Ask Question
MathematicsMathematics
Today, 03:19

Ella simplifies (3b+4r) + (-2b-r) and says the result is b+5r. What error did Ella make?

A. Ella incorrectly combined the b coefficients. The correctly simplified expression is 5b+5r.

B. Ella incorrectly combined the b coefficients. The correctly simplified expression is - b+5r.

C. Ella incorrectly combined the r coefficients. The correctly simplified expression is b-5r.

D. Ella incorrectly combined the r coefficients. The correctly simplified expression is b+3r.

+4
Answers (2)
  1. Today, 06:20
    0
    D is the answer.

    3b + (-2b) = 1b (same as 3-2=1)

    4r + (-r) = 3r (same as 4-1=3)

    When you add a negative, you subtract.
  2. Today, 07:14
    0
    The correct answer is (D).

    (3b + 4r) + (-2b - r) = (3b - 2b) + (4r - r) = b + 3r

    not

    b + 5r

    * Ella added (4r + r) instead subtracting (4r - r), thus she got the wrong answer.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Ella simplifies (3b+4r) + (-2b-r) and says the result is b+5r. What error did Ella make? A. Ella incorrectly combined the b coefficients. ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers
You Might be Interested in
can you solve this 7 1⁄5 - 6 2⁄5 = ? A. 4⁄5 B. 13 3⁄5 C. 1 4⁄5 D. 1 1⁄5
Answers (1)
A tank is full of water. find the work required to pump the water out of the spout. use the fact that water weighs 62.5 lb/ft3. (assume a
Answers (1)
How do you solve 5 (7-4) 2 divided by 3+11 The two is supper to be little above the 4
Answers (1)
Which expression represents the product of unknown number and 19?
Answers (2)
Which statement is true about the graphs of the two lines y = - 6 and x = 1/6?
Answers (2)
New Questions in Mathematics
Write an Inequality for the following situation No more than 8 books are in your bag
Answers (1)
Samantha's parents give her $10 per week. For each chore that she does not complete, she must repay her parents $1. Which graph models Samantha's allowance?
Answers (1)
Approximately 18% of the calls to an airline reservation phone line result in a reservation being made. (a) suppose that an operator handles 15 calls. what is the probability that none of the 15 calls result in a reservation?
Answers (1)
Which type of study best describes the following research most likely to be done? A teacher wants to know how fast all her students for a particular period can complete a multiplication quiz to check their mental math abilities.
Answers (2)
Assume a and b are both integers and a > 0. Define a remainder after the division of b by a to be a value r such that r ⥠0, r < a, and there exists an integer q for which b = aq + r. a) Prove uniqueness.
Answers (1)
Home » Mathematics » Ella simplifies (3b+4r) + (-2b-r) and says the result is b+5r. What error did Ella make? A. Ella incorrectly combined the b coefficients. The correctly simplified expression is 5b+5r. B. Ella incorrectly combined the b coefficients.
Sign Up Forgot Password?