Posts by math
Total # Posts: 482

Math
A user is charged php300 monthly for a particular mobile plan, which includes 100 free text messages. Messages in excess of 100 are charged php1 each. Represent the amount as a function of the number of messages m sent in a month.expressed by the piecewise function. 
Math
These are questions from a test. Please do not respond. 
math
Which answer best completes the following sentence? Two advantages of a confederation are that it ______ and ______. A: prevents abuse of power by a national government; preserves local identity B: concentrates power in state governments; makes national government too weak to ... 
math ( pls pls help )
This is a test question. No more answers please. 
Anonymous
how do you find the regression? 
Anonymous
The following table compares the speed you drive in km/h to the fuel economy in km/L. Find the speed you need to travel to max your fuel economy. Speed 24 32 40 48 56 64 72 80 89 97 105 113 Fuel Economy 9.48 10.84 11.69 12.33 12.24 12.75 12.71 12.84 12.92 12.24 11.65 10.76 
Math
Wow thank you so much :) 
Math
The average depth of the water at the end of the dock is 6 feet. High tide occurs at 6 am and low tide occurs at 6 pm. The depth of the water at high tide is 9 feet. The information can be graphed using a sinusoidal function. Your boat needs at least 4.5 feet of water to come ... 
Math
The following table compares the speed you drive in km/h to the fuel economy in km/L. Find the speed you need to travel to max your fuel economy. Speed 24 32 40 48 56 64 72 80 89 97 105 113 Fuel Economy 9.48 10.84 11.69 12.33 12.24 12.75 12.71 12.84 12.92 12.24 11.65 10.76 
math
Pat has 4 1/2 feet of fabric each piece is 9 inches how man pieces can pat cut 
Math
Amanda cuts of 45cm ribbon into two pieces in the ratio of 4:5 find the length of the shorter piece. 
Math
Find the function rule (2,9) (1,4) (0,1) (1,6) (2,11) I think the function rule is you subtract 5 from the y as you go on. 
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 GallonsMy Answer Please check thanks:) 
math
thanks everyone 
math
13. solve the equation 4 2/5x = 12 1/10 A.7 7/10 B.2 3/4My 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 4sided 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
32q+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=(2t)^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
I got 2/16 but I’m bad at math so idk 
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 xintercepts and yintercepts 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=2y3 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: 142219 1020 72215 Function: f(x)=2x2 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^23x3m^2. what are the measures of the height and base of the parking lot. i did 3(2x^2xm^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^23 
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(24h) 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 13 file:///C:/Users/Student/Downloads/64275621201225329PM1227809791%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)(?61) 
pre calc
You have a sample of a certain radioactive substance. After two days, thirty percent of the sample has decayed. What is the halflife of the material and how much will have decayed after a week? 
Social Studies
@asexualandfailingschool (about your name) same 
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^25x+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 ... 
precalc
2x+1 greater than or equal to x3 
Precalc
I trust Steve 
Precalc
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? 
precalc
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? 
precalc
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? 
precalc
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 
PreCalc
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 ... 
precalc
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? 
precalc
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 ... 
Precalc
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