09/25/18

Quadratic Equation word problem

Using one engine of a ferry boat, it takes 6 hr. longer to cross a channel than it does using a second engine alone. With both engines operating, the ferry boat can make the crossing in 4 hr. How... more

Huey has twice as many toys as Dewey and thrice as many toys as Louie, Huey has 12 more toys than Loue. How many fewer toys does Dewey have than Huey?

I'm stuck and don't know how to answer this problem. Huey has twice as many toys as Dewey and thrice as many toys as Louie, Huey has 12 more toys than Loue. How many fewer toys does Dewey have than... more

09/25/18

A 1818​-foot piece of siding is cut into three pieces so that the second piece is three timesthree times as long as the first piece and the third piece is five

A 18 -foot piece of siding is cut into three pieces so that the second piece is three times as long as the first piece and the third piece is five times as long as the first piece. If x represents... more

the area of a triangle is 30 ft^2.

the area of a triangle is 30 ft^2.  find the base and altitude if the latter exceeds the former by 7ft^2

In a football match,the number of men is 250 more than the number of women. The number of children is twice the number of women and the number of men is twice..

In a football match,the number of men is 250 more than the number of women. The number of children is twice the number of women and the number of men is twice the number of women and men combined.... more

determine the maximum number of DVD movies that can be purchased for ​$435. Indicate how many boxes of 20 and how many boxes of 12 will be purchased.

One supplier is selling boxes of 20 DVD movies for $230, and a second supplier is selling boxes of 12 DVD movies for $170. Only complete boxes of DVD movies can be purchased. Determine the maximum... more

09/24/18

describe and correct the error in evaluating the expression when x=3 and y= -8

x- (-4 + y) = 3 - [-4 + (-8)]                  = 3- (-12)                  = 3 - 12                  = -9

09/24/18

Word problem Linear

LaTanya will walk her bike from her house to the bike shop, which is 1.5 mi from her house, to get the bike fixed. She expects to wait 30 minutes for the repair. The she will ride her bike home.... more

question is in the description because it was too long

The Little Town Arts Center charges $25 for adults, $14 for seniors, and $7 for children for their Sunday afternoon performances. This past Sunday, the paid revenue was $11680 for 790 tickets sold.... more

A rectangle has a length at least one less than three times the width...

If the perimeter is greater than or equal to 46 inches, find the smallest possible width and length.

09/24/18

Julie has 1 3/4 yds of ribbon. She needs to make bows. Each bow will need to be 1/3 yard. How many bows can she make

Julie has 1 3/4 yds of ribbon. She needs to make bows. Each bow will need 1/3 yd. how many bows can she make?

Find the speed of the wind if the speed of the plain in still air is 180 mph.

Joel traveled againt the wind in a small plane for 3hr. The return trip with the wind took 2.8 hr.

09/24/18

Using mathematical induction prove that the expression n^4-n^3+n^2-n is divisible by 2 for all positive integres.

 Please help me to solve the problem.

09/23/18

A student works no more than 25 hours each week at a part-time job. Write an inequality that represents how many hours the student can work each day

A student works no more than 25 hours each week at a part-time job. Write an inequality that represents how many hours the student can work each day

speed question

two cars start from 270 mi apart and travel toward each other. they meet after 3 hr. find the speed of each car if one travels 20 mph faster than the other.

two less than the prodduct of 21

tur this phrase into a algebraic expression 

A rectangular lawn measuring 8 m by 4 m is surrounded by a flowerbed of uniform width. The combined area of the lawn and the flowerbed is 165 m2. What is the wi

A rectangular lawn measuring 8 m by 4 m is surrounded by a flowerbed of uniform width. The combined area of the lawn and the flowerbed is 165 m2. What is the width of the flowerbed? Be sure to (a)... more

09/19/18

Please help. What must be true about the denominator of a fraction in order for the fraction to correspond to a terminating decimal? Explain.

What must be true about the denominator of a fraction in order for the fraction to correspond to a terminating decimal? Explain.

find the range of possible side lengths that satisfy these conditions

Use decimal form for numerical values the perimeter of a square must be greater than 162 inches but less than 190 inches. find the range of possible side lengths that satisfy these conditions... more

09/19/18

equations with fractions

A quality control inspector found 3 defective transistors in a shipment of 500 transistors. At this rate, how many transistors would be defective in a shipment of 2000 transistors?

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