Thursday

November 26, 2015
**math **

Find the z-score such that the area under the standard normal curve to the left is 0.53.
*Monday, October 12, 2015 by bee*

**Math**

During a soccer game, Erin scorded 1 out of 2 goals attempted. Lauren scored 6 out of 8 goals attempted. write the fraction that represents each and compare who was the most successful I think it was lauren because Erin only hit half and Laurn hit more than half
*Monday, October 12, 2015 by AABBCC*

**Math**

1 over 8 to the 9th power
*Monday, October 12, 2015 by Student 1*

**Math**

a. Do some research and find a city that has experienced population growth. Determine its population on January 1st of a certain year. Write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a period of ...
*Monday, October 12, 2015 by Cozy*

**Math **

Simplify the expression 9 + 10h + -5h = 0 Please show steps
*Monday, October 12, 2015 by Jason*

**Math **

I'm not the best at math 88% B+ But can you check my work 1 which statement is true 29/35<20/30 18/34>16/32<--- 14/21>17/24 20/15<28/23 3. 4^2-(2x2^4) -16<--- 30 -240 224 4. (-2)^2 -8<-- -6 8 6 5. 37x5^2-9x4^2 9,472 781 256 2,816<--- 6. write 1,340 ...
*Monday, October 12, 2015 by Deez Got Hee*

**Math**

1. Is the equation true, false, or open? 5x+2=6x+11 a. Open; there is a variable b. True; the expressions are the same for all values of the variables c. False; the expressions are never the same 2. Which equation is an identity? a. 8-(5x+2)=-5x-6 b. 7z+10-z=8z-2(z-5) c. 8m-4=...
*Monday, October 12, 2015 by Shaghayegh*

**Math 208 (Linear)**

a person purchased a $142,819 home 10 years ago by paying 15% down and signing a 30-year mortgage at 10.5% compounded monthly. Interest rates have dropped and the owner wants to refinance the upaid balance by signing a new 15-year mortgage at 6.3% compounded monthly. How much ...
*Monday, October 12, 2015 by James*

**Math**

Height of a Projectile. The height of a projectile is described by the equation: s(t)=144t-16t^(2) Where t is in seconds and s(t) is the height of the projectile at time t. Find when the projectile hits the ground.
*Monday, October 12, 2015 by Ashley*

**Math**

A, find domain each function, locate any intercept, also based on graph find the range and ? F(x) 2x of x not equal to zero
*Monday, October 12, 2015 by Abel*

**math functions**

what is f(x) - g(x) when f(x)=3x-3 and g(x)=x^2-4
*Monday, October 12, 2015 by anne*

**Math**

Find two consecutive even integers such that the sum of the larger and 3 times the smaller is 234. I don't get how to put it as in equation.
*Monday, October 12, 2015 by Ally*

**Math**

Solve the following equation u+2=4 The question for me is how do I solve these types of problem. I already know that u=2, but I need to know the steps to get to the answer. Thanks, Kaai97
*Monday, October 12, 2015 by Kaai97*

**Math Decimals**

Jason has 4 tiles. Each tile has a number printed on it. The numbers are 2,3,6, and 8. A decimal number is formed using the tiles and the clues. Be a math detective and find the number. Clues: digit in tens place is the greatest number. digit in tenths is less than the digit ...
*Monday, October 12, 2015 by Ana*

**math**

Rebecca has a lanyard that is 16.4 inches long. She cuts the lanyard in 3.5 inch pieces. How many whole pieces did she cut?
*Monday, October 12, 2015 by Jaime*

**Math**

Which equation has no solution? a. 3x-5=3x+8-x b. 4y+5=4y-6 c. 7z+6=-7z-5
*Monday, October 12, 2015 by Kaai97*

**math **

Could someone please show me what I did worng in my math questions? any help will be greatly appreciated! I put my teachers response under the questions 4. Solve: 5|2x + 1 | = 55 Divide both side by 5: |2x+1|=11 2x+1=11 and 2x+1= -1 +1 +1 +1 +1 2x = 12 2x = -10 X=5 x=-6 What ...
*Monday, October 12, 2015 by Abby *

**Math**

Which equation is an identity? a. 8-(5x+2)=-5x-6 b. 7z+10-z=8z-2(z-5) c. 8m-4=5m+8-m d. 6y+5=6y-5
*Monday, October 12, 2015 by Kaai97*

**Math**

/ - fraction sign, not a division sign Solve the following equation -4=7/33x a. x=132/7 b. x=-132/7 c. x=-7/132 d. -33/28
*Monday, October 12, 2015 by Kaai97*

**Math**

Is the equation true, false, or open? 5x+2=6x+11 a. Open; there is a variable b. True; the expressions are the same for all values of the variables c. False; the expressions are never the same
*Monday, October 12, 2015 by Kaai97*

**math**

The scale for a map says that 1 cm is equal to 25 miles. Jennifer measures the distance between two cities as 4.5 cm. How far apart are the cities?
*Monday, October 12, 2015 by kj*

**Math**

1.)What is the difference between I-3I & -3?
*Monday, October 12, 2015 by Douglas*

**math**

Find the absolute maximum and the absolute minimum value, if any of: f(x)= (-1x^2/8)+4x+3 on the interval (0,9)
*Monday, October 12, 2015 by Michelle*

**algebra 2**

what is the domain in interval notation when the restrictions are x cannot = 2 and x cannot = -2? I got (-infinity, 2) U (2,-infinity) (-infinity, -2) U (-2, infinity) but my math teacher marked this as wrong
*Monday, October 12, 2015 by marcus*

**Math**

Find the absolute maximum and the absolute minimum value, if any of: f(x)= -1x^2/8+4x+3 on the interval (0,9)
*Monday, October 12, 2015 by Michelle*

**math**

is X cubed symmetric about the x-axis, Y axis, the origin, or none?
*Monday, October 12, 2015 by danielle*

**Math Pre-Algebra HELP**

1. Point E (0,-2) is a vertex of square DEFG. After a 90° clockwise rotation of the square about the origin, which of the following is the location of E ? A) (-2,0) B) (2,0) C) (2,2) D) (0,2) 2. Point is a vertex of triangle D(-3,5). After a rotation of the triangle about ...
*Monday, October 12, 2015 by my name is A*

**math **

A ball is dropped from the roof a building which is 256 m high. The height h of the ball at any instant t is described by h(t) = – 16t2 + 256 Find i) Instantaneous velocity of ball at t = 3 seconds ii) The time taken by ball to reach the ground level.
*Monday, October 12, 2015 by malik*

**daffodils grammer school**

Math The mass of 3dictionaries and 2textbook is 8kg
*Monday, October 12, 2015 by alihaider*

**anonymous**

In a class 80% students passed in sst ,85% in math ;75%in both subjects .if 40%students failed in both subjects .tell total number of students
*Monday, October 12, 2015 by Anonymous*

**math**

does a horizontal line represent function?
*Monday, October 12, 2015 by brooke*

**math**

the coordinate (2 -4) is located in which quadrant in the coordinate plane
*Monday, October 12, 2015 by brooke*

**Math**

Vehicle can travel 0-60mph in 7.6 sec. From a dead stop, what is the highest rate of speed vehicle can reach and decelerate to 10mph in 500 ft distance?
*Monday, October 12, 2015 by Robin*

**math**

A car can travel 436 miles on 17 gallons of gas. How far can it go on 22 gallons of gas?
*Monday, October 12, 2015 by lee*

**math**

Suppose I have 8 coins.4 of them have heads on both sides and the other 4 have tails on both sides. I reach in and get 4 coins at one time. What's the probability that I get 2 head coins and 2 tails? Well I was thinking that it would be 1/2 since both heads and tails have ...
*Monday, October 12, 2015 by nyiema*

**math**

Could someone please check my math questions? any help will be greatly appreciated! Questions~ 16. A car’s speed before a sudden stop can be estimated by the formula S = √(30gk) , where S = speed of the car in mph, g = drag factor, and k = length of skid mark in ...
*Monday, October 12, 2015 by Abby *

**math**

For every 3 classes in the intermediate grades, there are 5 teachers. How many teachers are there for 15 classes.
*Monday, October 12, 2015 by franz*

**math **

Ms. Handler walks to work at an average speed of 5 kilometers per hour. If she increases her speed to 6 kilometers per hour, she will save 10 minutes. Find the distance she walks.
*Monday, October 12, 2015 by Rob *

**math**

find tha equation of a line which is parallel to the line 2x-3y=8 whose y-intercept is 5 units
*Monday, October 12, 2015 by slopes *

**math**

Find conditions on k that will make the following system of equations have a unique solution. To enter your answer, first select whether k should be equal or not equal to specific values, then enter a value or a list of values separated by commas. Then give a formula in terms ...
*Monday, October 12, 2015 by Excel*

**Math**

Find a polynomial p of degree 3 so that p(4) = 5, p(−1) = 5, p(−3) = −37, p(2) = −7, then use your polynomial to approximate p(1). p(x) = 0 p(1) = 0
*Sunday, October 11, 2015 by Excel*

**math**

a flower bed is in the shape of a triangle with one side twice the length of the shortest side, and the third side is 11 feet mre then the length of the shortest side. find the dimmenstions if the perimter is 163feet
*Sunday, October 11, 2015 by Anonymous*

**Stats**

About 10% of the population of a large country is math phobic. If two people are randomly selected what is the probability both are math phobic? And hat is the probability that at least one is math phobic? Any way to do this on stat crunch?
*Sunday, October 11, 2015 by Michelle*

**Math**

There are 2015 people from universities across the country, all sitting around a massive table. Each person belongs to one of four groups: students, professors, deans and presidents. Students hate professors, and will never sit next to them. Likewise for presidents and deans. ...
*Sunday, October 11, 2015 by Tianna*

**math**

If a door measures 78in tall by 35in wide will an entertainment center measuring 60in x 48in x 48in fit through it? Im not even sure where to start!
*Sunday, October 11, 2015 by brandy*

**math**

My 10 digit double the one digit I am less than 50 and greater than 40
*Sunday, October 11, 2015 by Paul*

**math**

i need help please...what is 5,602 minus 2,344 estimated
*Sunday, October 11, 2015 by maria*

**Math**

2(x+4)^2=6
*Sunday, October 11, 2015 by John Doswell*

**Math**

Need help on writing a system of equations. I can figure it out without the systems but now sure how to write a systems of equations not knowing how many the box can hold. Dark chocolates cost $0.25 each and milk chocolates cost $0.15 each. Tom wants twice as many dark as milk...
*Sunday, October 11, 2015 by Brandi*

**math**

if a 3 gram French fry accelerating at 5 meter's per second. what is he fries force?
*Sunday, October 11, 2015 by joel*

**math**

A photograph has been enlarged to three times its previous size. By what percentage has the size of the photograph increased?
*Sunday, October 11, 2015 by Anonymous*

**Math**

h(x)= 2x+5 and g(x)= 8-3x. What is the value of h(g(1.5))? I got the h(g)1.5))=7.5 I know its incorrect but need some help on it.
*Sunday, October 11, 2015 by John Doswell*

**math**

Could someone please check my math questions? any help will be greatly appreciated! 4. Solve: 5|2x + 1 | = 55 Divide both side by 5: |2x+1|=11 2x+1=11 and 2x+1= -1 +1 +1 +1 +1 2x = 12 2x = -10 X=5 x=-6 What my teacher said was wrong~~ 2x+1=11 and 2x+1= -11 YES, for both of ...
*Sunday, October 11, 2015 by Abby *

**Math (pre Algebra)**

The perimeter of a rectangle picture frame is 30 inches. The length of the frame is three less than twice the width. What are the dimensions of the frame? I know that the perimeter is 30 in., the length is 2w-3, and the width is w, but I don't know what to do after that?
*Sunday, October 11, 2015 by Zoe *

**math **

Could someone please check my History questions? Any help will be greatly appreciated! My answers are under the question... 3) Which of these would have been MOST likely to take the Oregon Trail? A) Native Americans migrating from the east B) Americans trying to settle on the...
*Sunday, October 11, 2015 by Abby *

**math**

a diver jumps from a platform at time t=0 seconds. the distance of the diver above water level at time t is given by s(t)=-4.9t^2 +4.9t+10, where s is in meters c.) find when velocity equal zero. find the maximum height of the diver thank you
*Sunday, October 11, 2015 by jelloh*

**Science/math**

Newtons second law of motion states that F =MA Force equals mass multiplied by acceleration. Mass is the constant. It does not change. What is the independent and dependent variable? I put force is independent and acceleration is dependent. Is that right?
*Sunday, October 11, 2015 by Katie*

**Math probability**

Lottery tickets are held by 56 men and 84 women. An equal percentage of men and women are older than 55. If there are 8 men over 55, what is the probability that the lottery winner will be either man of any age or a women over 55 years old.
*Sunday, October 11, 2015 by ER*

**math**

I am between 20 and 30. When you put me into 5 equal groups, there is an odd number in each group and one is left over. what number am I?
*Sunday, October 11, 2015 by robert*

**math**

The ratio of the number of cats to the number of birds at the shp is 2 : 5. The ratio of the number of birds to the number of birds to the number of rabbits is 1:3. What is the ratio of the number of cats to the number of birds to the number of rabbits. If there are 30 rabbits...
*Sunday, October 11, 2015 by lene*

**Math,english,agric,b/sci,PHE,computer,etc**

The sum of two consecutive numbers 122.what is the number
*Sunday, October 11, 2015 by Awajigbanam*

**Math**

Are 5^2+10^2-2*5*10 cos50° and 5^2+10^2-2*5*10 cos130° equal to 7.8 and 13.7?
*Sunday, October 11, 2015 by Anonymous*

**Math**

School is 2 miles from home along a straight road. The table shows your distance from home as you walk home at a constant rate. Time(mins): 10-20-30 Distnce(mi)1.5-1-0.5 1)Is the relationship in the table proportional? 2)Find your distance from school fro each time in the ...
*Sunday, October 11, 2015 by Tim*

**Math (algebra)**

how do u turn .235 into a fracton with a bar over the 35 ?
*Sunday, October 11, 2015 by Samantha Melendrez*

**optional math**

In the given figure, ABCD is a trapezium where AB // DC. P & Q are the midpoints of AC & BD. Prove that: Vector PQ= 1/2(Vector AB - Vector DC).
*Saturday, October 10, 2015 by math*

**math**

Use implicit differentiation to find dz/dx if 𝑒^z = 𝑥𝑦𝑧
*Saturday, October 10, 2015 by Megameno*

**math**

A commuter has 245 in his commuter savings account. This Account changes by 15 dollars each week he buys a ticket. If the account changed by 240 for how many weeks of tickets did the commuter buy. If the commuter wants to buy 20 weeks of tickets how much mus he add to his ...
*Saturday, October 10, 2015 by Yolanda*

**Math **

There are 2015 people sitting at a table, each person belongs to one of the four group: student,professors, presidents and deans. Students hate professors, and will never sit next to them. Likewise for presidents and deans. Explain why, in every possible seating, there must be...
*Saturday, October 10, 2015 by Tianna*

**math**

Need help figuring out what is the largest amount: 3000 c 400 pt 250 qt 500 gal
*Saturday, October 10, 2015 by Paul*

**Math**

Question: You are making balloon arrangements for a birthday party. There are 16 white balloons and 24 red balloons. Each arrangement must be identical. What is the greatest number of arrangements you can make using every balloon.
*Saturday, October 10, 2015 by Anon*

**Math-Sorry I had a mistake in the first problem.**

Please check my work: Label the dependent and independent variable. 1. Time spent studying and Score on a test 2. If a scientist conducts an experiment to test the theory that a vitamin could extend a person's life expectancy. What are the dependent and independent ...
*Saturday, October 10, 2015 by Katie*

**math**

1.)The difference of two natural number is 6, and the diffrence of their reciprocals is 1/36. Find the two numbers. 2.)In a river, ben found out that he could go 16miles downstream and then 4miles back upstream in a total of 48mins. What was the speed of Ben's boat if the ...
*Saturday, October 10, 2015 by Ange Ords*

**math**

60 is 166 2/3% of what number?
*Saturday, October 10, 2015 by Jake*

**Math**

In a figure, the radius of the inner circle of the tire is twice the width of the tire itself. To the nearest integer, what percent of the entire area is the area of the tire? My teacher told me the answer is 56%, by rounding the 55.5555...., but I don't understand how to ...
*Saturday, October 10, 2015 by Jackson*

**MATH**

You would like to construct a 400-square-foot rectangular garden along your driveway. The fencing on the driveway side costs $15 per linear foot, while the fencing for the other three sides costs $8 per linear foot. Write an expression for the cost of the enclosed rectangular ...
*Saturday, October 10, 2015 by TAN*

**Math**

which expression is equivalent to 4*4*4*4*4*4*4*4
*Saturday, October 10, 2015 by john*

**Math-6/7**

Eli purchases a container of punch that when mixed with water, makes 640 ounces of punch. Eli has 8 ounce drinking glasses. She assumes that each person will drink 2 glasses of punch. How many people can be served with one container if punch? I said 640 divided by 8 equals 80 ...
*Saturday, October 10, 2015 by Versace*

**math**

Of the set -5,,5,-3,8 which two numbers have the same absolute value?
*Saturday, October 10, 2015 by tracy*

**math**

Of the set -5,,5,-3,8 which two numbers have the same absolute value? explain
*Saturday, October 10, 2015 by tracy*

**Math**

Eli has two 8 1/2 pounds of bags of mints. She plans to put 1/2 at each place setting. Will she have enough mints?
*Saturday, October 10, 2015 by Sammy*

**Math Calculus**

Postal regulations specify that a package sent by certain shipping methods may have a combined length and girth of no more than 99 inches. Find the dimensions of a CYLINDRICAL package with the greatest volume that may be sent by this shipping method. HINT* the length plus the ...
*Saturday, October 10, 2015 by Heather*

**math**

when a third of a certain number is added to 8,the result is more than 10.what is the number?
*Saturday, October 10, 2015 by amadu*

**MATH!**

Which of the following appears to be an irrational number? A. 3.72727272 B. ã64 C. -6/25 (Fraction) D. .073303330 I think D maybe, but I have no clue
*Saturday, October 10, 2015 by Taelynn*

**Math**

In a favorable habitat and without natural predators, a population of reindeer is introduced to an island preserve. The reindeer is introduced, F(t), t as the year after their introduction is modeled by the poly function F(x)=-0.125t^5+3.125+4000. 1. What is used to model ...
*Saturday, October 10, 2015 by Fox*

**math**

jessie uses 20 liters of gasoline to travel 200 kilometers,how many liters of gasoline will he uses on trip of 700 kilometers?give the direct solution
*Saturday, October 10, 2015 by jenyrose loberanes*

**math**

show that if w is continous on [0,1] and integral wv on [0,1] equal zero then w(x)=0 for x in [0,1]
*Saturday, October 10, 2015 by assma*

**Math**

A parallelogram has an angle of 50 degs and sides of 5 and 10 inches. What are the lengths of the diagonals? Round each to the nearest tenth of an inch.
*Saturday, October 10, 2015 by Anonymous*

**Math**

Create a number puzzle with a two-step equation.
*Friday, October 9, 2015 by J.J.*

**math**

If you know that a relationship is proportional and are given one ordered pair that is not (0,0), how can you find another pair? THANK YOU!
*Friday, October 9, 2015 by kimie*

**math**

identify all of the basic trig functions that fit each description. 1) is negative for angles in the 2nd and 4th quadrant 2) is unbounded answer: tan, cot 3) has a range of -1 ≤ y ≤ 1 answer: sin, cos are my answers correct? and i'm not sure what the answer to ...
*Friday, October 9, 2015 by stewie*

**math**

Could someone please check my math questions? any help will be greatly appreciated! Questions~ 16. A car’s speed before a sudden stop can be estimated by the formula S = √(30gk) , where S = speed of the car in mph, g = drag factor, and k = length of skid mark in ...
*Friday, October 9, 2015 by Abby *

**math**

If 4x+5y=10, and 2x+3y=8, then 3x+4y
*Friday, October 9, 2015 by Marilo*

**Math / Statistics**

{ In a recent basketball game, a player who makes 65% of his free throws made eight consecutive free throws. Assuming that free-throw shots are independent, determine whether this feat was unusual. } I'm just a little lost on how to determine if it's unusual or not. I ...
*Friday, October 9, 2015 by Mira*

**Math**

A sc tourists bureau survey showed that 75 % of those who seek information about the state actually come to visit . The office received 8 requests for information. What is the probability that probability that 4 to 6 inclusive of the people will visit sc?
*Friday, October 9, 2015 by Melanie*

**Math**

Change the function below into standard form (y = a cos[b(x-h)]+k) then give the vertical shift. y = (cos[2x-π])/3 is this right: y = 1/3 cos[2(x-π/2)]+1/3 vertical shift: 1/3 up
*Friday, October 9, 2015 by Hannah*

**Math **

If a rock falls from a height of 50 meters on Earth, the height H (in meters) after x seconds is approximately H(x)=50-4.9x^2 1. What is the height of the rock when x=1.6 seconds? 2. When is the height of the rock 5 meters? 3. When does the ...
*Friday, October 9, 2015 by bo*

**math**

The hieght of a model rocket is 4% of the height of the actual rocket.The model is 1.8 meters high. How high is the actual rocket?
*Friday, October 9, 2015 by natalia*

**math**

A airplane crosses the Atlantic Ocean (3000 miles) with an airspeed of 600 miles per hour. The cost C (in dollars) per passenger is given by... C(x)= 150 + x/20 + 36,000/x Where x is the ground speed (airspeed plus or minus wind). a. What is the cost per passenger for ...
*Friday, October 9, 2015 by v*

**Math**

1. You are having a discussion about sequences with your classmate. She insists that the sequence 2,3,5,8,12 must be either arithmetic or geometric. Is she correct or incorrect? Explain. Can you help please 2. Determine whether the sequence is arithmetic, geometric, both, or ...
*Friday, October 9, 2015 by May*

**math**

The sum of the ages of Jose and Valerie is 78 years. 9 years ago, Jose's age was 3 times Valerie's age. How old is Jose now? (A) Translate the given information into an equation using the variable x = current age of Jose. Your equation should contain 78, 3, and 9. Do ...
*Friday, October 9, 2015 by Anonymous*