Write an expression for "the sum of ddd and 999."Write an expression for "the sum of ddd and 999."vWrite an expression for "the sum of ddd and 999."Write an expression for "the sum of ddd and 999."Write an expressio

d+9

Step-by-step explanation:

By the sum of two numbers, we mean the addition of the two numbers.

For example, the sum of 3 and 5 is given as:

3+5=8

However when one of the term is an unknown, we simply add and the value of the unknown can only be found if we are given more information.

Therefore:

The expression for the sum of d and 9 is written as:

d+9

answer: download photomath it's legit.

step-by-step explanation:

10/60

step-by-step explanation:

if you divide 10 by 60 the answer is 0.166666 while if you divide or solve the other problems it equals 0.6