Questions on Algebra: Expressions involving variables, substitution answered by real tutors!

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Algebra: Expressions involving variables, substitution

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Question 97103: x-2y=-3 solve for x
Click here to see answer by checkley71(8405)

Question 97103: x-2y=-3 solve for x
Click here to see answer by stanbon(26259)

Question 97006: -2m=-48
So Im guessing your solving for the variable m?
Step by step
-2m=-48
Divide -2 by -2 and divide -48 by -2
That leaves you with:
m=24
Check:
-2(24)=-48
-48=-48
Click here to see answer by guitarguy23(2)

Question 97116: If David has 19 bills in his wallet worth $125, all fives and tens, how many of each bill does he have?
Click here to see answer by checkley71(8405)

Question 97148: Prince and Madonna were the top two moneymakers in the 2004 usic industry. Prince earned $1.6 million more than Madonna, and together they earned$111.4 million. What were the earnings of each of these performers in 2004?
Click here to see answer by stanbon(26259)

Question 97153: The cashier's office at the college has collected $7020 from part-time students for a total of 42 courses. If each credit hour costs $45, how many 3-hour courses and how many 5-hour courses were paid for?
Click here to see answer by checkley71(8405)

Question 97092: Write a verbal expression for each algebraic expression:
4(n2+1).
Click here to see answer by coyote(32)

Question 97200: 5x-8x+7=22;-5
Click here to see answer by jim_thompson5910(13787)

Question 97199: 4(x-3)=-24;-3
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Question 97198: 7-2x=15
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Question 97230This question is from textbook Algebra
: How do you do this?
Use the expression r+0.12m to calculate the cost of renting a car. The basic rate is r. The miles driven is m.Determine the cost for the following.
The basic rate is $15.95.The car driven is 150 miles.This question is from textbook Algebra

Click here to see answer by stanbon(26259)

Question 97304This question is from textbook Algebra 1

: I dont know how to do this; Write an algebraic expression for: two thirds of the square of a number.This question is from textbook Algebra 1

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Question 97339: the amount of garbage produced by our society requires that every work to recycle .each person in the united state produces an average or 3.5 pounds of trash a day.

1.write an expression representing the pounds of trash produced in a day by a family that has x members.
2.write an expression representing the pounds of trash produced in a day by a family that has y members.
3. write an expression representing the pounds of trash produced in a day by both of the families in parts 1 and 2
Click here to see answer by mathslover(126)

Question 97361This question is from textbook Algebra 1
: 2/5m=3
4/5=m=6
what was done to the first equation to get the second one?
2x=10
2x+4=14
what was done to the first equation to get the second one?This question is from textbook Algebra 1

Click here to see answer by jim_thompson5910(13787)

Question 97353This question is from textbook Algebra 1
: Six more than a number.This question is from textbook Algebra 1

Click here to see answer by roseyposey(9)

Question 97351This question is from textbook Algebra 1
: Twice a number.This question is from textbook Algebra 1

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Question 97349This question is from textbook Algebra 1
: Half of a numberThis question is from textbook Algebra 1

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Question 97348This question is from textbook Algebra 1
: 11 fewer than xThis question is from textbook Algebra 1

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Question 97499: If The Question says "eight more than the product of a number and 100" would The answer be 100x-8 ?

Click here to see answer by checkley71(8405)

Question 97578This question is from textbook algebra 1
: a CD costs $3.50 more than a tape. Write an expression for the total cost of 1 CD and 1 tape.This question is from textbook algebra 1

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Question 97592: write an algebraic expression for 6 more than twice m

Click here to see answer by elima(1433)

Question 97592: write an algebraic expression for 6 more than twice m

Click here to see answer by edjones(3292)

Question 97606: How do you solve 3(2x+5)=39?
Click here to see answer by mathslover(126)

Question 97607: I need help solving a/2 + 1/5=17
Click here to see answer by scott8148(3382)

Question 97663: One number is six times another number. Their sum is -147. Find the number.
Click here to see answer by gigi(2)

Question 97777: 3x+y=7
-4x-y=7
If they say solver for x and y, What are the steps inorder to solve for x and y?
Click here to see answer by Msgenes(10)

Question 97779: How do you solve 2 to the exponent x=1/8?
Click here to see answer by mathslover(126)

Question 97801: How do you solve 6x to the second power-7x=3?
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Question 97801: How do you solve 6x to the second power-7x=3?
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Question 97800: How do you solve x to the second power-5x-6=0?
Click here to see answer by bucky(1732)

Question 97802: How do you solve 4x-y=19? Do you replace in the x and then a y with any #?
Click here to see answer by checkley71(8405)

Question 97802: How do you solve 4x-y=19? Do you replace in the x and then a y with any #?
Click here to see answer by elima(1433)

Question 97847: A customer at a hardware store brought nails that cost a penny each, hooks that cost a dime each, and electrical tape that cost a half-dollar a roll. If the customer spent exactly $5.00 (before tax was added) and purchased 100 items, how many of each item did she buy?
Click here to see answer by Nate(3495)

Question 97861: How do you write 7 less than 3 times a number n as an expression?
Click here to see answer by checkley71(8405)

Question 98033This question is from textbook health algebra 1 an integrated approach
: please help me solve this equation 2[3(4divide2)+ 6]-5This question is from textbook health algebra 1 an integrated approach

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Question 98299: translate into an algebraic expression or equation:
the product of 7 and 3 is 2 less than a number
the quotient of 25 and 50
Click here to see answer by checkley71(8405)

Question 98301: (B) represents your brother's age. Write an algebraic expression to describe your age which is half your brother's age.
Click here to see answer by yhanie(3)

Question 98395This question is from textbook
: 1=1
1+3=?
1+3+5=?
1+3+5+7=?
1+3+5+7+9=?
Pythagoras is credited with a discovery about the sum of consecutive odd numbers such as those shown above. What did he discover?
What is the sum of the first 100 odd numbers?

What is the sum of the first x odd numbers?This question is from textbook

Click here to see answer by stanbon(26259)

Question 98387This question is from textbook
: write an algebraic expression for the amount of mileage on Seth's car if the car initially has 20,000 miles and Seth adds an average of x miles per month for 2 yearsThis question is from textbook

Click here to see answer by tutorcecilia(2042)

Question 98388: what is the square of r increased by 3s when r=2 and s=5
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Question 98298: write an algebraic equation to describe the interest (I) earned on an investment of $2,000 at an annual rate of 5% for (Y) years.
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Question 98382This question is from textbook glencoe algebra 1
: what is a verbal expression for 2(4)(5)^2This question is from textbook glencoe algebra 1

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Question 98380: two thirds of the square of a number
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Question 98409: 5x + 8 + 3x - x + 5 = 6x - 3
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