# Posts by math

Total # Posts: 463

**Economics**

Can anyone walk me through the solution of this problem? 1/2(1600/E)^1/2*50=? Thank You

**geometry**

is what i picked

**geometry**

(d)

**geometry**

im not that good at geometry i need some one to check this for me XY bisects AB at point g which of the following is true about point g a. g is the mid point of AB b. g is the mid point of XY c. g is the mid point of AB and XY d. none of these*

**Math**

On Friday Naomi walked 3/4 of a mile. On Saturday she walked 1 2/3 of a mile On Sunday she walked 2 3/5 of a mile. How many miles did she walk in total?

**science**

What are the differences between aa lava and pahoehoe lava? What are the similarities between these two types of lava?

**math**

mikes truck engine holds 1 1/4 gallons of oil if there are 3 quarts of oil in the engine now how many more quarts of oil does mike need to add to fill the engine capacity? -(hint i gallon is 4 quarts)

**math**

it took 12 gallons of gas to fill the family car this is 5/6 the amount that the tank can hold how much gas can the tank hold? A.10 Gallons B.14 2/5 Gallons C.12 5/6 Gallons D.13 5/6 Gallons-My Answer Please check thanks:)

**math**

thanks everyone

**math**

13. solve the equation 4 2/5x = 12 1/10 A.7 7/10 B.2 3/4-My Answer C.2 1/2 D.4/11 Please help!!!

**Math**

Kevin moved from a city to a small town. The population of the city was 6 x 10^5, which is about 15 times a great as the small town. Write an expression in scientific notation that represents the population of the small town. I got 4 x 10^4? Please explain if I got it wrong

**math help g**

Chris has a square garden with an area of 38.4m^2. He decreases the length of each side by 1.7m to make a smaller garden. What is the closet to the perimeter of the smaller garden?

**Math**

A school wants to build a fence to enclose a rectangular 4-sided playground of 144m^2. What is the min cost for a fence if it costs $5.70 per meter of fencing? 2. The principal checks the budget an sees that only $228 is available for the purchase of fencing. What s the ...

**math**

3(y + 1) for y = 2 A 6 B 9*** C 7 D 8 If anybody has taken this test, it would be great if you could help me on some other answers in this test.

**math**

Solve each linear system. Verify each solution by substituting the coordinates of your solutino into both equations. a) y = -x and y = x - 6 b) x - y = 8 and x + 2y = 2

**MATH PLEASE HELP**

A forest owned by the Jumbo Lumber Corporation contains 7,820 trees. If Jumbo Lumber cuts down 77 trees every day, which function can be used to find the number of trees, n, left in the forest after t days? A. n(t) = 7,820 - 77t B. n(t) = 7,820t - 77(my answer) C. n(t) = (7,...

**MATH PLEASE HELP**

Also between weighs and pounds its 7/2

**MATH PLEASE HELP**

Bruce bought four packages of cornbread mix that each weighs x pounds. He also bought a package of biscuit mix that weighs pounds more than one package of cornbread mix. If the total weight of the items that Bruce bought is 31 pounds, what is the weight, in pounds, of each ...

**math**

the circumference of s sphere is measured to be 10 cm with an error of 0.4cm.the this radius is used to calculate the area and volume.find the errors in the calculated radius,area and volume

**Math**

One of the two results is a smaller cone.. would your theory still work?

**Math**

The cost of 1lb of strawberries is a dollar more than the cost of 1lb of grapes. If ms. A bought 2lbs of strawberries and 5lbs of grapes for $12.50. What is the cost of the fruits.

**math**

Right I forgot that it still means one.

**math**

Yeah But I dont under stand how q + -.25q is equalled to -0.75q

**math**

32-q+0.25q=15.50 Can someone explain how to solve this?

**math**

I still dont understand.

**math**

Debra has $67 loonies and toonies. If there are 45 coins in total, how many loonies are there

**Math**

I dont get it

**Math**

5/8 + 7/12

**math**

Write y to the power of -4 as a power with only positive exponents. Thanks need help on this question

**math**

Differentiate s=(2-t)^2 with respect to t

**Math**

I am a 5 digit number. All my digits are the same and the sum of digits is 40 .

**Math**

A car dealer purchases 40 new cars at 6,500 each. He sold 40% of them at 8,000 each and the rest of them at 9,000 each. What is his total profit?

**math**

solve y=0.04x^2+8.3x+4.3

**math**

1.one more than 3 tens 2.one less than four times five 3.five added to six 4.successor of 28 5.two more than two times tens 6.the greatest 1 digit composite number 7.three added to three times three

**Math**

1. Use 3.14 for pie to estimate the area of a circle. The diameter is given. Round your answer to the nearest hundredth if necessary. (the diameter is 16.8) 2. Find the missing length. Round to the nearest tenth, if necessary. (7,19)

**Math**

Did John Cena ever do math? It doesn't look like he did..

**math**

Can someone please tell me what is the percentage of 19.24 from 14.00? I would like someone to give the formula of solving this. Thank You!

**algebra **

Suppose x can be expressed as a function of y by x = 5y ? 3. a. How can y be expressed as a function of x? b. What is the relationship between the slopes of the two linear equations? c. How do the x-intercepts and y-intercepts of the two equations relate?

**math **

round to the nearest hundredths 1.5.

**Math**

Two business partners, Ellen and Bob, invested money in their business at a ratio of 6 to 7. Bob invested the greater amount. The total amount invested was $260. How much did each partner invest?

**math **

what can * by -168 and adds to get 21.

**Math**

Is x+3=2y and x=2y-3 have infinitely solutions or one solution or no solution

**Math**

Thank you

**Math**

I am confused on this. Can anyone show me where to start on how to solve it? Given the cipher and function below, decode the following message: 14-2-21-9 10-20 7-22-15 Function: f(x)=2x-2 Cipher A=2, b=4, c=6, d=8, e=10, f=12, g=14, h=16, i=18 j=20, k=22, l=24, m=26, n=28, o=...

**Math**

Construct a right triangle having hypotenuse of length 5.6 and one of whose acute angle measure 30

**MATH**

The grocery store parking lot is shaped like a parallelogram. Mr.Campbell is paving the parking lot.The area of the parking lot is 6x^2-3x-3m^2. what are the measures of the height and base of the parking lot. i did 3(2x^2-x-m^2) as my first step but now i am confused.

**Math**

write a function rule for the area of a rectangle or picture frame that has a width of 22 in less than its length use the function rule to find the area of the picture frame the length is 39 inches

**Pam**

How to find the vertex ? f(x)= x^2-3

**Pam**

What is the horizontal asymptote? y=x^2+11x+16/x+8

**Math**

The volume of seed in a bird feeder is represented by the equation V = 12(24-h) Q: Make a table of ordered pairs (h,V)

**Math**

But how did you get 3/16?

**Math**

Thanks!

**Math**

A meteorologist predicted that the downtown area would get 16 inches of snow in a snowstorm. The downtown area ended up getting 13 inches of snow. What was the percent error of the prediction?

**Algebra **

Use the figure to answer questions 1-3 file:///C:/Users/Student/Downloads/642756-212012-25329-PM-1227809791%20(1).png 1. Name a pair of complementary angles. ?1 and ?4 ?1 and ?6 ?3 and ?4 ?4 and ?5 2. If m ?1 = 53°, what is m ?4? 53° 43° 37° 27° 3. If m ?1...

**math**

One half a number minus 6 is 4 . What is the number?

**Math**

A class has 30 boys and 25 girls. what is the percentage of boys in the class?

**Algebra 1**

Thanks

**Algebra 1**

Suppose y varies directly with x, and y=25 when x=-140. What is the value of y when x=36 A)140 B)165 C)201.6***** D)176

**Emma**

Solve (?6+i)(?6-1)

**pre calc**

You have a sample of a certain radioactive substance. After two days, thirty percent of the sample has decayed. What is the half-life of the material and how much will have decayed after a week?

**Math**

I took it and it says the answers are 1. B 2. A 3. B 4. C 5. B I changed answers 4 and 5 on my own before subbmitting and I am glad I did because this it what it says is right.

**physics**

An ideal gas has the following initial conditions: Vi = 490 cm3, Pi = 5 atm, and Ti = 100°C. What is its final temperature if the pressure is reduced to 1 atm and the volume expands to 1000 cm3?

**2nd grade math**

Please help. I'm confused here's an example: 38+45=? Show how to make one added the next tens number?

**Plane Trigonometry**

tan A=-4/5;A in Quadrant 2 and cos B=-5/13: B in Quadrant 3. What is the exact value of the expression cos(A+B)?

**physics**

Given that the carbon atom has a mass of 12 amu, how many carbon atoms are there in a diamond with a mass of 8 g? ....atoms

**math**

No idea

**math**

Find the value of K so that x^2-5x+k=0 has one root equal to 4.

**Math**

A glass containing 250 mL of 80% iodine solution tips over spelling part of its contents. This subsequently replaced by an amount from a mixture of 40% iodine. If a 72% solution is resulted, how much was spilled?

**Math**

How many kg of pure salt must be added to 8 kg of a 30% solution to obtain a 35% soltution?

**Aria**

If a projectile is shot vertically upward from the ground with an initial velocity of 100 ft per sec, neglecting air resistance, its height s (in feet) above the ground t seconds after projection is given by s= -16t^2 + 100t a) After how many seconds will it be 50ft above the ...

**pre-calc**

|2x+1| greater than or equal to |x-3|

**Pre-calc**

I trust Steve

**Pre-calc**

Alice walks on a straight line at four miles per hour. Two hours after she begins walking, Bob runs after her at a rate of six miles per hour. How fast (in miles per hour) is Bob gaining on Alice?

**pre-calc**

Alice walks on a straight line at four miles per hour. Two hours after she begins walking, Bob runs after her at a rate of six miles per hour. How fast (in miles per hour) is Bob gaining on Alice?

**pre-calc**

Alice walks on a straight line at four miles per hour. Two hours after she begins walking, Bob runs after her at a rate of six miles per hour. How fast (in miles per hour) is Bob gaining on Alice?

**pre-calc**

We use the same polynomials as in the first question. Suppose that 3x^3 + 2x + 1 = (ax^2 + bx + c)(x+2) + d. Then b is equal to:

**math**

68 times

**Pre-Calc**

A force, F, on a body of mass m causes the body to accelerate. Denote the acceleration of the body by a. The relationship between force, mass, and acceleration is F = ma. If we take the unit of mass to be a kilogram, the unit of distance to be a meter, and the unit of time to ...

**pre-calc**

The force, F, between two bodies of mass m1 kilograms and m2 kilograms whose centers of mass are a distance of r meters apart is given by the formula F = (Gm1m2)/ r2 where G is the gravitational constant of the universe. What are the units of the gravitational constant G?

**pre-calc**

The radius of the earth is approximately 4,000 miles. The acceleration due to gravity is approximately 32 feet per square second. The mass of the earth is approximately 6 × 10^24 kilograms. Calculate the value of G in units of kilograms, meters, and seconds.

**Math**

In a particular year, a total of 63,172 students studied in two of the most popular host countries when traveling abroad. If 7306 more students studied in the most popular host country than in the second most popular host country, find how many students studied ...

**Pre-calc**

Problem 1. Suppose x > 0. Simplify the expression [(x+h)^1/2− (x) ^1/2]/h . For what values of h is this expression defined?

**Math**

Alice paints at a rate of 10 square feet per minute and Bob paints at a rate of 8 square feet per minute. If they work together, how many square feet can they paint per minute?

**Math**

Write out the full question please

**jay**

The formula for the perimeter of a rectangle is P=2(l+w)P=2(l+w). Solve for w. w=2P−lw=2P−l w=p2−lw=p2−l w=p−l2w=p−l2 w=P2+l D?

**math**

54, 63 , 72

**jay**

c?

**jay**

For a trapezoid, the following formula relates the area A, the two bases a and b, and the height h. A=(a+b)2hA=(a+b)2h Solve for a. a=2Ah+ba=2Ah+b a=2A−bha=2A−bh a=2Ah−ba=2Ah−b a=Ah2−b

**geometry**

The area of a triangle with sides 10,10,12 is __ sq. units.

**lin**

the product of the factors of 6

**lola**

how much bigger than -9 is -1

**Math**

I forgot to add that the boys and girls need to be in alternated seats

**Math**

If there are 5 boys and 7girls, in how many ways can 5 boys and 5girls sit in a round table? Is the ans : 5!*4!*7c5? Reason: since there are 5 boys so (5-1)! And left 5 seats for girls so 7c5 and within the girls theres 5 diffrent ones so another 5!

**maths**

Different ways of arranging 72 books in equal piles

**lauren**

$6300 is invested, part of it at 11% and part of it at 77%. For a certain year, the total yield is $565.00. How much was invested at each rate? how much was invested at 11% and 7%? thank you

**Ap series**

Sum of first six term of an ap is 46 ratio of its 10th term to that of 30th term is 1:3. Find its 13th term

**mathematics**

a1=1 ,an=3an-1+2 for n>2

**math**

6 red balls and 5white total 20balls how many yellow balls find probility

**Maths Year 10**

Q) the difference between two numbers is 5. A) if the larger number is k, what is the other number? B) write a simplified expression for the product of both numbers. ??? ty in adv.

**5th Grade Math - Urgent**

It's nothing. Because it's impossible. Lol so easy.