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How does freeze-thaw weathering occur?

Freeze-thaw weather occurs when water enters a small crack in a rock, which often happens during rainfall, then when temperatures fall to below 0 degrees celsius this water freezes and expands. This widens t...
EG
Answered by Emily G. • Geography tutor
5299 Views

Solve the simultaneous equations: y = x + 6, x^2 + 2y = 9

y = x + 3x 2 + 2y = 9We want to make the squared equation have either only x's or only y's, so we substitute y = x + 3 into the equation:x 2 + 2(x + 3) = 9We need to take out the brackets, and simplify this ...
HH
Answered by Hayley H. • Maths tutor
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State three ways in which a yeast cell differs from plant cells.

Yeast cells contain stored glycogen, whereas plant cells contain stored starch. Plant cells reproduce through mitosis whereas yeast cells reproduce through binary fission Plant cells contain chloroplasts, ye...
CB
Answered by Coralie B. • Biology tutor
10289 Views

Please conjugate the verbs faire and aller into the passé composé

The passé composé can be translated with the present perfect or the simple past in English. We use it to indicate that an action in the past has been completed. We use this form in particular to emphasise th...
LK
Answered by Lucie K. • French tutor
3185 Views

Solve 3x - 5 < 16

When solving inequalities, you should treat them like solving any regular equation that you are used to (ie. whatever operation you perform on the left hand side, you must perform on the right hand side also...
MR
Answered by Mylan R. • Maths tutor
5032 Views