HungryForKnowlage HungryForKnowlage

12-05-2017
Mathematics

contestada

Math Help PLEASE!!

Simplify: (3r² + 7r + 1) + (4r² - 8r - 2)

A. 7r² + 15r - 1
B. 7r² - r - 1
C. 7r² - 15r - 3
D. -r² - r - 1

Respuesta :

fussellk fussellk

12-05-2017

combining like terms............
3r^2 + 7r + 1 + 4r^2 - 8r - 2
7r^2 - r - 1

Answer Link

Otras preguntas

A coin is flipped. if a heads is flipped, then the coin is flipped 4 more times and the number of heads flipped is noted; otherwise (i.e., a tails is flipped on

What does the author suggest would fill the emptiness of blank space?

In a paragraph, summarize how immunizations can prevent certain diseases. (Site 1)

I need help with 72-75, Thank you! Explain.

Can someone help :-)

I need a non negative number anyone ?

How many adjectives are in the following sentence the main island of Hawaii has raw birds active volcanoes and tropical forests 4 2 3 5

"morda", as she is known to her friends, has dyed her hair very dark, dresses all in black, and wears black nail polish and lipstick. all of the people she hang

Which statements accurately describe the Doppler effect? Check all that apply. It is used to learn about the behavior of the universe. It was used by Hubble to

tina invests in $1,200 in a account with an interest rate of 6.25%. How many years for the account to reach $11,900.