# Recently Submitted Homework Problems for Following Grade: 8

94. Name four countries with the most access to safe drinking water? (Answered)165. I need some help with equations... this is my problem...

5/3 + 2/3x = 25/12 + 5/4x + 3/4 (Answered)

191. I need to know how to do problems like this, I want to know how to solve, and simplify them, and also finding slopes. Like these kinds of problems(Write the equation, 3x + 5y = 15, in the slope intercept form (y = mx + b)) (Answered)

221. how do I find the perimeter of a polynomial? (Answered)

243. how do you find the area of a base on a 3-D rectangle? (Answered)

330. The trajectory of a model rocket launched from a rocket launcher on the ground at an angle of 40 degrees with an initial speed of 60 meters per second can be modeled by the parabola: 0.84x - 0.0023x2, where the x-axis is the ground. Find the height of the highest point of the trajectory and the horizontal distance the model rocket travels before hitting the ground. (Answered)

330. The trajectory of a model rocket launched from a rocket launcher on the ground at an angle of 40 degrees with an initial speed of 60 meters per second can be modeled by the parabola: 0.84x - 0.0023x2, where the x-axis is the ground. Find the height of the highest point of the trajectory and the horizontal distance the model rocket travels before hitting the ground. (Answered)

331. What is the history of Tango dancing (Answered)

334. of 8400 adults who registered complaints with the Better Business Bureau, 10.3% complained about auto repair and service. How many complaints were made about auto repair and service? (Answered)

344. a close rectangular box measuring 72cm by 54cm by48cm externally is made up of wood find the capacity of the box in litres,the volume of woodused in making the box,and the mass of the box if the density of the wood used is 0.9g/cmcube (Answered)

493. what is the square root of 444*111/ (Answered)

517. define a variable and write and equation for the situation. then solve. one cell phone plan costs 39.95 per month. the first 500 min. of usage are free. each minute there after costs .35 cents. write a rule that describes the total monthly cost as a function of the number of min. of usage(over 500 min). then find the number of minutes of usage over 500 min. for a bill of 69.70. (Answered)

5226. On Friday, a house is haunted by a combined total of 51 ghosts, goblins and ghouls, and there were 1/2 as many ghosts as there were goblins. On Saturday, 2/3 of the ghouls each became a ghost. On Sunday, 11 of the ghosts each became a goblin, and the ratio of ghouls to goblins was then 1/3. At that time how many ghosts were there?

I need to learn how to some it (Answered)

813. I saved $32 on a jacket,and the jacket was 40% off,how much was the original price with out the discount?

(Answered)

890. Can you help me solve a systems of equations problem

-2x+y=-2

2x+y=6 (Answered)

903. Hydrogen and Oxygen making water is an example of what kind of change?

(Answered)

1115. x^2=4 graph this quadratic equation (Answered)

1232. x squared over 4 minus x equals 3 (Answered)

1272. A gallon of paint costs $ 18 and covers 300 square feet. how many gallons are needed to paint the walls and bottom of a rectangular swimming pool whose length is 25 feet, width is 16 feet, and dept is 4 feet ? Round to the next whole gallon (Answered)

1276. how do you solve science balancing equations? (Answered)

1303. find the perimeter of the polygon with vertices A(-5,-3) B(1,0) C (3,-4) D(-3,-7) (Answered)

1347. How do you find the area of a triangle inscribed within a circle? (Answered)

1367. Write the equation of the line in slope-intercept form, that contains the points (-2, 3) and (-8,3).

(Answered)

1390. 5*10-x=108 (Answered)

1416. Which equation represents a line that contains R(-5,4) and S(7,2)? (Answered)

1422. Help me solve this Science problem... Balance lead nitrate and potassium iodine to satisfy the Law of Conservation of Mass (Answered)

1422. Help me solve this Science problem... Balance lead nitrate and potassium iodine to satisfy the Law of Conservation of Mass (Answered)

1424. Help me solve this science problem...what does hydraulics and mechanical efficiency have in common, explain? (Answered)

1438. 6x/x+4=(x-1) solve for x (Answered)

1446. Mrs Rowley and Mrs Swarts are running a 13.1 mile marathon.

Mrs Rowley can run a 9.5 min mile.

Mrs Swarts can run an 11 min mile

What is Mrs Rowleys total time in hours to finish the marathon? (Answered)

1558. solve the inequality and graph the solution.

(absolute value) a-4 (absolute value) >= 3 (Answered)

1558. solve the inequality and graph the solution.

(absolute value) a-4 (absolute value) >= 3 (Answered)

1748. For an art project, you make a square print with a side length of 8 inches. You make a frame using strips of wood 1 and one fourth inches wide. What is the area of the frame? (Answered)

1791. 1. Students will create flash cards of integer rules for addition, subtraction, multiplication and division. One side of the card will show the rule. The other side will show 2 examples. You must have the following rules for a total of 14 cards:

- A positive integer plus a positive integer

- A positive integer plus a negative integer

- A negative integer plus a negative integer

- A positive integer minus a positive integer

- A positive integer minus a negative integer

- A negative integer minus a positive integer

- A negative integer minus a negative integer

- A positive integer times a positive integer

- A positive integer times a negative integer

- A negative integer times a negative integer

- A positive integer divided by a positive integer

- A positive integer divided by a negative integer (or a negative integer divided by a positive integer)

- A negative integer divided by a positive integer

- A negative integer by divided a negative integer

(Answered)

1791. 1. Students will create flash cards of integer rules for addition, subtraction, multiplication and division. One side of the card will show the rule. The other side will show 2 examples. You must have the following rules for a total of 14 cards:

- A positive integer plus a positive integer

- A positive integer plus a negative integer

- A negative integer plus a negative integer

- A positive integer minus a positive integer

- A positive integer minus a negative integer

- A negative integer minus a positive integer

- A negative integer minus a negative integer

- A positive integer times a positive integer

- A positive integer times a negative integer

- A negative integer times a negative integer

- A positive integer divided by a positive integer

- A positive integer divided by a negative integer (or a negative integer divided by a positive integer)

- A negative integer divided by a positive integer

- A negative integer by divided a negative integer

(Answered)

1793. simplify 7(x+2)-4 (Answered)

1793. simplify 7(x+2)-4 (Answered)

1846. Please help me with this math problem:

RS=2x+10

ST=x-4

RT=21

Solve in terms of x. Then find RS and ST (Answered)

1981. 4a-2a(b-6)

simplify this by combining like terms (Answered)

1981. 4a-2a(b-6)

simplify this by combining like terms (Answered)

1991. 5+2(n+1)=2n (Answered)

1991. 5+2(n+1)=2n (Answered)

1992. 1/5+3/15w=4/5+w (Answered)

1992. 1/5+3/15w=4/5+w (Answered)

2003. What is the equation for the word problem: The perimeter of a pool table is 30 ft. The table is twice as long as it is wide. What is the \\\"L\\\" of the pool table? Write an equation to model the situation. Then solve the equation for \\\"L\\\". (Answered)

2005. suppose you are designing a rectangle garden with an area of 360 sq ft.

What perimeter can you make the garden using whole numbers? for each perimeter , give the length and width. (Answered)

2007. Could you help me with this problem?

Heat in the room caused the water in a glass to evaporate. Is that a Law? or a Theory? (Answered)

2026. 12 divided by (-4/9) (Answered)

2079. What is the net force on a rock that weighs 500 N if the weight of the water it displaces is 300 N (Answered)

2093. How do u do perfect Squares (Answered)

2110. find the missing coordinate. y= 2-x over 4 is perpendicular to (1,7) (-1,?) (Answered)

2112. Mary paid $179.00 instead of the usual price of $256.00 for a classical guitar. How much did she save? (Answered)

2140. A chemist wants to dilute a 30% phosphorate acid solution to a 15% solution. He needs 10 liters of the 15% solution. How many liters of the 30% solution must he use. (Answered)

2158. Is -0.75 a real number, integer, rational whole number or irrational ? (Answered)

2205. Help me solve this math problem, A diameter of a softball in 3.8in. Estimate the amount of leather used to cover the ball (Answered)

2205. Help me solve this math problem, A diameter of a softball in 3.8in. Estimate the amount of leather used to cover the ball (Answered)

2214. When school ends at 3:15 PM, Jake starts to walk home at the rate of 3 miles per hour. Finn leaves school 5 minutes later and takes the exact same route as Jake. If Finn walks at a rate of 3.6 miles per hour, at what time will he catch up with Jake? (Answered)

2214. When school ends at 3:15 PM, Jake starts to walk home at the rate of 3 miles per hour. Finn leaves school 5 minutes later and takes the exact same route as Jake. If Finn walks at a rate of 3.6 miles per hour, at what time will he catch up with Jake? (Answered)

2237. help me solve this math problem 5(3-2y)+4y=3 (Answered)

2245. A bag holds 5 red marbles, 3 white marbles, and 2 green marbles. A marble is drawn, kept out, and then another marble is drawn. What is the probability of drawing 2 white marbles? (Answered)

2251. How to construct a square with perimeter z? (Answered)

2252. Linear Equations

y=-x+3

y=x+1 (Answered)

2402. (k, k+1) (k-3,3k+4)find the value of k when m=2 write in point slope form (Answered)

2423. You need to rent a car for a three-day business trip. You compare the prices at two different rental agencies. The first agency charges $20.25 per day and $.14 per mile. The second agency charges $18.25 per day and $.22 per mile. How many miles would you have to drive before the first agency is less expensive than the second?

(Answered)

2517. substitute m=6 and n=-3 express and evaluate please help (Answered)

2621. what percent of 4,120 is 7.416?

(Answered)

2656. 3X+2=1 (Answered)

2973. the sum of four consecutive even integers equals seven times the greatest of the integer. find integer (Answered)

3077. square root of 64x to the power of 6 (Answered)

3170. the senior classes at high school A and high school b planned seperate trips to new york city. The senior classes at high school a rented and filled 1 van and 6buses with 372 students. High school b rented and filled 4 vans and 12 buse with 780 students. Each van and each bus carried the same number of students. How many students can a van carry? How many students can a bus carry? (Answered)

3322. 8/6 : find two ratios that are equivalent to the given ratio (Answered)

3330. Sherry bought a stereo for $620.10 including 6% sales tax. If she bought it in a different state where the sales tax is 4% how much would she have saved?

(Answered)

3490. Tim recorded that 27 out of 63 customers used a shopping cart at a grocery store. Based on the Results, about how many customers out of 350 can be expected to use a shopping Cart? (Answered)

3499. how do i get the y intercept with this equation x-y=-4

(Answered)

3534. Write the rule for the sequence. Then find the next term.

3, -1, 1/3, -1/9 (Answered)

3556. y=3/4x+5. X= -2 (Answered)

3737. Help me solve equations with variables on both sides, such as 14b=16(b+12) (Answered)

3750. how do you solve this problem

2x=3+3x=2(x+6) (Answered)

3750. how do you solve this problem

2x=3+3x=2(x+6) (Answered)

3803. the length of a rectangle is 1cm shorter than a diagonal.the length is 2cm longer than twice the width. find the perimeter of the rectangle. (Answered)

3803. the length of a rectangle is 1cm shorter than a diagonal.the length is 2cm longer than twice the width. find the perimeter of the rectangle. (Answered)

3833. (root)5 x (root)30 x (root)3 (Answered)

3833. (root)5 x (root)30 x (root)3 (Answered)

4261. triangle rst is similar to vwx and rt divided by vx equals b. What is the area of triangle rst divided by the area of triangle vwx?

(Answered)

4332. hi! i need help with this problem: In britain, the 17 1/2% V.A.T(value added tax) is included in the price of items purchased. bob bought a cd player for E235.00 how much did he pay in tax? (Answered)

4511. 8(9-9)to the third power +2 =? (Answered)

4605. I need help with this problem The sum of two numbers is 80. One number is 26 more than the other find the numbers (Answered)

4605. I need help with this problem The sum of two numbers is 80. One number is 26 more than the other find the numbers (Answered)

5027. what is the range if your numbers are 8,0 and 6 (Answered)

5068. Using property, how to solve 3* (-9*4) (Answered)

5171. Simplify the square root of 48 (Answered)

5183. 0.3k + 0.85k - 2 = 2.6 (Answered)

5201. I am in algebra 1 and we are learning word problems. the question is "Find a number that is 15 more than 4 times its opposite." (Answered)

5371. what is the origin of the energy that powers stars (Answered)

5577. Help me solve this science problem How is sound reflected?

(Answered)

5596. x+1/3 = X-2/4 + 1/3 (Answered)

5595. Two numbers are such that the ratio between them is 3:5. If each is increased by 10, the ratio

between the new numbers so formed is 5:7. Find the original numbers.

(Answered)

5608. What are 6 living things? (Answered)

5638. what colour would grass blades be if the soil ph was 8.0-9.0? (Answered)

5724. Blind spot.

What is the blind spot of the eye? Explain it. (Answered)