Answered

At Westonci.ca, we make it easy for you to get the answers you need from a community of knowledgeable individuals. Get immediate and reliable solutions to your questions from a community of experienced experts on our Q&A platform. Get immediate and reliable solutions to your questions from a community of experienced professionals on our platform.

1. Find the value of the expression [tex]21 - 2a[/tex] if [tex]a = 3[/tex].

A. 57
B. 15
C. 27
D. 16

Sagot :

GinnyAnswer
To find the value of the expression [tex]\(21 - 2a\)[/tex] when [tex]\(a = 3\)[/tex], follow these steps:

1. Substitute [tex]\(a = 3\)[/tex] into the expression:
[tex]\[ 21 - 2a \rightarrow 21 - 2(3) \][/tex]

2. Multiply [tex]\(2\)[/tex] by [tex]\(3\)[/tex]:
[tex]\[ 2 \times 3 = 6 \][/tex]

3. Subtract [tex]\(6\)[/tex] from [tex]\(21\)[/tex]:
[tex]\[ 21 - 6 = 15 \][/tex]

Therefore, the value of the expression [tex]\(21 - 2a\)[/tex] when [tex]\(a = 3\)[/tex] is [tex]\(15\)[/tex].

So, the correct answer is:
B. 15
Thanks for stopping by. We strive to provide the best answers for all your questions. See you again soon. Thank you for your visit. We're committed to providing you with the best information available. Return anytime for more. Westonci.ca is your go-to source for reliable answers. Return soon for more expert insights.