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KS3

This rectangle is twice as long as it is wide. The perimeter of the rectangle is 30cm. What is the area?

50cm2

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Answered by Sammy B. Maths tutor
2752 Views

Write the missing numbers on the lines.

76 + 84 = 16036+54 = 90

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Answered by Sammy B. Maths tutor
2079 Views

What happens to blood cells in a dilute solution?

They will swell and burst as water will enter the cell through osmosis. Water is more concentrated outside of the cell than in so the cell bursts.

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Answered by Sarah O. Biology tutor
3819 Views

Is sodium deposited during the electrolysis of brine?

No, sodium is left in solution and forms Sodium Hydroxide due to Sodium reacting with OH- ions. This happens because sodium is much more reactive than hydrogen.

SO
Answered by Sarah O. Chemistry tutor
1825 Views

What is the Pythagoras’ theorem and how can it be used to work out the distance between two points?

Pythagoras’ theorem is the formula used to calculate any side of a right-angled triangle. The concept is that the square of the hypotenuse is equal to the sum of the squares on the other two sides. Assign...

SW
Answered by Samuel W. Maths tutor
2494 Views

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