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What is the value of the expression below when z=2 ? 10 z+9 Answer:

What is the value of the expression below when z=2 z=2 ?\newline10z+9 10 z+9 \newlineAnswer:

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Full solution

Q. What is the value of the expression below when z=2 z=2 ?\newline10z+9 10 z+9 \newlineAnswer:
  1. Substitute Value of zz: Substitute the value of zz into the expression.\newlineWe are given z=2z = 2, so we substitute 22 for zz in the expression 10z+910z + 9.\newlineCalculation: 10×2+910 \times 2 + 9
  2. Multiply 1010 by 22: Multiply 1010 by 22. We perform the multiplication part of the expression first, according to the order of operations (PEMDAS/BODMAS). Calculation: 10×2=2010 \times 2 = 20
  3. Add 99 to Result: Add 99 to the result from Step 22.\newlineNow we add 99 to the result of the multiplication.\newlineCalculation: 20+9=2920 + 9 = 29

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