A box is a cuboid with dimesions 26cm by 15cm by 20cm all measured to the nearest centimetre. disc cases are cuboids which measure 1.6cm by 14.2cm by 19.3cm all measured to the nearest millimetre.

If the disc cases are stacked as shown, show that it may NOT be possible for 16 cases to fit in the box.

Arandom sample of 240 park users were asked if they go to the park more often on weekdays or on the weekend. the results are shown in the table. weekdays weekend male 50 10 female 150 30 based on the data in the table, select correct or incorrect for each statement. correct incorrect the males go to the park more often on the weekend. the females go to the park more often on weekdays. for the participants in the survey, gender affects which days of the week a person goes to the park.

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

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