Register
Which expression represents the sum of 21 and an unknown number? A. 21-d B. 21+d C. 21÷d D.21d
86.1k views
2 votes
Which expression represents the sum of 21 and an unknown number?

A. 21-d


B. 21+d


C. 21÷d


D.21d

User Desmond Smith
by
7.7k points

2 Answers

5 votes
the answer is B because it says sum. sum means addition.


User Todd Curry
by
8.4k points
0 votes
B. The variable d represents an unknown number. So, 21+d, is equal to 21+an unknown number.
User Jukka Puranen
by
8.4k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.5m questions

12.2m answers

Other Questions

i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Write words to match the expression. 24- ( 6+3)
A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.
9/10 divided by (1/10 plus 2/5)
Please solve the following equation. x-6x=56
Link Copied!