07/06/15

Number 28 help
2 cars leave the same place at the same time and travel in opposite directions. at the end of three hours they are 354 miles apart. if one travels 14 miles an hour faster than the other how many... more
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07/06/15

Maths Problem 4
4. A truck driver travels a certain distance at 60 km/hour per hour and returns over the same distance at 40 km/hour. What is her average speed for the entire trip?
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07/05/15

Simplify each power of i.
2i(5-1)^2      and      3(5+2i^3)-i(7i^2+4i)        im not sure how to simplify these.
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07/05/15

how do you ''switch out'' the answer in a problem like 54-n=36
54-n=36.    54-36=18     36-36=0.      18-n=0 Now how do you get that to switch to say n=18 instead of 0
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07/04/15

What is the multiple zero and multiplicity of f(x) = x^3 + 10x^2 + 25x?---
What is the multiple zero and multiplicity of f(x) = x3 + 10x2 + 25x?   Please and thank you!
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07/04/15

If you paid $24 for a DVD, but there was a 20% discount, how much did the DVD originally cost? (Start by setting up your equation with x as the unknown.)
im not sure what the equation would be! help please!
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07/04/15

135 rice bags,225 wheat bags to be stacked .each have same weight they are to be stacked such they are in same no. they take up least area
135 rice bags ,225 rice bags to be in retail outlet each bag has same weight they are to be stacked such that each has same number they take up least area what is the number of wheat bags that can... more
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07/04/15

probabiity
an experiment consists of selecting a card at random from 52 card deck, find the probability of the event.  A diamond or a king is drawn.  A red face card is drawn.
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07/04/15

Mathematics question help
If the average score of mathematics among 30 students is 8.4.If the smallest score is avoided,the average is 8.5.If the largest score is avoided,the average is 8.2.The range of the mathematics... more
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07/03/15

How do you factor x^2+8x+15?
The instruction is "factor each expression" and the expression is: x^2+8x+15.
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07/03/15

Divide. Express your answer in simplest radical form.
3√(-8a3b) / 3√(27b10)     This is so confusing to me, please help.
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07/03/15

A helicopter flies 168 miles against the wind in 2 hours; with the wind, it can fly 252 miles in the same time.
I need to find the speed of the helicopter in still air.
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07/02/15

If each dog eats three times as much as each cat, how much food would be needed to feed one meal to each 12 dogs and 20 cats?
An animal shelter uses 18 cups of food to feed 20 dogs and 12 cats one meal each.   I tried this, but I got 6. 6 is a wrong answer. Please help. Thank you!!
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07/02/15

What is her average speed, in miles per hour, for the entire trip?
When Lucy drives to her job, her average speed is 30 miles per hour. When she drives home from work by the same route, traffic is lighter, so her average speed is 45 miles per hour.    I tried... more
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07/01/15

solve problem
find two positive angles and two negative angles that are coterminal with the given angle.   115.3º
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07/01/15

How long will the passenger train take to catch up with the freight train?
Two trains are traveling on parallel tracks. One is a freight train and the other is a passenger train. The freight train travels at 25mph. If the freight train is 280 miles ahead of the passenger... more
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07/01/15

What was Eugene's average speed?
Eugene left the White House and traveled toward the lake. Jose left 0.7 hours later traveling 16.1 km/h faster in an effort to catch up to him. After two hours Jose finally caught up. What was... more
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06/30/15

I'm lost on how to solve this equation
21-x=83x+1
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06/30/15

word problems
the present age of a mother is equal to the square of her sons age. one year ago the mothers age was 7 times the age of her son at that time. Find their present ages
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06/30/15

The area of a pizza is 1386 centimeters. What is the radius ?
Use π=22/7
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06/29/15

if the series is given as a,b,b,c,c,c,d,d,d,d ....then which term will replicate u?
(a)200 (b)210 (c)215 (d)229 (e)232
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06/28/15

doubt for word problem expert
A and B contain milk and water in the ratio 7:3 and 3:2 respectively find the ratio in which the quantity be taken from the vessels so that the ratio of milk and water in water new mixture is 2:1... more
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06/28/15

if you flip a coin 7 times what is the probability of getting one head
I need to know how to figure out the probability of getting heads a single time after flipping a coin seven times.
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06/27/15

Not sure if my fraction is correct
1/2 of cake to share with 8 friends. What fraction of whole cake was received by each
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06/27/15

The first of three numbers is 8 less than the second number and 3 more than twice the third number. Their sum is 89. Find the numbers.
Help me please! Need answer quickly 
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