Question
Work out the value of \( b \) when \( b=7 a^{2} \) and \( a=3 \)
Ask by Brooks Tran. in the United Kingdom
Feb 24,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
\( b=63 \)
Solution
Substitute \( a=3 \) into the expression \( b=7a^{2} \).
Evaluate the expression by following steps:
- step0: Evaluate:
\(b=7a^{2}\)
- step1: Substitute:
\(b=7\times 3^{2}\)
- step2: Multiply the terms:
\(b=63\)
The value of \( b \) when \( a=3 \) is \( b=63 \).
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Simplify this solution Beyond the Answer
To find the value of \( b \), we simply substitute the value of \( a \) into the equation \( b = 7a^2 \). When \( a = 3 \): \[ b = 7(3^2) = 7(9) = 63 \] So, \( b = 63 \).
