Question

Select all the expressions that are equivalent to 0.3(9n + 22).

–2.7n – 6.6
2.7n + 6.6
2.7 + 6.6n
6.6 + 2.7n
6.6 – 2.7n

Answer 1

Answer is

✅ -2.7n – 6.6

✅ 2.7n + 6.6

✅ 6.6 + 2.7n

Step by step

Solve 0.3(9n + 22)
Distribute multiply

2.7n + 6.6

Same as ✅

✅ -2.7n – 6.6

✅ 2.7n + 6.6

2.7 + 6.6n❌

✅ 6.6 + 2.7n

6.6 – 2.7n❌

Answer 2

2.7n + 6.6 or 6.6 + 2.7n

Explanation:

Algebraic Expressions

Algebraic Expressions are just like Numerical Expressions but instead of numbers, alphabets are used, these alphabets can also be used as variables. (BODMAS rule applies to Algebraic Expressions as well.)

Eg. 45x + 31x(2) = 45x + 62x = 107x

Solution

Given from the question:

`0.3(9n + 22) \\ = 2.7n + 6.6 \: or \: 6.6 + 2.7n`