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c) 7 x + 8 = 71

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Answers

2 parts
c

Δ=9\Delta = 9

d

Δ=7\Delta = 7

R4500\text{R}4500

Step-by-step solution

2 steps

Here's the solution for the problems.

Part c

7×Δ+8=717 \times \Delta + 8 = 71

This problem was solved in the previous turn, where Δ=9\boxed{\Delta = 9}.

Part d

Δ=7\Delta = 7

14×Δ−21=7714 \times \Delta - 21 = 77

This problem was also solved in the previous turn (as part b)), where Δ=7\boxed{\Delta = 7}.

Support activity
Write a number sentence for the problems.
Problem: A farm worker get paid R150 + 5 days every week. How much in 6 weeks?

Interpretation: The worker is paid R150 per day and works 5 days a week.

  1. Determine the correct number sentence.

    The worker earns R150 per day for 5 days a week, so weekly earnings are R150×5R150 \times 5.
    To find the total earnings over 6 weeks, multiply the weekly earnings by 6.
    Correct number sentence: (150×5)×6=Total Pay(150 \times 5) \times 6 = \text{Total Pay}

  2. Calculate the total pay.

    First, calculate weekly earnings:

    150×5=750150 \times 5 = 750

    Next, calculate total earnings over 6 weeks:

    750×6=4500750 \times 6 = 4500

    The total amount the farm worker gets paid in 6 weeks is R4500\boxed{\text{R}4500}.
    Your final answer of R4500 is correct.

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