Let a and b be real numbers such that a+b=-1. Compute a^2-b^2+a-b.

Let a and b be real numbers such that a+b=-1. Compute a^2-b^2+a-b.

A school has 1693 student. the ratio of students to teacher is 20:1 in K-3 and 30.5:1 in 4-5. The school needs to have a 1st/2nd split, a 3rd/4th split and a 4th/5th split. How do...

Jaime's mean speed on her drive home from Detroit is 73mph73mph. If the total trip is 730730 miles, how long should she expect the drive to take? Round your answer to two decimal places, if necessary...

Defining the vatiables before starting tends to make the problem easier.

Please double check my work and help me understand anything I did wrong if answer incorrect. This is what I got: 1800 Use the formula for future value, A = P(1 + rt), and elementary algebra...

FULL QUESTION: As of June 2008, the U.S Senate and House of Rep. had a combined payroll of $97 million. If the payroll for the House of Rep. was $57 million more than that of the Senate, how much...

FULL QUESTION: The civilian labor force in March 2007 was 133,000 less than in March 2008. The total for 2 years was 291,959. How many civilians were in labor force in March of each year? Please...

A person invested $20 comma 000 in stocks and bonds. Her investment in bonds is $2000 more than half her investment in stocks. How much did she invest in stocks? How much did she invest in bonds?...

i want to know how to find and make an equation perpendicular or parallel

-5<-2x+3<7

Please explain not just give an answer. Full word problem below. Love is in the air and flower shops are selling a lot of roses. Flo's Flower Shop sold a total of 1400 pink roses...

A person invested 8100 for 1 year,part at 6%,part at 10%,and the remainder at 15%. The total annual income from these investments was $987. The amount of money invested at 15% was $900 more than the...

f(x) = 3x^2 + 15 x and g(x) = 1/3x find (f + g)(x) and the domain

use substitution to prove that 2s + 3s^2 is not equivalent to 5s

I have a math question in rate of change and its Y = 3x + 4 Find the rate of change in y to x in x=a to x=b So it should be Y = 3(b)+4 but I don't know how to calulate...

log base(ab) [2log base(ab)(√a)-1/2log base(ab)√ab(b)]=(log base(ab) (a))^2-(log base(ab)(b))^2 I do not know

Problem Page Chau invested his savings in two investment funds. The amount he invested in Fund A was 2000 less than the amount he invested in Fund B. Fund A returned a 6% profit and Fund...

Ali invested his savings in two investment funds. The 2000 that he invested in Fund A returned a 1% profit. The amount that he invested in Fund B returned a 6% profit. How much did he...

Manuel drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took 7 hours. When Manuel drove home, there was no traffic and the trip only took 5 hours...

Two trains leave the station at the same time, one heading west and the other east. The westbound train travels at 75 miles per hour. The eastbound train travels at 95 miles per hour. How long will...