randomly choose her bowl color, ice cream flavor, and topping for her. Use the chart above to ...
Thursday, May 19, 2016 by Q&J Wiiffeyy

Math -rational exponents
root(3,12m^2) Trying to figure out how to rewrite as an expression with a fractional exponent.Thank you for your help
Thursday, May 19, 2016 by Carissa

math
Suppose you have a wallet with $5 bills, $10 bills, and $20 bills. If the probability of picking a $20 bill is 4/15, and the probability of piciing a $5 bill is 1/3, what is the probability of picking a $20 bill? a. 1/15 b. 1/5 c. 4/15 d. 2/5 **
Thursday, May 19, 2016 by Elizabeth

math
Below are the results of tossing a number cube 9 times. Find the experimental probability of tossing an odd number. 4,3,6,6,2,5,3,5,1. a. 4/9 b. 1/2 c. 5/9 d. 2/3 ** am i correct?
Thursday, May 19, 2016 by help

Math
A flag pole and a building stand on the same horizontal level from a point P at the bottom of the building the angle of elevation of the top T of the flag pole is 68 degree.From the top Q of the building the angle of elevation of the point T is 28 degree.If the building is 20m...
Thursday, May 19, 2016 by Glory

math
the wolves basketball team has a win to loss ratio of 6 to 1. so fare this seasn, the wolves have won 12 games. if ht e wolves ein 18 more gamees during the season how many games would you expect them to lose dureing the entire season? 18 + 12=30 30/6=5
Thursday, May 19, 2016 by marilyn

math
joe cut three acres of grass at the smith farm which is 15% of the property. how many acres are on the smith farm? f. 15 acres, g. 20 acres, h. 30 acres, j. 45 acres 15x3 45 acres?
Thursday, May 19, 2016 by marilyn

math
Suppose you have a wallet with $5 bills, $10 bills, and $20 bills. If the probability of picking a $20 bill is 4/15, and the probability of piciing a $5 bill is 1/3, ehat is the probability of picking a $20 bill? a. 1/15 b. 1/5 c. 4/15 d. 2/5 **
Thursday, May 19, 2016 by help

math
The diameter of a hydrogen atom is about 5×10^-11 meter. Suppose 8.4×10^8 hydrogen atoms were arranged side by side in a straight line. Multiply these numbers to find the length of this line of atoms. What is the length in scientific notation? 42×10^−3 ...
Thursday, May 19, 2016 by Claire

math
The volume of Jupiter is about 1.43*10^15 cubic kilometers. The volume of Earth is about 1.09*10^12 cubic kilometers. The number of Earths that can fit inside Jupiter can be found by dividing Jupiter's volume by Earth's volume. Find this quotient and express the answer...
Thursday, May 19, 2016 by Claire

Math
how many electrones of each element are produced in this reaction? PbS +H2O -----PbSO4+H2O
Thursday, May 19, 2016 by Michelle

MATH
The FritzHugh-Nagomo equation occurs in many apps such as biology, genetics and heat transfer. In the 1-D case, it can be written as du/dt = d^2/dx^2 + u(u-1)(λ-u) where λ is constant. Show that this eqn supports a travelling wave u(x,t) =(Ae^n1 + λBe^n2)/(Ae^n1...
Thursday, May 19, 2016 by Mr Maverick

math
Use the TVM Solver to calculate the amount you should make in monthly payments into an investment account if you want to have $1,000,000 in 60 years. The account pays 3.9% interest compunded monthly and you will make an intial investment of $25,000
Thursday, May 19, 2016 by sam

Math
I'm having trouble putting these least to greatest 6 and 9/10 , 6 and 19/80 , 6 and 3/4
Thursday, May 19, 2016 by Luna

Math
At small town high there are 100 students,each of whom takes atleast one of Biology,Chemistry,or physics.There are 50 student in Biology,60 in chemistry,and 70 in Physics.If 24 students are enrolled in exactly two of the classes,how many students are in all three?
Thursday, May 19, 2016 by Luiz

Math
In a school of 100 students,70 studied English,30 studied French and 50 studied Latin.everyone studied atleast one of the subject,and 44 studied exactly two of the subject.how many students studied all the subject.
Thursday, May 19, 2016 by Luiz

math !
1)Jane Gutierrez earns $8 an hour selling ice cream. If she earns $48 (d) working 6 hours (h), what is the independent variable? What is the dependent variable? Explain your answers. 2)Abigail Nyu went to the mall with $60; she wants to purchase several American Eagle gift ...
Thursday, May 19, 2016 by Q&J Wiiffeyy

math
A truck has traveled 75 miles in 1.5 hours of driving. At the same speed, which proportion can be used to determine how long T (in hours) it would take the truck to travel 325 miles? Can someone please help walk me through this? I don't understand, but if I ask my teacher ...
Thursday, May 19, 2016 by bean

Math
Find the limit if it exists. lim 1/(x-2) = infinity x→2+ lim 1/(x-2) = negative infinity x→2- lim 1/(x-2) = Does not exist x→2 lim (3x+2) = infinity x→∞ lim 999/(x^3) = 0 x→-∞ Can someone check to make sure that I am correct?
Thursday, May 19, 2016 by David

Math
a sum of money is divided among,bill,carl in the ratio 2:3:5.if carl receives $27 more than bill,how much does bill receives
Thursday, May 19, 2016 by Tahseeen

Math
Find the limit if it exists. lim 1/(x-2) x→2+ lim 1/(x-2) x→2- lim 1/(x-2) x→2 lim (3x+2) x→∞ lim 999/(x^3) x→-∞
Thursday, May 19, 2016 by David

Math Help- Areas!!!!
For problems 4-5, find the surface area of the cylinder in terms of pi. (cylinder is 18 cm high and 14 cm wide) A. 350 pi cm2 B. 896 pi cm2 C. 602 cm2 D. 644 pi cm2***? (cylinder is 20 inches high and 18 inches wide) A. 396 pi in2 B. 522 pi in2 C. 360 pi in2****? D. 1008 pi ...
Thursday, May 19, 2016 by Annie

Math
Find the limit if it exists. lim 1/(x-2) x→2+ lim 1/(x-2) x→2- lim 1/(x-2) x→2 lim (3x+2) x→∞ lim 999/(x^3) x→-∞
Thursday, May 19, 2016 by David

Math
Ellie has 200 dollars in her wallet at 10:00 AM when she goes to the mall. Afterwards, at 4 PM she has only 5 dollars left. Is it possible that Ellie had exactly 100 dollars at one point? Explain. My guess to this question would be yes and I would use the Intermediate Value ...
Thursday, May 19, 2016 by David

Math
f(x) = 2x^2 x<2 4x x≥2 1. Find the slope of the tangent curve of 2x^2 at x=2. a. -1/2 b. 1/2 c. 4 d. 8 e. Does not exist 2. Find the slope of the tangent curve of 4x at x=2. a. -1/2 b. 1/2 c. 4 d. 8 e. Does not exist 3. Find the slope of the tangent curve of f(x) at x...
Thursday, May 19, 2016 by David

math
the probability of obtaining a five when a fair die is tossed once is?
Thursday, May 19, 2016 by obiagwu

math
a spinner is numbered from 1-9 with each number equally likely to occur. what is the probability of obtaining a number less than 5 or greater than 6 with a single spin
Thursday, May 19, 2016 by kamie

Math
If you made the largest possible filled in square with 800 square tiles, how many extra tiles would you have?
Thursday, May 19, 2016 by Raya

MATH
You just paid $42.40 including tax, for your cousin's birthday present. Sales tax is 6%. What is the retail price of the gift?
Wednesday, May 18, 2016 by Anonymous

math
Five bacteria are placed in a dish and then counted each hour. The first three bacteria counts were 12, 26, 54. If the pattern continues, how many hours after the bacteria were placed in the dish will there be 222 bacteria?
Wednesday, May 18, 2016 by Anonymous

math
The perimeter of a right triangle is 24 inch. Find the dimensions of the triangle if the sides are all whole number lengths.
Wednesday, May 18, 2016 by Anonymous

MATH
A rectangular prism has length x+2 width x+1, height of 4, and a volume of 24. Find the length and width.
Wednesday, May 18, 2016 by Anonymous

math
A rectangle has length (x-3) cm and width 4 cm. The perimeter of the rectangle is 40 cm. Find the length.
Wednesday, May 18, 2016 by Anonymous

math
The actual length of a puma is 2.45 m. The scale of a drawing of a puma is 1 cm : 0.5 cm. Find the length of the puma in the drawing to the nearest tenth of a centimeter. my answer: 4.9 cm
Wednesday, May 18, 2016 by Please check my answer

MATH
In the problem 5/6 divided by 7/8, will the quotient be more or less than 1? explain how you know WITHOUT solving.
Wednesday, May 18, 2016 by Elsa

Math
The global competition for the World Cup is broken into six continental zones. The number of teams in Scottish teams zone is 17 less than twice the number of the teams in the Puerto Rican teams zone. How many teams are in each zone?
Wednesday, May 18, 2016 by Steve

math
finish the number pattern for the rule: 2n+1 3,5,... finish the number pattern for the rule: 4n+1 5,9,....
Wednesday, May 18, 2016 by teresa

Math
Mike drank more than half te juice in his glass. What fraction of the juice could mike have drunk.
Wednesday, May 18, 2016 by Katie

math
Sandra has 1/2 cups of sugar . But she needs 3/4 cups of sugar
Wednesday, May 18, 2016 by deniya

math
this exponential equation has different base,but same exponent. 4^× -9(2^×)=-20 i know the 4 is just 2squared, but i am just a little confounded when taking it into practice ,plz help
Wednesday, May 18, 2016 by Michelle

math
what is 2 2/3x 5
Wednesday, May 18, 2016 by sckid30

math
The mean of a set of twelve numbers is 5.5. The mean of another set of eight numbers is k. The mean of the combined set of 20 numbers is 8.5. Find the value of k
Wednesday, May 18, 2016 by leah

Math
IT takes Holly 5 hours to type a paper. It takes Mike 6 hours to type the same paper. HOw long would it take them working together? Just average?
Wednesday, May 18, 2016 by Jamie

math
sally's cell phone company charges a flat rate of $15.00 per month and $0.12 per minute. eduardo's cell phone company charges a flat rate of $18.00 per month and $0.09 per minute. how many minutes would you have to use for the price to be the same for both plans?
Wednesday, May 18, 2016 by alex

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