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January 26, 2015

Homework Help: Math

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Recent Math Questions

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Math
) If you are standing near the edge of the top of a 200 ft. building and throw a ball vertically upward it will be modeled by the function 𝑠(𝑡) = −16𝑡2 + 64𝑡 + 200 where s(t) is the balls height above ground in feet and t is seconds after ...
Thursday, December 4, 2014 at 6:36pm

Math
A man is running around a circular track that is 200m in circumference. An observer uses a stopwatch to record the runner’s time at the end of each lap, obtaining the data in the tale below. a. What was the man’s average speed (rate) between 68 s and 152 s? b. What ...
Thursday, December 4, 2014 at 6:35pm

Math calculous
x 1 2 3 4 h(x) 7 20 43 76 x = 1 h(x) = 7 x = 2 h(x) = 20 x = 3 h(x) = 43 x = 4 h(x) = 76 Using the table or in this case information for the polynomial function of the degree 2 Find the formula for h(x) h(x) = ?
Thursday, December 4, 2014 at 6:09pm

math
f(x)=x^6-2x^4-81x^2+162;-3
Thursday, December 4, 2014 at 6:09pm

Math
How to find x intercept and y intercept
Thursday, December 4, 2014 at 6:09pm

Math ( Percents as Ratios)
Sue receives a test score of 75% on a test with 20 questions. How many did she get correct? 👉 I need help making these kinds of questions into proportions because I have a Benchmark Test (like a mid year test) coming up & I need to be able to set up these kind of ...
Thursday, December 4, 2014 at 6:07pm

Math
Lisa sells cookies and gets a business where she pays $100 a month. If each cookie is $2 and there are 30 people in the store each week, how much money does she make in a month? What's the y intercept
Thursday, December 4, 2014 at 6:02pm

Math
The ratio of corresponding sides of two similar triangles is 2:7. The sides of the smaller triangle are 16 centimeters, 22 centimeters and 28 centimeters long. What is the perimeter of the larger triangle?
Thursday, December 4, 2014 at 5:58pm

Math
How do you know if a word problem is Direct Variation or not
Thursday, December 4, 2014 at 5:57pm

Math
It cost 4$ to enter the fair.Each ride cost $2.50.You have $21.50.How many rides can you go on?
Thursday, December 4, 2014 at 5:47pm

Math
Write a linear equation that is not a direct variation in word problem form. I need help how to make one
Thursday, December 4, 2014 at 5:46pm

Math
1. Determine which ratio forms a proportion with 9/5 by finding a common multiplier. a. 54/30 b. 45/50 c. 45/40 d. 90/20 2. Determine which ratio forms a proportion with 15/8 by using cross products. a. 25/16 b. 30/12 c. 60/32 d. 75/32 3. Solve 3/27 = w/54 a. 2 b. 6 c. 9 d. 18...
Thursday, December 4, 2014 at 5:27pm

Math
Direction:Write each power as a product of the same factor. Ten find the value. 1. 3^5
Thursday, December 4, 2014 at 5:21pm

Math
θ equals the angle in Quadrant II so that cot θ= -3. Find the values for sin θ, cos θ, and tan θ.
Thursday, December 4, 2014 at 5:20pm

Math Question
Find the values of the six trigonometric functions of an angle in standard position where the terminal side is going through the point (-1, 1). Sinθ = Cosθ= Tanθ= Cscθ= Secθ= Cotθ=
Thursday, December 4, 2014 at 5:19pm

Math
A container holds 5 quarts when filled now it contains 3 3/4 quarts of water. How much more water must be added to fill the container
Thursday, December 4, 2014 at 5:18pm

Simple math
If Kristin buys gas at $2.69 per gallon, which includes all taxes, what percentage of the price is the state tax? What percentage is the federal tax The state tax is .8 and federal tax is .18. So would I multiply each by the total amount the gas cost?
Thursday, December 4, 2014 at 4:52pm

Math
Given that x<5, rewrite 5x- (x-5) without using the absolute value signs. The () are absolute value signs.
Thursday, December 4, 2014 at 3:11pm

Math
Solve for the positive value of x such that 3sqrt(x^2-4x+4)=16. The 3 is the small number next to the sqrt sign.
Thursday, December 4, 2014 at 3:09pm

Math
Express the product x^2+4x/2x^2+13x+15 x x+5/x^2-16 in simplest form. a)- 1/2x+3 b)x/(2x-16)(x+4) c)(x^2+4x)(x+5)/(2x^2+13x+15)(x^2-16) d)x/(2x-3)(x-4)
Thursday, December 4, 2014 at 2:03pm

6th grade math
the sum of twelve divided by twice a number
Thursday, December 4, 2014 at 1:58pm

Math
I have got help from Damon on this question but all I need is help on integrating the answer he gave me into my original equation: y=-15/20.25(x+1.5)^2+0 Here's Damon's help: (x+1.5)(x+1.5) = x^2 + 1.5 x + 1.5 x + (1.5*1.5) = x^2 + 3 x + 2.25 So how would I put this ...
Thursday, December 4, 2014 at 1:51pm

Math
have got help from Damon on this question but all I need is help on integrating the answer he gave me into my original equation: y=-15/20.25(x+1.5)^2+0 Here's Damon's help: (x+1.5)(x+1.5) = x^2 + 1.5 x + 1.5 x + (1.5*1.5) = x^2 + 3 x + 2.25 So would I put this into my ...
Thursday, December 4, 2014 at 1:35pm

Math
A savings account with a current balance of $5,000 earns 2.75% annual interest, compounded continuously. To the nearest dollar, what will be the account balance in 10 years?
Thursday, December 4, 2014 at 1:31pm

Math
I have got help from Damon on this question but all I need is help on integrating the answer he gave me into my original equation: y=-15/20.25(x+1.5)^2+0 Here's Damon's help: (x+1.5)(x+1.5) = x^2 + 1.5 x + 1.5 x + (1.5*1.5) = x^2 + 3 x + 2.25 So would I put this into ...
Thursday, December 4, 2014 at 1:28pm

math
write the following square root in form a root b where a and b are intergers and b has the least value possible . root 45=
Thursday, December 4, 2014 at 1:10pm

Math
My math teacher said to use the FOIL (First Outer Inner Last) property to simplify these quadratic equations I have made from looking at two parabolas. Here are my equations & how would you use the FOIL property on each of the equations and also can someone help me with ...
Thursday, December 4, 2014 at 1:06pm

Math
How would I simplify these two equations I have made up from looking at parabolas: y=-15/20.25(x+1.5)^2+0 y=a(x+2)^2+1.5
Thursday, December 4, 2014 at 12:57pm

Math
The area of a rectangular field is 96m2. The length of one side is12m. The farmer needs to know its perimeter to work out how much fencing will be needed.
Thursday, December 4, 2014 at 12:36pm

Math
A length of rope is stretched between the top edge of a building and a stake in the ground. The head of the stake is at ground level. The rope also touches a tree that is growing halfway between the stake and the building. If the tree is 38 feet tall, how tall is the building...
Thursday, December 4, 2014 at 12:35pm

Math
A golf ball is hit off the top of a cliff that is 75 feet tall at an angle of 45° to the horizontal with an initial velocity of 80 feet per second. The quadratic equation shown below models the height, h(x), of the ball when it is x feet from the cliff’s edge. How far...
Thursday, December 4, 2014 at 12:22pm

math
Allie noticed that to get her test grade, she could take Valerie's grade, multiply it by 2 and subtract 15. If Valerie's test grade was x, how would you write Allie's test grade?
Thursday, December 4, 2014 at 12:14pm

5th grade math
how do i round and divide whith decimals????????????????????????????????​????????????????????????????????????????​????????????????????????????????????????​?????????????????????????????????????
Thursday, December 4, 2014 at 10:03am

5th grade math
how do i simplify
Thursday, December 4, 2014 at 10:02am

5th grade math
there is a gameboard and the arrow has landed on seven.what is the probability of spinning a number larger than 6 on the spinner?
Thursday, December 4, 2014 at 10:00am

math 3
The following data represent the asking price of a simple random sample of homes for sale. Construct a 99% confidence interval with and without the outlier included. Comment on the effect the outlier has on the confidence interval. Here is the information: $231,500 $279,900 $...
Thursday, December 4, 2014 at 8:00am

math
Determine all numbers in between 10 and 200 where 'n' is a prime and (n-1) is a perfect square.
Thursday, December 4, 2014 at 7:56am

math
which equation is the equation of a line that passes through (-10,3) and is perpendicular to y=5x-7?
Thursday, December 4, 2014 at 2:18am

math
Describe a situation in which it is better to round a mixed number up to the next whole number even if the fraction in the mixed number is closer to 1/2 than 1?
Thursday, December 4, 2014 at 12:04am

math
325 x .0145 =
Wednesday, December 3, 2014 at 11:39pm

math
(1.45) 325 x .0145 =
Wednesday, December 3, 2014 at 11:37pm

Math Help
Find the percent of increase. 50 to 70 A. 20% B. 30% C. 40% D. 50% Is the answer A?
Wednesday, December 3, 2014 at 11:29pm

Math
Evaluate log sqrt(5) 125sqrt(5).
Wednesday, December 3, 2014 at 11:26pm

Math
Find all solutions to the equation sqrt(2-3x)= 9. Express your answer as a common fraction. I squared both sides and I got 4-9z^2=81 and then -9z^2=77 then I divided both sides by -9 and now I am stuck, I know I can square root both sides. But I think something went wrong.
Wednesday, December 3, 2014 at 11:25pm

Math: Reiny
I already posted this question, and Reiny had a question about the question. How many square units are in the region satisfying the inequalities y>=(x) and y<=-(x)+3? Express your answer as a decimal. * the () are absolute value signs. •Math - Reiny, Wednesday, ...
Wednesday, December 3, 2014 at 11:21pm

math
a farmer has 120 m of fencing to make two identical rectangular enclosures using an existing wall as one side of each enclosure. The dimensions of each closure are x metres and y metres as shown. Obtain and expression in terms of x only for the total area of two enclosures, ...
Wednesday, December 3, 2014 at 11:19pm

math
A book store bought 160 copies of a book for $4,000. How much money will they loose if they give away 2 books. show in ratio table form. Every book costs $25 so the store would loose $50 but how do you put that in a ratio table?
Wednesday, December 3, 2014 at 10:18pm

math
Find the area of the region in the first quadrant that is below the parametric curve? the parametric curves are x = t^3 + 6t y = 4t - t^2 any help would be greatly appreciated. Thanks!
Wednesday, December 3, 2014 at 10:15pm

Math
Challenge 1: Compute log1/4 (32^-18). The 1/4 is the small number under the log.
Wednesday, December 3, 2014 at 10:14pm

Math
Find x, such that log (64)1/3) 4^x=1 The 64 and 1/3 are the small numbers under log.
Wednesday, December 3, 2014 at 10:12pm

Math
The square root of h is greater than 10/3 and less than 24/5. How many integer values of h satisfy this condition? I think the first step would be to square each fraction so 100/9 and 576/25 and then see which whole numbers are between. Am I on the right track?
Wednesday, December 3, 2014 at 10:09pm

math
If 18g of a radioactive substance are present initially and 5 yr later only 9g remains, how much of the substance will be present after 11yr?
Wednesday, December 3, 2014 at 10:08pm

Math
How many square units are in the region satisfying the inequalities y>=(x) and y<=-(x)+3? Express your answer as a decimal. * the () are absolute value signs.
Wednesday, December 3, 2014 at 10:07pm

Math Help
Use an equation to solve the problem. 224 is 25% of what number? A. 224*0.25=w;560 B. 224=0.25*w;896 C. 224*0.25=w;56 D. 224=0.25*w;90 Is the answer C?
Wednesday, December 3, 2014 at 10:03pm

Math
Real, Rational, Irrational, Integer, Whole, Natural 35.99 Real Ratio
Wednesday, December 3, 2014 at 9:59pm

Math Help
Use an equation to solve the problem. What is 57% of 11? A. 11=0.57*n; 19.3 B. n=57*11;627 C. n=0.57*11;6.27 D. 11=57*n;0.19 Is the answer C?
Wednesday, December 3, 2014 at 9:54pm

math
A photographer charge 20 dollars for 8x10 plus sitting fee. If 55 dollars was total for 2 photos and sitting fee. Assume the relationship is linear. Find and interpret the rate of change and intial value.
Wednesday, December 3, 2014 at 9:47pm

Math 120
Write 4logb(X)-1/3logb(y)+2logb(z)as a single logarithm Its log base b.
Wednesday, December 3, 2014 at 9:37pm

math - pls check!!!
29) 4k - 1 >= -3 30) 6(c - 1) < -18 31) 3t > 5t + 12 32) -6/7y - 6 >= 42 33) 4 + x/2 > 2x 34) 3x + 5 <= 2x -8 35) 13.5a + 7.4 <= 85.7 36) 42w > 2(w +7) ANSWERS: 29) k >= -2 30) c < -12 31) t < -6 32) y <= -56 33) x < 8/3 34) x <= -13 ...
Wednesday, December 3, 2014 at 9:34pm

Math
Expand and simplify (p+3)(p-7)
Wednesday, December 3, 2014 at 9:19pm

Math
Sr. John and his wife went to a party where four other married couples were present. Every person shook hands whit everyone he or she was no acquainted with. When the handshaking was over , Sir John asked everyone how many hands they shook. Sir. John was surprised when he got ...
Wednesday, December 3, 2014 at 9:13pm

Math
In the middle pond is a patch of moss. The moss doubles in size every day. After exactly 20 days the complete pond will be covered by moss. After how many days will half of the pond be covered by the moss ?
Wednesday, December 3, 2014 at 9:09pm

Math
Here men were invited to lunch one day. The host places them in a line on three chairs. The men are positioned in such as way that Man #3 can see both Man #1 and Man #2 , Man #2 can see only Man # 1 , and Man #1 can see none of the other men. The host then show each man 5 ...
Wednesday, December 3, 2014 at 9:06pm

Math
Once there four boys who wanted to cross a street. They were all on the same side. It was night time and they only had one flashlight between them. Only two boys can cross the street at a time, and anyone who crosses , either one or two people, must always have a flashlight ...
Wednesday, December 3, 2014 at 8:57pm

MAth
Real, Rational, Irrational, Integer, Whole, Natural 4 1/8 Rational Real
Wednesday, December 3, 2014 at 8:53pm

Math
Writing with exponents 2x2x2
Wednesday, December 3, 2014 at 8:48pm

Math
how many fractions between 1/4 and 1/2
Wednesday, December 3, 2014 at 8:30pm

Math
Compute Adela's estimated tax payment for the second quarter. She is self employed and she expects to earn $93,440 this year. Her estimated income tax rate is 25%. For self employed persons, social security tax is 12.4% of wages up to $106,800, and Medicare tax is 2.9% of ...
Wednesday, December 3, 2014 at 8:30pm

math
taryn and alastair both mow lawns. Each charges a flat fee to mow a lawn. The table shows the number of lawns in the past week, the time spent mowing lawns and the money earned. Taryn mowed 9 lawns. She spent 7.5 hrs mowing lawns. Taryn earned $112.50 Alastair mowed 7 lawns. ...
Wednesday, December 3, 2014 at 8:24pm

Math
Whats 9 + 10
Wednesday, December 3, 2014 at 8:22pm

Math
A fishing boat leaves port at 5 miles per hour at a bearing of 350∘ for 2 hours, then turns to a bearing of 40∘ at 12 miles per hour for 2 hours, and finally changes to a bearing of 180∘ at 10 miles per hour for 5 hours. At this point, the boat heads directly...
Wednesday, December 3, 2014 at 8:21pm

math
delias family car weight 2 tons. how many ounces does the car weight?
Wednesday, December 3, 2014 at 8:12pm

Math
Is 3.87655 a rational number
Wednesday, December 3, 2014 at 8:10pm

Math
When a number is a multiple of 6, what are the possible values for the ones digit?
Wednesday, December 3, 2014 at 8:00pm

Business Math
Kristy has bi-weekly gross earnings of $1,750. What were her total social security and Medicare tax with holdings for a whole year?
Wednesday, December 3, 2014 at 7:58pm

Math
Name ALL sets of numbers to which each number belongs Real Rational Irrational Integer Whole Natural 0 Whole Integer Square root of 5 Irrational -80 Integer 12/3 Rational square root of 100 Irrational square root of 4 Irrational 3pi Irrational
Wednesday, December 3, 2014 at 7:48pm

Math
Using the data from the set included, what is the minimum number of 4's that must be added to make 6 an outlier? Data Values:-3,-1,1,3,4,5,6,7,9 Frequency: 34,6,12,4,7+x,1,20,3,12 Cumulative Frequency: 34,40,52,56,63+x, 64+x,84+x,87+x,99+x This is not for homework, it is ...
Wednesday, December 3, 2014 at 7:45pm

Math
Suzan needs a bored that is at least 3.5 meters long and I have a 17 centimeter books is that enough
Wednesday, December 3, 2014 at 7:15pm

math
The ratio of an object's weight on Earth to its weight on Neptune is 5 : 7. How much would a person who weighs 150 pounds on Earth weigh on Neptune?
Wednesday, December 3, 2014 at 6:28pm

Math fraction
2/7=_/21
Wednesday, December 3, 2014 at 6:22pm

Math
Name ALL sets of numbers to which each number belongs Real, Rational, Irrational, Integer, Whole, Natural -5/6
Wednesday, December 3, 2014 at 6:09pm

math
Q. What's 463 divided by 16? A. 8??
Wednesday, December 3, 2014 at 6:00pm

Math
Calcium is essential to tree growth because it promotes the formation of wood and maintains cell walls. In 1990, the concentration of calcium in precipitation in a certain area was 0.11 milligrams per liter (mg/L). A random sample of 10 precipitation dates in 2007 results in ...
Wednesday, December 3, 2014 at 5:58pm

Math please help
According to a study conducted by a statistical organization, the proportion of americans who are satisfied with the way things are going in their lives is 0.82. Suppose that a random sample of 105 Americans is obtained. (Please answer the below and round to four decimals ...
Wednesday, December 3, 2014 at 5:57pm

6th grade Math
Abraham earns $11.50 an hour. How many hours will Abraham have to work to earn $483? Please Show Work!!!!
Wednesday, December 3, 2014 at 4:58pm

Math
How do you put 28/4 in a whole number
Wednesday, December 3, 2014 at 4:54pm

math
I need help with Lesson 4 Unit 3
Wednesday, December 3, 2014 at 4:31pm

math
At Soap ans Suds there are 16 washing machines in a single row with no space between each one.Each washing mashine is 2 feet 5 inches across. What is the total length of the 16 washing machines?
Wednesday, December 3, 2014 at 4:30pm

math
x^2-20=0
Wednesday, December 3, 2014 at 4:19pm

math
The area of a circle with radius r given by the formula A = pi r^2. If a circle has area 81 pi square in inches, what is the radius?
Wednesday, December 3, 2014 at 4:05pm

Math check my answer please!
Which expression is equivalent to 4x4x4x4x4x4x4x4? a. 4 x 8 b. 8^4 c. 8x8 d. 4^8 I think D.
Wednesday, December 3, 2014 at 2:30pm

Math
There are four kinds of road signs in a certain town. The number of each kind is shown. What is the ratio of the number of school signs to the number of stop signs?
Wednesday, December 3, 2014 at 2:25pm

Math
an employee is hired at a salary of $38560.25 which is 5.5% higher than her salary at her previous job. what was her previous salary?
Wednesday, December 3, 2014 at 1:33pm

2 math ?s
Thank you so much in advance! Verify each identity. Work one side (the harder side) Please show me the work sin θ +cos θ cot θ= csc θ Cos^2 θ + 1 =2cos^2 θ +sin^2 θ
Wednesday, December 3, 2014 at 11:06am

3 Math
If you know That 4 x5= 20, how can you use the commutative property to find 5x4= 20 ?
Wednesday, December 3, 2014 at 10:55am

DUMB MATH
How the heck do I do this: I am z. To find me, multiply b by 3,then subtract 7. HELLLLPPPPPPP!
Wednesday, December 3, 2014 at 9:53am

math
Daniel scored 162 points playing his video game.he can move to the next level of the game when he earns 275 points exactly. daniel says he needs about 100 points to get to the next level his friend Valerie says he needs about a 120 points to get to the next level explain why ...
Wednesday, December 3, 2014 at 9:46am

math
bianca has total of 25c.She has some nickels and pennies.How many different combination of nickels and pennies could bianca have?
Wednesday, December 3, 2014 at 6:54am

Business Math
Check My Work (7 remaining) What payment should be made on an invoice in the amount of $3,400 dated August 7 if the terms of sale are 3/15, 2/30, n/45 and the bill is paid on ... a. ... August 19? $ b. ... September 3? $
Wednesday, December 3, 2014 at 5:01am

math
3. In a class of 40 boys, 18 passed Business Mathematics, 19 passed Accounts, 10 passed Economics, 6 passed Accounts only, 5 passed Business Mathematics and Accounts only, 2 Passed Accounts and Economics only. How many passed in all three papers.
Wednesday, December 3, 2014 at 2:29am

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