09/20/15

Use the letters of RADIUS and tell how many 6 letter combos there are with no repetitions IF the first letter is R.
Could you explain the work because I need help understanding the steps.
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09/20/15

Use distance formula to verify that the points A(0,7) ,B(3,-5) and C(-2,15) are collinear.
use the distance formula  
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09/19/15

In April 2011, gas was selling for $3.54 a gallon. The price of a gallon of regular unleaded dropped to $3.48 on May 26, 2011. What was the percent decrease?
Need help solving this problem ive been stuck on this one and about of others for I minute now please help
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09/19/15

How many of these households have at least 2 televisions?
A television manufacturing company did a survey to find out how many televisions the average American household owns. The results of 2000 households surveyed are represented below. How many of... more
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09/19/15

Derive the equation of the parabola with a focus at (-5, -5) and a directrix of y = 7.
Derive the equation of the parabola with a focus at (−5, −5) and a directrix of y = 7.   A) f(x) = −one twenty-fourth (x − 1)2 − 5B) f(x) = one twenty-fourth (x − 1)2 − 5C) f(x) = −one... more
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09/19/15

A jet flying 105 mph faster than a propeller travels 4550 miles in 3 hours less time than the propeller plane takes to fly the same distance
How fast does each plane fly?
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09/19/15

What time was it when she looked at her watch for the second time?
At a certain time, Janice notices that her digital watch reads a minutes after 2:00. Fifteen minutes later, it reads b minutes after 3:00. She is amused to note that a is six times b. (Source:... more
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09/19/15

Physics Word Problem
A rabbit and a turtle race along a 3 km straight road. The turtle runs at 1m/s and the rabbit runs at 5m/s. The rabbit gives the turtle a 5-minute head start. Who wins the race and by what distance?
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09/17/15

Distributive property of 32 x 25
Need to know distributive property of 32 x25
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09/15/15

Two planes, which are 2520 miles apart, fly toward each other. Their speeds differ by 80 mph. If they pass each other in 4 hours, what is the speed of each?
 i really need help with word problems and math in general I struggle
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09/15/15

I need help please
what is three numbers that would round to 2.80 if you were rounding to the nearest hundredth?
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09/15/15

solve the quadratic equation by using the quadratic formula
x^2+50=0                           and                             x^2-4x+13=0
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09/15/15

A bowl contains 9 red balls and 6 blue balls. In how many ways can 3 balls be selected so that both red and blue balls are obatined?
I am stuck trying to figure out how to answer questions that ask how many ways more than one item can be selected from a number of items.
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09/15/15

Math equation and Answer needed . please show work so I know what I'm doing wrong.
Briana and her sister Molly both want to buy the same model bicycle. Briana needs $73 more before she can afford the bike. Molly needs $65 more. If they combine their money, they will have just... more
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09/14/15

How many three-digit numbers can be formed using elements from the set ?{1,2,3,4,5,6}? if no element may be used more than once in a number and the number must
How many three-digit numbers can be formed using elements from the set ?{1,2,3,4,5,6}? if no element may be used more than once in a number and the number must be odd?
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09/14/15

How many license plates can be produced using five symbols on each plate where the first two symbols are letters of the alphabet and the following three symbols
How many license plates can be produced using five symbols on each plate where the first two symbols are letters of the alphabet and the following three symbols are numbers selected from the set... more
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09/14/15

.How do I start with this problem?
You and a friend take turns driving a 450 mile trip. Your friend drives for 3.5 hours at an average speed of 60 miles per hour. What must your average speed be for the remainder of the trip if you... more
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09/14/15

Decimal issues
Two decimals are less than 1, and each contains 4 digits to the right of the decimal. Each has a 9 in the tenths place and a 7 in the thousandths place. Explain how you would compare the two.
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09/14/15

Find the average rate of each train.
A freight train takes 16 hours to travel the same distance that an express train travels in 12 hours. The average rate of the train is 15 miles per hour more than that of the freight train. Find... more
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09/14/15

In how many ways can a group of 3 boys and 3 girls be seated in a row of 6 seats if boys and girls must alternate in the row?
In how many ways can a group of 3 boys and 3 girls be seated in a row of 6 seats if boys and girls must alternate in the row?
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09/14/15

Solve simultaneously the equations of m and n
m is the line:  x+4y-8=0 n is the line:  x-y-3=0  
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09/14/15

solve for X by using the Quadratic Formula
3x^2+8x-3=0                                   and                                  x^2=4x+1 
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09/14/15

How long does it take 18 chickens to eat 100 bags of scratch.
five chickens eat 10 bags of scratch in 20 days.
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09/13/15

the length of a rectangler-shaped back yard is 8 feet less than the twice width. If 260 feet of fence is needed to enclose the find the dimensions of the yard.
I don't understand anything of this question!
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09/13/15

cost of college tuition algebra 2
Marissa is going back to school to get her teaching certificate. She needs 12 additional credits to obtain certification and plans to attend one of the two local colleges. City colleges costs $70... more
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