08-05-2014
Mathematics

Answered

If P = a^2 + a - 1 and R = –a - 1, which expression represents P + R
a) a^2 + 2
b) a^2 - 2
c) a^2 + 2a
d) a^2 + 2a - 2

Answer :

Аноним Аноним

08-05-2014

[tex]P=a^2+a-1;\ R=-a-1\\\\P+R=(a^2+a-1)+(-a-1)=a^2+a-1-a-1=a^2-2\\\\Answer:b)[/tex]

Answer Link

Other Questions

Fifty-eight more than the second of three consecutive even integers is the same as the diffrence between the third and ten times the first. Find the numbers

How to find the kinetic energy increment when only the force and displacement is given?

Select the correct answer.A theme is most commonly revealed through a text's treatment of what essential story element?A. mood B. figurative devices C. confli

8).- Calcula "m", si m + n = 24mna) 6b) 12c) 8d) 7e) 10

Define "organization" and explain three characteristics of an organization. Give three examples of organizations, including one that you belong to.---Save and E

Which algebraic expression is a polynomial?A. [tex]$4 x^2 - 3 x + \frac{2}{x}$[/tex]B. [tex]$-6 x^3 + x^2 - \sqrt{5}$[/tex]C. [tex]$8 x^2 + \sqrt{x}$[/tex]D. [t

Select the correct answer.The volume of a rectangular prism is a minimum of 25 cubic feet. The height of the prism is 3 feet more than its width, and its length

Which characteristics of satire are evident in "A Modest Proposal"? Select three answer options.A. Criticism of societyB. Overall ironyC. Multiple points of vie

The height of a triangle is 4 inches greater than twice its base. The area of the triangle is no more than 168 in.[tex]${}^2$[/tex]. Which inequality can be use

The journey time from Waterloo to Dartford is always the same.Work out the time that goes in the gap.\begin{tabular}{|l|l|l|l|}\hline Train station & \multi

a jogger ran at a rate of 5.4 miles per hour. find the joggers exact rate ,in feet per minute

three friends each have some ribbon.Carol has 42 in of ribbon,tino has 2.5 feet of ribbon, and baxter has 1.5 yards of ribbon. Express the total length of ribbo

What is 2/5 written as a decimal? A. 0.25 B. 0.4 C. 2.5 D. 5.2

Since it's founding, a volunteer group has restored 50 houses. It plans to restore 15 houses per year in the future. Write an equation that models the total num

Jack got the expression 7x + 1 and then wrote his answer as 1 + 7x. Is his answer an equivalent expression? How do u know? Explain using extended vocabulary

a molecular model uses the scale 2.5 cm:0.00001 mm. if the model is 7 cm long, how long is the actual molecule

Look down below for question

A gene is a subunit of information on a chromosome true or false?

If a single fair die is rolled, find the probability of the following result. An odd number, given that the number rolled was 3.

What is a substance formed by the chemical joining of two or more elements in definite amounts? A. isotope B. Compound C. Enzyme D. Nucleus