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October 23, 2014

Homework Help: Math

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Recent Math Questions

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Math please help
Simplify & write the answer using positive exponents: 1. (3^3)(3^-6) 2. S^2 t^-1 / (s^4 t^4)^1/2 Simplify then evaluate, express answer to 4 decimal places where nessasssary : 3. [(2/3)^2]^-3 4. [(1-4)^-3 Divide (1/4)^2]^-2
Tuesday, September 23, 2014 at 9:47pm

MATH ASAP!!
Rationalize the denominator using the conjugate. 1/1-√7+√5 please show all the steps and explain it
Tuesday, September 23, 2014 at 9:18pm

Math
A new set of car tires has a tread depth of 8 millileters. The tread depth decreases 0.12 millimeter per thousand miles driven. Write an equation that gives the tread depth as a function of the distance driven. Then predict what distance the tread depth will be 2 millimeters....
Tuesday, September 23, 2014 at 9:11pm

Math
Fern rounded to the nearest ten to estimate 548-132. She subtracted 540-130=410. Is Fern's estimate correct? Explain.
Tuesday, September 23, 2014 at 8:57pm

Math
Simplify and write the answer using positive exponents : 1. (3^3)(3^-6) 2. S^2 t^-1 / (s^4 t^4)^1/2 3. [(2/3)^2]^-3
Tuesday, September 23, 2014 at 8:57pm

math
The partial derivative with respect to y for z=e^y sin(xy) is: zy= xe^y cos(xy) + e^y sin(xy) How do i get to this answer? Thanks.
Tuesday, September 23, 2014 at 8:40pm

math
A box of 20 Crunchy Munchy cookies costs $2.50 and a box of 40 Crunchy Munchy cookies costs $4.00. One quart of milk costs $1.50. Which of the following options costs less?
Tuesday, September 23, 2014 at 8:34pm

math
Rationalize the denominator using the conjugate. 1/1-√7+√5 please show all the steps and explain it i dont get it
Tuesday, September 23, 2014 at 8:08pm

math
A recipe for fruit salad serves 4 people. It calls for 2 oranges and 16 grapes. You want to serve 10 people. How many oranges and how many grapes will you need?
Tuesday, September 23, 2014 at 8:02pm

Math
So she saw 461 dolphins that are 5 year so we don't need to estimate on this problem. So I did 461/5 is 92 is the answer. Then the said how many did he spot per summer in the 5 summers he worked so I think we need to divide the answer which is 92 and the 5. 92/5 18 is your...
Tuesday, September 23, 2014 at 7:51pm

Math
Pizza cost $1.50per slice. Use a table and an equation to represent the relationship between the number of slices of pizza bought and the total cost?
Tuesday, September 23, 2014 at 7:49pm

Math
If a dozen items are divided into two equal groups how many will be in each group explain how you know
Tuesday, September 23, 2014 at 7:49pm

math
Becky a saleswoman,is offered two salary plans. Plan 1 is $450 per week salary plus a 3% commission of sales. Plan 2 in a $300 per week salary plus a 16% commission of sales.How much would Becky need to make in sales for the salary to be the same from both plans?
Tuesday, September 23, 2014 at 7:48pm

Math
Find two numbers the exact answer is between 6x7381
Tuesday, September 23, 2014 at 7:38pm

math
A telephone long-distance carrier charges customers $0.99 for the first 20 minutes and then $0.06 for each minute(or any part thereof) beyond 20 minutes. If Mary uses this carrier,how long can she talk for $4.00? I started off with 0.99x+20+0.06x=4.00. PLEASE help, I dont ...
Tuesday, September 23, 2014 at 7:24pm

math
In my homework it says to put 1,3,4,and 8 to equall 18 only using the symbols +.-,x, and ( ). What is the answer to that?
Tuesday, September 23, 2014 at 7:04pm

math
12.5% =.125=125/1000 or 12 5/10=12 1/2 m confused
Tuesday, September 23, 2014 at 7:02pm

math
A class has 6 boys and 15 girls what is the ratio of boys and girls
Tuesday, September 23, 2014 at 6:48pm

Math
Find a unit vector in the direction of(1/2, 1/2, 1/2).
Tuesday, September 23, 2014 at 6:38pm

math
Jim is painting a new shed . If 1/5 of a gallon of paint covers 2/25 of the shed , how many gallons of paint would be needed to paint 4 sheds of that size?
Tuesday, September 23, 2014 at 6:15pm

Math
5y^3 ( -x^4) When x is -2 and y is -1
Tuesday, September 23, 2014 at 6:11pm

Math
Write an inequality for each statement The product of 2/3 and x is no more than -16 2/3x ≤ -16
Tuesday, September 23, 2014 at 6:07pm

Math
The quotient of a number and 15 is at least 3 n/15 ≥ 3
Tuesday, September 23, 2014 at 6:06pm

Math
Write an inequality for each statement The product of a number and -4 is at most 24
Tuesday, September 23, 2014 at 6:03pm

2nd grade math
A number has more ones than tens. the value of the tens digit is 50. the ones digit in the number is less than 7. what are the possible numbers
Tuesday, September 23, 2014 at 5:58pm

math
Changing decimal to percent .123=12.3%=12 3/10 ??
Tuesday, September 23, 2014 at 5:55pm

math
The school cafeteria serves pizza every 6th day and applesauce every day Thursday supposed to pizza and applesauce are both on today's menu in how many days will they be together on the menu again?
Tuesday, September 23, 2014 at 5:53pm

math
3×/4+11=22-5 3×/4+11-11=22-5-11 3×/4=6 (4) 3×/4=6 (4) 3×=24 /3=24/3 ×=8 correct... 3(8)/4+11=22-5 24/4+11=17 6+11=17 17=17 Nevermind :)
Tuesday, September 23, 2014 at 5:51pm

math
solve x+2=2x+1
Tuesday, September 23, 2014 at 5:48pm

Math
A farmer raises chickens and goats. She knows she has 22 animals all together. All together her animal has 56 feet. how many of each type of animal does she have?
Tuesday, September 23, 2014 at 5:47pm

math
If the coordinates of points A and L are -4 and 8, respectively, then the midpoint between them has a coordinate of____ A- 0 B- 2 C- 4 D- 6 Please help me understand this!
Tuesday, September 23, 2014 at 5:46pm

math
The amount of paint an electric paint sprayer applies varies directly with time. A sprayer is set to apply 0.5 gallon in 2.5 minutes. Write an equation that gives the amount P of paint as a function of the time T. How much paint is applied if the sprayer is operated for 20 ...
Tuesday, September 23, 2014 at 5:46pm

Math
Felix wants to get at least one hour of exercise each day Today he has run for 40 minutes. Write an inequality to show how much longer he needs to exercise to reach his goal 40+e≥ 60 e≥ 20
Tuesday, September 23, 2014 at 5:45pm

Math
Waynes homework is to solve at least 20 questions from his textbook so far he has completed 9. Write an inequality to show how many more he needs to complete 9+q ≥ 20 q ≥ 11
Tuesday, September 23, 2014 at 5:44pm

Math
A satellite will be released into an orbit of more than 400 miles above the earth. the rocket is carrying it is currently 255 miles above earth write and solve an inequality to show how much higher the rocket must climb before it releases the satellite 255+m>400 m>145
Tuesday, September 23, 2014 at 5:43pm

Math
sumiko is allowed to watch no more than 10 hours of televisione ach week she has watched 4 hours of television already. write and solve an inequality to show many more hours of television sumiko can watch 10≤4+h
Tuesday, September 23, 2014 at 5:35pm

Math
If 1/3 is equal to 2/6 how come my teacher says it is equal to 5/8?
Tuesday, September 23, 2014 at 5:31pm

math
any number that can be expressed as the ratio of 2 integers a/b, where b does not equal 0, is a rational number
Tuesday, September 23, 2014 at 5:29pm

MATH-Help!
A new set of car tires has a tread depth of 8 millileters. The tread depth decreases 0.12 millimeter per thousand miles driven. Write an equation that gives the tread depth as a function of the distance driven. Then predict what distance the tread depth will be 2 millimeters....
Tuesday, September 23, 2014 at 5:28pm

math
2a÷4=3 .....is this answer correct: 2a=3×4 2a=12 2a÷2=12÷2 a=6
Tuesday, September 23, 2014 at 5:18pm

Math
Jasmine has 8 pack of candle wax to make scented candles. Each pack contain 14ounces of wax. Jasmine uses 7 ounces of wax to make one candle . How many candles can she make
Tuesday, September 23, 2014 at 5:10pm

math
A pair of intersecting planes ______ intersect in exactly one point? A- always B- sometimes C- never D- not enough information I think A- always, but I do not know for sure.
Tuesday, September 23, 2014 at 5:02pm

math
Samy bought 5 1/3 lb of apples to make some apple pie. What is the weight of the apples written as a decimal?
Tuesday, September 23, 2014 at 4:37pm

Math
Find the standard deviation for the given data. Round your answer to one more decimal place than the original data. 15, 42, 53, 7, 9, 12, 14, 28, 47 A. 29.1 B. 16.6 C. 17.8 D. 15.8 is it C
Tuesday, September 23, 2014 at 4:11pm

Math
Explain how to use hundredths grids to subtract 1.65 - 0.98.
Tuesday, September 23, 2014 at 3:35pm

Math
Show that the set [(3,-2,4),(1,2,-1), (-6,4,-8) is linearly dependent by writing a non-trivial liner combination of the vectors that equals the zero vector. After some calculations I got t1=2, t2=0 and t3=1, but its my understanding that if a set is dependent, none of the t&#...
Tuesday, September 23, 2014 at 2:59pm

math
the expression that is equivalent to -2(x - 7).
Tuesday, September 23, 2014 at 2:57pm

Math Algebra
At a shoe store, a salesman earns a weekly salary of $150. A salesperson is it also paid 2$ each pair of shoes he or she sells during the week.
Tuesday, September 23, 2014 at 2:52pm

Math
The sine ratio is positive in the first and what other quadrant?
Tuesday, September 23, 2014 at 2:43pm

Math
In an examination, 1/5 of the candidates failed. It is known that 240 candidates passed. How many candidates took the examination
Tuesday, September 23, 2014 at 2:37pm

Math
In a test a student scored 51 marks out of 80. Express his mark as a percentage to the nearest whole percent
Tuesday, September 23, 2014 at 2:24pm

Math
1/5 of the people in a village have been inoculated against measles. If 50 people have been inoculated, what is number of people in the village.
Tuesday, September 23, 2014 at 2:21pm

Math
Bricks have a mass of 1.57 kg each. How many bricks are there in 5whole number 1/4tonnes ?
Tuesday, September 23, 2014 at 2:17pm

math
The Sandersons are planning to refinance their home. The outstanding principal on their original loan is $100,000 and was to amortized in 240 equal monthly installments at an interest rate of 11%/year compounded monthly. The new loan they expect to secure is to be amortized ...
Tuesday, September 23, 2014 at 1:55pm

Math
Two wires are connected to a tower at the same point on the tower. Wire 1 makes an angle of 45° with the ground and wire 2 makes an angle of 60° with the ground. b) Which wire is longer? Explain. (2 marks) c) If the point where the two wires connect to the tower is 35 ...
Tuesday, September 23, 2014 at 12:58pm

math
The wave heights h in the open sea depend on the speed v of the wind and the length of time t that the wind has been blowing at that speed. Values of the function h = f(v, t) are recorded in feet in the following table. the values that you need on the table are.. 20hr/30 knots...
Tuesday, September 23, 2014 at 12:58pm

Math
The expression cos 60° is equivalent to sin ?
Tuesday, September 23, 2014 at 12:58pm

math
-5 an 7/12 divided by 12 equals
Tuesday, September 23, 2014 at 12:39pm

math
a radio uses one-third the number of watts used by lamp, and a heater that uses 15 times as many watts as a lamp. when all are in use, the total electrical power is 1.1 kilowatts how many does the radio use?
Tuesday, September 23, 2014 at 12:38pm

Math Help
Choose the word phrase that can be represented by 2 – p. the difference of a number p and 2 the quotient of 2 and a number p 2 more than a number p 2 decreased by a number p 2. Which word phrase could represent the variable expression 1/2a + 4? 4 more than half Chris’...
Tuesday, September 23, 2014 at 11:17am

math
"Just look at the graph," the player's agent said. "Phil's hits have doubled since last year. We are looking for a large raise and a long contract." Look at the graph. Graph: i.imgur. com/wY0gqtQ.png How can you redraw this graph so it appears that ...
Tuesday, September 23, 2014 at 8:31am

math
Which number of players can be arranged in the shape of square?
Tuesday, September 23, 2014 at 7:24am

math
The least common multiple of two numbers is 60 and one of the numbers is 7 less than the other number. What are the numbers? Justify your answer.����
Tuesday, September 23, 2014 at 1:46am

Math
Solve the given quadratic equation exactly using the quadratic formula. Write the solutions in its simplest form. Using a calculator, determine all irrational solutions to the nearest thousandth. Separate the solutions with a comma and list the smaller one first. For the ...
Tuesday, September 23, 2014 at 1:19am

math
What are the coordinates of the reflection of (a, b) over the y-axis?
Tuesday, September 23, 2014 at 1:16am

Math
Solve the given quadratic equation exactly using the quadratic formula. Write the solutions in its simplest form. Using a calculator, determine all irrational solutions to the nearest thousandth. Separate the solutions with a comma and list the smaller one first. For the ...
Tuesday, September 23, 2014 at 1:01am

Math
27 3 5 2 = 19 I am trying to determine what symbol I need between each number to make the sentence true. +, - X or / I am not clear if I can use the same symbol multiple times in the equation.
Monday, September 22, 2014 at 11:24pm

math
A metal sphere has a mass of 1 kg. 1 cubic centimeter of this metal has a mass of 4.8 grams. find the radius. how do you work this out?
Monday, September 22, 2014 at 11:10pm

math
Explain why and when we would need to use LCM and GCD? Share, describe and summarize 4 examples of both.
Monday, September 22, 2014 at 11:05pm

math
Alba asked why we don't talk about LCM and GCM. How do you answer?
Monday, September 22, 2014 at 10:56pm

math
what are 3 fractions that have the same product when multiplied explain you answr
Monday, September 22, 2014 at 10:22pm

Math
How do I calculate this problem? Add the operation signs and parentheses where needed. The number are 6 , 5 , 9 and 2 that equal 77 .
Monday, September 22, 2014 at 10:21pm

Math
using four different digits, what is the least sum you can get when you add two 2-digit numbers? Write your problem
Monday, September 22, 2014 at 10:19pm

math
ann takes a taxi at 2.10 per mile and she gives the driver a 5.00 tip she spend a total of 49.10 write an equation to represent total cost in terms of distance
Monday, September 22, 2014 at 10:17pm

math
Marianne buys 16 bags of potting soil that comes in 5/8 pound bags a.how many pounds of potting soil does she buy? b. if her father calls and says he needs 13 pounds of potting soil, how many additional bags should she buy?
Monday, September 22, 2014 at 10:16pm

math
use the digits 3,5 and 7 to make two three-digit number with the greates possible sum.
Monday, September 22, 2014 at 10:10pm

Math
The Hotel Regal has 600 rooms. Currently the hotel is filled . The daily rental is $ 250 per room. For every $ 4 increase in rent the demand for rooms decreases by 4 rooms. Let x = the number of $ 4 increases that can be made. What should x be so as to maximize the revenue of ...
Monday, September 22, 2014 at 10:00pm

math
he sales goal for your store this week is $22,682. The sales goal for your store this week last year was $20,128. Your store has averaged 1775 transactions per week for the last four weeks. What is the percent change in your sales goal from this week last year to this week ...
Monday, September 22, 2014 at 9:55pm

math
If the sun is aplroximantely 1.5×10^(11) meters from Earth, what is the approximate distance from Earth to Mars.
Monday, September 22, 2014 at 9:31pm

math
A turtle starts moving north at 4 feet per minute from a point P. Five minutes later, a snail starts moving south at 2 feet per minute from a point 50 feet due east of P. What is the distance (in feet) between the two animals five minutes after the snail starts moving?
Monday, September 22, 2014 at 9:19pm

Math
Sara has some fish, 2 birds, and 5 hamsters. She has 6 fewer hamsters than fish. How many fish does she have?
Monday, September 22, 2014 at 8:55pm

Math
Maira drives at a constant speed for 3 hours and travels 175 miles. how far would she drive in 4.5 at the same speed?
Monday, September 22, 2014 at 8:54pm

Basic math question
Evaluate the square root of 9604 using prime factorization
Monday, September 22, 2014 at 8:38pm

math
Bella had 1/3 of a wall to paint.she painted 1/4 of what was left green and 1/2 yellow.what is the area of the region Bella.has not yet painted?
Monday, September 22, 2014 at 8:38pm

Math
A stack of 33 CDs is 1.5 inches high. How many CDs would be in a stack that is 3.5 inches high?
Monday, September 22, 2014 at 8:34pm

math
The Least Common Multiple of two numbers is 60, and one of the numbers is 7 less than the other number. What are the numbers? Justify your answer.
Monday, September 22, 2014 at 8:09pm

Math
Add the operation signs and parentheses where needed. 6 5 9 2 = 77
Monday, September 22, 2014 at 7:58pm

Math
A circus performer walks on a tightrope 25 ft above the ground. The tightrope is supported by two beams and two support cables. If the distance between each beam and base of its support cable is 15 ft, what is the length of the support cable?
Monday, September 22, 2014 at 7:48pm

math
estimate each square root to one decimal place Ex what is the square root of 15
Monday, September 22, 2014 at 7:47pm

Math
Explain how you can solve 8x8 if you know how to multiply with 4 but not how to multiply with 8.
Monday, September 22, 2014 at 7:29pm

Math
scott owns a manufacturing company that produces two models of entertainment centers. the athens requires 4 feet of fancy molding and takes 4 hours to manufacture. The barcelona needs 15 feet of molding and 3 hours to manufacture. In a given week, there are 120 hours of labor ...
Monday, September 22, 2014 at 6:53pm

math
(1,0) (3,4) (5,8) (7,12) what would be the output value when the input value is 12?
Monday, September 22, 2014 at 6:49pm

Math
Mount Baldy is the highest peak in the White Mountains of eastern Arizona. Its elevation is divisible by 3 and 9.Is the elevation 11,603;11,503;or 11,403 feet? Explain your answer,using the rules of divisibility.__________
Monday, September 22, 2014 at 5:59pm

Math
Aztec Peak in Arizona is the highest mountain in the Sierra Ancha Mountain Range. If the elevation of Aztec Peak is divisible by 2, is the elevation 7,963 or 7,964 feet? Explain your answer,using the rules of divisibility.______________
Monday, September 22, 2014 at 5:56pm

math
Daphne gave away 3 more than half her apples. She gave away 17 apples in all. how many apples did she have originally?
Monday, September 22, 2014 at 5:52pm

math
Add the operation signs and parentheses where needed. 6 5 9 2 = 77
Monday, September 22, 2014 at 5:51pm

Math
The movie theater donates 12% of its sales to chairty, From Cassie's purchases, the theater will donate at least $2.15 Which inequality below shows the amount of money m that Cassie spent at the refreshment stand A. m greather than or equal to 17.92 B.m less than or equal ...
Monday, September 22, 2014 at 5:50pm

math
Follow the order of operations and find the missing number: 20+5 x(?+6)-12/2=64
Monday, September 22, 2014 at 5:49pm

math
find the product of 27*60.then explain how you would use mental math to find the product of 27*600.
Monday, September 22, 2014 at 5:31pm

math
Meredith picked 4 times as many green peppers as red peppers. If she picked a total of 20 peppers, how many green peppers did she pick?
Monday, September 22, 2014 at 5:25pm

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