Product of 8 and seven less than a number

Change the word to an algebraic expression  Use x to represent the number  

WORD PROBLEM ON WORK

5 Sam and Joey are hired for a project. After they work together for 2 hours, Sam leaves and Joey ?nishes the project in 3 more hours. Had Joey left instead of Sam, it would have taken Sam 4 more... more

09/10/15

How many trips will Jaime need to make

Jaime wants to get a fox, a goose and a bag of grain safely across the river in a boat. He can only take on at a time in the boat.  if left alone together, the goose would eat the grain and the fox... more

09/10/15

How many license plates...

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

Answering in a 'Let' statement, and setting out an algebraic equation and solving. Thank you :)

Four brothers, Ben, Dave, Mick and Joe, invested in a set of flats that cost $445,000. Dave invested $40,000 more than Ben, Mick invested three times as much as Ben and Joe invested half as much as... more

Question about interest rates

A mother wants to invest $13,000.00 for her son’s future education. She invests a portion of the money in a bank certificate of deposit (CD account) which earns 4% and the remainder in a savings... more

The book value of a machine is expressed by the equation V= 50,000 - 5000t

The book value of a machine is expressed by the equation V= 50,000 - 5000tWhere “V” equals the book value in dollars and “t” equals the age of the machine expressed in years. (a) Identify the t... more

08/25/15

Problem solving for today please!!

an ant was climbing up a 24 - foot tall tree. The first hour it climbed 1/16 of the way up , the second hour it climbed 1/4 of the rest of the way up. The third hour it climbed 1/5 of the remainder... more

07/28/15

If K is a positive integer, which of the following must represent an even integer hat is twice the value of an odd integer?

Please help. I got confused with this question. Thank you!

what are the excluded values for 2x-8 over x^2-6x+8 ?

When finding the domain of a rational expression the excluded values are any values of the variable that makes the expression undefined.what are the excluded values for 2x-8 over x2-6x+8 What would... more

05/20/15

Find linear equation in slope-intercept form

Can someone help me write this linear equation in slope-intercept form? My previous attempts have been sent back as incorrect and I am at a total loss. Current Population of US is... more

05/19/15

If c is a negative number in the equation x^n = c, how does that affect your ability to solve the equation for different values of n? Explain.

If c is a negative number in the equation xn = c, how does that affect your ability to solve the equation for different values of n? Explain.

What's the formula for the nth term of a arithmetic sequence if a4=-10 and a10=-25

I need to know how to do it

05/13/15

Help solve this. (Sorry)

A bag contains 5 red marbles, 11 blue marbles, and 6 yellow marbles. You randomly draw a marble from the bag. Then, you randomly draw another marble without replacing the first marble. Find the... more

05/12/15

how do you complete the square and factor x^2-8x+?

Complete the square

Word problem help? 4

A ladder is leaning against a building so that the distance from the ground to the top of the ladder is 3 feet less than the length of the ladder. Find the length of the ladder if the distance from... more

05/01/15

log(z)-log(x)-log(y)

I dont no how to solve this even my teacher dont no its confusing we have 2 differant answers for it if any one can help please help me i need it

if tan0=5/8 and 0 is in the third quadrant, what are the five other remaining trig functions of 0

i need help with this, someone help me

04/30/15

The local art supply store sold 20 boxes of crayons last year. This year they sold 80 boxes. This year's sales are what percent of last year's sales?

The local art supply store sold 20 boxes of crayons last year. This year they sold 80 boxes. This year's sales are what percent of last year's sales? Draw a diagram to help solve the problem.

04/30/15

How fast is the river?

A paddleboad can move at a speed of 2 km/h in still water. the boad is paddled 10 km downstream in a river in the same time it takes to go 5 km upstream. What is the speed of the river?

04/28/15

Word problem involving Bob and James finishing the roof of a house

Bob and James are finishing the roof of a house. Working alone, Bob can shingle the roof in 14 hours. James can shingle the same roof in 18 hours. How long will it take them working together to... more

given that log11=1.0414 and log5=.6990, evaluate

1.) log55   2.) log125/121

04/28/15

Find the length of the rectangle

A rectangle is drawn so that the width is 4 feet shorter than the length. The area of the rectangle is 21 square feet. Find the length of the rectangle.

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